Introduction
Timber-framed buildings hold a significant place in architectural history, showcasing craftsmanship and enduring beauty. However, improper preservation practices and the use of modern materials have led to various issues that compromise the integrity of these structures. This article aims to shed light on common timber frame problems and highlight the importance of conservation and restoration techniques in preserving timber framed buildings.
The Pitfall of Tar and Modern Paints
Traditionally, tar or pitch were applied to oak frames as a means of sealing and preserving the wood. Unfortunately, this practice can have detrimental effects. The use of tar or modern paints, especially the popular trend of painting oak frames black, traps moisture within the wood, leading to rot. To ensure the long-term health of the timber, conservation and restoration efforts involve the removal of paints, allowing the wood to breathe and dry out effectively.
Cement and Putty: Enemies of the Timber Frame
Over time, joints and cracks in Timber frames may deteriorate, prompting the use of cement or putty as fillers. However, this approach inadvertently traps water against the timber, accelerating the rotting process. It is crucial to recognise that such materials should be avoided in the restoration process to prevent further damage. Instead, appropriate techniques that promote ventilation and moisture control must be employed.
Beware of Modern Sealants
Modern sealants like silicone, acrylic caulk, mastic, foam, and putty, often used around infill panels, can have catastrophic consequences for timber frames. These materials create a seal that allows water to accumulate against the timber, leading to rapid rot. Restoration experts prioritise the use of alternative materials that facilitate breathability and prevent moisture entrapment.
Brick Infill Panels and Cement Renders
As original wattle and daub or lath and lime plaster panels deteriorate, they are sometimes replaced with brick infill panels using cement mortar. Unfortunately, this substitution introduces additional weight to the frame, causing distortion and potential collapse. Additionally, brick and cement retain moisture, leading to rot in the timber frame. Restoration efforts involve careful removal of these panels and the application of lime mortar and render, ensuring the preservation of the timber frame’s integrity.
The Perils of Modern Paints on Infill Panels
Infill panels, such as daub panels, are often painted with modern acrylic or gloss white paints, which trap moisture and contribute to the rotting of the surrounding timber, staves, and withies. Restoration specialists advocate for the removal of such paints to allow the panel to breathe and prevent moisture accumulation, thereby safeguarding the long-term health of the timber.
Galvanised Mesh and Lime Renders
A common mistake in restoration projects is the application of galvanised mesh beneath lime renders, often mixed with cement, which eventually leads to cracking and render detachment. Lime reacts with the galvanising in the mesh, undermining the integrity of the finish. Restoration work necessitates the removal of these materials and their replacement with traditional alternatives, such as lime render.
Conclusion
The conservation and restoration of timber framed buildings require a meticulous approach to tackle various timber frame problems. By avoiding the use of moisture-trapping materials, adopting proper ventilation techniques, and reverting to traditional practices, we can ensure the preservation of these architectural treasures for generations to come. By embracing the art of conservation, we safeguard the structural integrity and historical significance of timber framed buildings.
Condensation in buildings is a common problem that occurs when warm, moist air comes into contact with cooler surfaces, causing the water vapour in the air to condense into liquid water droplets. This can lead to various issues such as mould growth, deterioration of building materials, and reduced indoor air quality. To address condensation in buildings, a scientific approach involves understanding the underlying causes and implementing effective strategies to prevent or minimize its occurrence. Here’s a step-by-step scientific approach to tackling condensation:
Identify sources of moisture: Determine the potential sources of moisture within the building. These may include activities such as cooking, bathing, and drying clothes, as well as any water leaks or infiltration from outside.
Assess building envelope: Evaluate the building envelope, including walls, roofs, windows, and doors, to identify areas where moisture may enter or accumulate. Look for signs of water stains, leaks, or inadequate insulation that may contribute to condensation.
Measure humidity levels: Measure and monitor the indoor relative humidity levels using a hygrometer. Ideal humidity levels typically range between 30% and 50%. High humidity increases the likelihood of condensation.
Ventilation assessment: Evaluate the effectiveness of the building’s ventilation system. Insufficient ventilation can trap moisture indoors, leading to higher humidity levels and increased condensation. Consider both natural and mechanical ventilation options.
Insulation evaluation: Assess the insulation levels in the building. Inadequate insulation can result in temperature differentials between indoor and outdoor surfaces, leading to condensation on cold surfaces. Improve insulation to minimise temperature variations.
Thermal bridging analysis: Identify areas of thermal bridging where heat is transferred more easily, leading to colder surface temperatures and potential condensation. Use thermal imaging or consult with professionals to locate and address these areas.
Air sealing: Ensure the building is properly sealed to minimise air leakage. Uncontrolled air movement can introduce warm, moist air into cooler areas, increasing the likelihood of condensation. Seal gaps, cracks, and penetrations in the building envelope.
Moisture control measures: Implement moisture control strategies such as using vapour barriers or moisture-resistant materials in areas prone to high humidity. Consider installing exhaust fans in kitchens and bathrooms to remove moisture at the source.
Consider dehumidification: In areas with consistently high humidity, consider using dehumidifiers to maintain optimal indoor humidity levels. This can be particularly useful in basements or areas with limited ventilation.
Regular maintenance and monitoring: Conduct regular inspections and maintenance to identify and address any issues that may contribute to condensation. Monitor indoor humidity levels, insulation, and ventilation performance to ensure continued effectiveness.
It’s important to note that every building is unique, and the approach to addressing condensation may vary depending on the specific circumstances. Consulting with qualified surveyors provide tailored recommendations for your specific building and help ensure an effective solution to condensation issues.
Condensation in buildings refers to the process by which water vapour in the air transforms into liquid water on cool surfaces within a building. It typically occurs when warm, moisture-laden air comes into contact with colder surfaces, causing the water vapour to condense and form droplets. This phenomenon often becomes noticeable on windows, walls, mirrors, and other surfaces that have a lower temperature than the surrounding air.
Condensation is a natural occurrence and can happen in any building, regardless of its age or construction type. It tends to be more prevalent during colder months when temperature differences between indoor and outdoor environments are more significant. However, it can also occur during warm and humid weather conditions when there is excessive moisture in the air.
Several factors contribute to condensation in buildings:
Temperature differentials: When warm, humid air contacts a cooler surface, such as a window or wall, the air cools down, and its moisture condenses into liquid droplets.
Poor ventilation: Inadequate ventilation can trap moisture inside a building, leading to increased humidity levels. Without proper airflow, moisture cannot escape, increasing the likelihood of condensation.
High humidity: When the air contains a significant amount of moisture, it becomes more prone to condensation. Activities like cooking, bathing, and drying clothes indoors contribute to higher humidity levels.
Insulation and air leaks: Insufficient insulation or air leaks can create cold spots on walls or windows, increasing the likelihood of condensation. Cold surfaces are more prone to condensation than warm surfaces.
The presence of condensation in a building can have various implications:
Mould and mildew growth: Accumulated moisture from condensation can create an environment conducive to mould and mildew growth, leading to potential health issues and damage to building materials.
Damage to building materials: Prolonged exposure to condensation can cause wood rot, paint damage, and deterioration of other materials. This can weaken the structural integrity of the building and require costly repairs.
Reduced energy efficiency: Condensation can indicate inadequate insulation or air leaks, leading to energy loss and increased heating or cooling costs.
To address condensation issues, the following measures can be taken:
Improve ventilation: Ensure proper airflow throughout the building, especially in high-moisture areas like kitchens and bathrooms. Use exhaust fans or open windows to allow moist air to escape.
Maintain balanced humidity levels: Use dehumidifiers in areas prone to high humidity, and monitor and control indoor humidity levels to prevent excessive moisture accumulation.
Insulate cold surfaces: Improve insulation in walls, roofs, and windows to minimize temperature differentials and reduce the likelihood of condensation.
Eliminate air leaks: Seal gaps, cracks, and openings that allow cold air to infiltrate the building, which can create cold spots prone to condensation.
By addressing these factors, it is possible to mitigate condensation issues in buildings and maintain a healthier and more comfortable indoor environment. Consulting ourselves will get you one step closer to a healthier damp free house.
Introduction
Maintaining a property’s structural integrity is a top priority for any responsible homeowner or investor. Undetected issues such as dampness, woodworm infestation, and rot can lead to extensive damage, compromising the safety and value of the building. To ensure early detection and effective remediation, an independent damp and timber survey conducted by a fully qualified CSRT surveyor who is a member of the Property Care Association (PCA) proves invaluable. In this article, we explore the benefits of such surveys and highlight their role in preserving the health and longevity of buildings.
The Importance of Damp and Timber Surveys
Dampness, Woodworm, Dry Rot, and Wet Rot are common problems that can afflict buildings of any age or type. They not only compromise the structural integrity but can also pose health risks to occupants. Identifying these issues early on is crucial to prevent them from escalating into more extensive and costly repairs. This is where a professional damp and timber survey comes into play.
Qualified CSRT Surveyors and PCA Membership
Engaging a fully qualified CSRT surveyor ensures that the inspection is conducted by an expert who possesses the necessary knowledge and experience in identifying and assessing damp and timber-related problems. The CSRT (Certified Surveyor in Remedial Treatment) qualification is awarded by the PCA, a reputable organisation committed to promoting high standards and professionalism in the property care industry.
By choosing a CSRT surveyor who is also a member of the PCA, customers gain additional reassurance of the surveyor’s expertise and adherence to best practices. PCA membership signifies that the surveyor is part of a network of professionals dedicated to continuous learning, training, and staying up-to-date with the latest industry advancements.
Comprehensive Inspection for Dampness and Timber Issues
An independent damp and timber survey involves a meticulous examination of the property, covering various areas that are susceptible to moisture ingress, Woodworm Infestation, Dry Rot, and Wet Rot. The surveyor will assess both the visible signs and hidden indicators of these problems, offering a comprehensive overview of the building’s condition.
During the survey, the CSRT surveyor will inspect the following:
Dampness: Moisture-related issues can manifest as Rising Damp, Penetrating Damp, Lateral Damp, Condensation, or leaks. The surveyor will identify the source and extent of dampness and recommend suitable remedial measures.
Woodworm: Wood-boring beetles can cause significant damage to wooden structures. The surveyor will identify the presence of woodworm infestation, determine the species involved, and advise on appropriate treatment options.
Dry Rot and Wet Rot: Fungal decay can compromise the structural integrity of timber. The surveyor will identify signs of Dry Rot and Wet Rot, assess the extent of damage, and propose effective remedial measures.
Benefits for Customers
Early Detection: By identifying Dampness, Woodworm, Dry Rot, and Wet Rot at an early stage, customers can take prompt action to prevent further damage, saving significant costs in the long run.
Accurate Diagnosis: The expertise of a qualified CSRT surveyor ensures accurate identification of the issues, leading to appropriate treatment recommendations and avoiding unnecessary expenses on ineffective remedies.
Professional Recommendations: Following the survey, the CSRT surveyor will provide a detailed report outlining the findings, recommendations for remedial action, and estimates for any required repairs. This information equips customers with the necessary knowledge to make informed decisions about their property.
Conclusion
Investing in an independent damp and timber survey conducted by a fully qualified CSRT surveyor who is a member of the Property Care Association is an excellent option for property owners concerned about the long-term health of their buildings. By detecting and addressing dampness, Woodworm Infestation, Dry Rot, and Wet Rot in a timely manner, customers can protect their property’s value, ensure the safety of occupants, and avoid more extensive and costly repairs.
Introduction
When it comes to constructing solid stone walls, traditional wisdom suggests that pointing them with a permeable lime mortar will significantly reduce rain penetration. This belief stems from the understanding that the high rate of evaporation from the wall’s surface would restrict water infiltration to a shallow surface layer, preventing moisture from reaching the inner face. However, a few recent cases on exposed sites that we have surveyed have challenged this long-held assumption, highlighting the need for a closer examination of the factors influencing rain penetration in lime pointed stone walls.
Rain Penetration and Lime Mortar
Lime mortar has been favoured for centuries due to its permeability and compatibility with natural stone. The mortar’s porous nature allows moisture to pass through it, preventing water from becoming trapped within the wall structure. Additionally, the hygroscopic properties of lime enable it to absorb and release moisture, further contributing to the overall moisture management of the wall. These characteristics have led to the widely accepted belief that lime pointing offers a reliable defence against rain penetration.
Evaporation and Surface Layer Protection
One of the main reasons lime pointing has been trusted to limit rain penetration is the high evaporation rate from the wall’s surface. The porous nature of the lime mortar facilitates the evaporation of moisture, creating a protective barrier against deeper water infiltration. It is commonly believed that this evaporation process forms a shallow surface layer, shielding the inner face of the wall from the damaging effects of prolonged moisture exposure.
Instances that Challenge the Assumption
Despite the prevailing belief, recent cases on exposed sites have cast doubt on the reliability of lime pointing alone as a fool proof defence against rain penetration. These instances have shown that under certain circumstances, rainwater can breach the expected shallow surface layer and reach the inner face of the wall. The factors contributing to such occurrences require closer examination to enhance our understanding of rain penetration dynamics and improve wall construction practices.
Factors Influencing Rain Penetration
Several factors can influence the extent of rain penetration in lime pointed stone walls. Exposure to extreme weather conditions, such as heavy rainfall or prolonged periods of wet weather, can overwhelm the evaporation capacity of the wall’s surface, allowing water to penetrate deeper into the masonry. The condition of the stone itself, including its porosity and susceptibility to water absorption, can also impact rain penetration.
Furthermore, the quality and maintenance of the lime pointing play a crucial role. Over time, lime mortar can deteriorate, losing its permeability and compromising its ability to manage moisture effectively. Inadequate pointing maintenance or the use of unsuitable materials during repairs can weaken the protective properties of the mortar, leaving the inner face vulnerable to rain penetration.
Enhancing Rain Penetration Resistance
To enhance the rain penetration resistance of lime pointed stone walls, it is imperative to consider a combination of measures. Applying additional surface treatments, such as water-repellent coatings or breathable sealants, can provide an extra layer of protection against water ingress. Regular inspections and maintenance of the pointing, ensuring its integrity and functionality, are essential to prolong the lifespan of the wall and prevent moisture-related issues.
Conclusion
While the prevailing belief suggests that lime pointing with permeable mortar effectively limits rain penetration in solid stone walls, recent cases have demonstrated that this assumption cannot be relied upon without consideration of specific factors. Exposure to severe weather conditions, the condition of the stone, and the quality of the pointing can all influence the extent of rain penetration. To ensure long-term protection against rainwater ingress, a holistic approach combining appropriate materials, periodic maintenance and potential breathable surface treatments may be necessary. By expanding our knowledge of rain penetration dynamics and refining construction practices, we can better preserve the integrity and durability of lime pointed stone walls in various environmental conditions.
Dampness in buildings is a common problem that can lead to structural damage, mould growth, and negative health effects. Assessing the level of dampness is crucial for understanding the extent of the problem and implementing appropriate remedial measures. One method for assessing dampness in buildings is by using a calcium carbide meter, also known as a Speedy meter.
The Speedy meter is a portable device used to measure the moisture content in building materials such as concrete, mortar, and masonry. It operates based on the principle of the reaction between calcium carbide and moisture. The device consists of a pressure vessel, a pressure gauge, a sample container, and a carbide reagent.
Here’s how the assessment using a Speedy meter typically works:
Preparation: Ensure that the Speedy meter is clean and in good working condition. Also, make sure you have the necessary safety equipment like gloves and goggles.
Sampling: Collect a representative sample of the material you want to assess for dampness. For example, if you’re testing a wall, drill a small hole or use an extraction method to obtain a sample.
Weighing: Weigh the sample and record its weight accurately. This information will be used to determine the moisture content later.
Testing: Place the sample into the sample container of the Speedy meter. Add a measured amount of calcium carbide reagent to the container. The reagent will react with any moisture present in the sample.
Sealing: Tightly seal the sample container to prevent any gas from escaping during the reaction.
Reaction: Gently shake the sealed container to ensure thorough mixing of the reagent and the sample. The moisture in the sample reacts with the calcium carbide to produce acetylene gas.
Pressure measurement: Connect the pressure gauge to the container and read the pressure indicated on the gauge. The pressure is proportional to the moisture content in the sample.
Calculation: Convert the pressure reading to a moisture content value using the calibration curve provided by the manufacturer. This curve relates pressure to moisture content.
By following these steps, you can obtain a moisture content measurement for the tested material. This information helps assess the degree of dampness, determine if remedial actions are necessary, and monitor the effectiveness of any dampness mitigation measures implemented.
It’s important to note that the Speedy meter provides a relative measurement of moisture content and may require periodic calibration to maintain accuracy. Consulting the manufacturer’s instructions and guidelines is essential for proper usage and interpretation of results. Additionally, the Speedy meter is typically used for in-situ testing of building materials and may not be suitable for assessing the moisture content of wood or other materials with different characteristics.
For centuries, brick and stone have been fundamental materials in the construction of houses, standing the test of time with their durability and aesthetic appeal. However, the introduction of modern construction practices has introduced new challenges, leading to extensive damage to our historical buildings. This article aims to shed light on these issues and offer solutions to preserve these architectural treasures.
One common problem arises from the use of electric angle grinders during the process of raking out mortar joints. While these power tools may expedite the process, they can inadvertently cause harm to delicate brickwork. Additionally, the replacement of lime mortar with impermeable cement exacerbates the situation, as it traps water within the wall structure. Over time, this trapped moisture wreaks havoc on the integrity of the bricks or stones, resulting in their deterioration. During winter, the dampness within the walls expands upon freezing, leading to cracking and flaking of the masonry.
Therefore, it is vital to exercise caution before embarking on any repointing endeavours. Take a moment to evaluate the necessity of the task and the reasoning behind it. More often than not, the perceived need for repointing stems from persuasive contractors seeking to convince homeowners of its necessity, even when it may not be required. In truth, genuine cases that demand repointing are relatively rare.
If repointing is indeed essential, it should be carried out meticulously and with the appropriate materials. Manual raking out of the old mortar, paired with the use of lime mortar that matches the desired hardness and grit content, is essential for proper preservation. However, it is essential to note that this process can be relatively expensive depending on the size and style of the building.
By understanding the challenges faced by traditional building materials like brick and stone and implementing appropriate measures, we can safeguard the architectural heritage that has stood as a testament to our history and craftsmanship for generations to come.
Introduction
The government has recently unveiled plans to introduce a significant amendment to the Social Housing Regulation Bill, known as “Awaab’s Law.” This new legislation aims to compel social landlords to address the persistent issues of damp and mould within specified timeframes. The proposals for Awaab’s Law will be implemented through secondary legislation, following the recent allocation of £30 million by the Housing Secretary to enhance the quality of social housing in Greater Manchester and the West Midlands. The tragic death of two-year-old Awaab Ishak, attributed to the presence of damp and mould in his home managed by Rochdale Boroughwide Housing, has spurred the government into taking action. As a consequence, funding for new housing projects has been withheld from Rochdale Boroughwide Housing until they can demonstrate responsible management practices.
Awaab’s Law: Holding Landlords Accountable
During a visit to Rochdale on February 9th, the Housing Secretary met with Awaab’s family and the Interim Chief Executive of Rochdale Boroughwide Housing, where he made the official announcement. Awaab’s Law will incorporate specific provisions into tenancy agreements, allowing tenants to legally hold landlords accountable for failing to provide habitable living conditions. This critical development aims to ensure that social housing tenants have the right to a decent home, free from damp and mould-related hazards.
Secretary of State for Levelling Up, Housing and Communities, Michael Gove, expressed his condolences to Awaab’s family and acknowledged their relentless pursuit of justice over the past two years. Gove emphasized the importance of the new legislation in preventing similar tragedies, stating, “The tragic death of Awaab Ishak should never have happened. He was inexcusably let down, and his family repeatedly ignored.” The introduction of Awaab’s Law will impose stringent time limits on landlords, compelling them to promptly address and rectify dangerous damp and mould issues. Non-compliant landlords will face legal consequences, as the full force of the law will be brought against them.
Advancing Tenant Rights and Improving Housing Standards:
Awaab’s Law will serve as a cornerstone in enshrining tenants’ rights within the legal framework of social housing. The Social Housing Bill will augment the powers of the Housing Ombudsman and Regulator, providing them with increased authority to hold poor-performing landlords accountable. By implementing this legislation, the government aims to create a situation where substandard social landlords have nowhere to hide. The law will empower tenants to demand and expect safe, decent, and warm living conditions across the country.
Outcomes of Awaab’s Law
The introduction of Awaab’s Law is expected to yield several positive outcomes, specifically in addressing the pervasive issue of damp and mould in social housing. Key highlights of the legislation include:
Crackdown on Damp and Mould: Awaab’s Law represents a robust crackdown on the presence of damp and mould in social housing, ensuring that tenants are protected from the associated health risks.
Strict Time Limits: Landlords will be compelled to promptly investigate and rectify serious damp and mould problems within strict timeframes. This provision aims to expedite necessary repairs, minimising health hazards for tenants.
Strengthened Housing Ombudsman: The legislation will grant enhanced powers to the Housing Ombudsman, enabling them to effectively address and resolve issues related to housing quality. This measure will incentivise landlords to improve their performance and respond promptly to tenant concerns.
In conclusion, the introduction of Awaab’s Law represents a significant step toward strengthening social housing regulations and safeguarding the well-being of tenants. By holding landlords accountable for addressing damp and mould issues within specific time
An independent damp and timber survey carried out by a CSRT (Certificated Surveyor in Remedial Treatment) surveyor involves a comprehensive inspection of a property to assess and identify any issues related to dampness, timber decay, or insect infestations. CSRT surveyors are highly trained professionals who specialize in the diagnosis and treatment of dampness and timber-related problems in buildings.
During the survey, the CSRT surveyor will typically follow a structured approach to assess the property. The process may include the following steps:
Visual Inspection: The surveyor will visually inspect both the interior and exterior of the property, looking for any signs of dampness or timber-related issues. They will examine walls, floors, ceilings, and any accessible timber structures for evidence of decay or infestation.
Moisture Measurement: To identify areas of dampness, the surveyor may use various moisture detection techniques such as a moisture meter or thermal imaging camera. These tools can help identify areas with high moisture content, which may indicate the presence of leaks, rising damp, or condensation.
Identification of Damp Sources: The surveyor will try to determine the source of any identified dampness issues. This could include assessing the condition of the property’s damp-proof course, examining plumbing installations, or identifying potential issues with external water ingress.
Timber Inspection: If timber-related issues are suspected, the CSRT surveyor will assess the condition of timbers in the property. They may use specialized tools such as a moisture meter, probing device, or borescope to identify decay or insect infestations, such as wood-boring beetles or fungal decay.
Report and Recommendations: Based on the findings of the survey, the CSRT surveyor will provide a detailed report outlining the identified issues, their severity, and recommended remedial actions. The report may include photographs, diagrams, and specifications for any necessary treatments or repairs.
It is important to note that CSRT surveyors are independent professionals, which means they do not have a vested interest in selling specific products or services. This independence ensures that their assessments and recommendations are unbiased and based on their expertise and knowledge.
Engaging a CSRT surveyor to conduct an independent damp and timber survey can be beneficial when buying or selling a property, as it helps identify and address any potential issues related to dampness or timber decay. Additionally, the survey report can be used as a reference for obtaining quotes from contractors for any required remedial work.
If you are looking to save money, save time and the disruption of unnecessary damp proofing works, then following this information is a good starting point to understand damp proofing, damp walls and damp houses. Alternatively, if you would like honest independent advice please feel free to contact us or view our damp survey options.
Before we begin, we would like to inform you that we provide independent damp and timber surveys by an Independent CSRT surveyor who provides unbiased and impartial advice in the damp proofing and timber treatment sector. As we are not damp proofing and timber treatment contractors or linked to any damp proofing company in the UK. We have no vested interest in selling you any damp proofing and/or timber treatments and therefore provide our clients throughout UK peace of mind that you are not dealing with a salesmen or a damp proofing contractor with products to sell you.
Damp proofing has got a bad name for itself and unfortunately there are so many people/companies claiming to be damp proof specialists out there when a lot of the time, they are not. It is highly important to do your research on the damp proofing company and/or surveyor to ensure you are dealing with a qualified company and surveyor. Two key important credentials to look out for is that the surveyor is CSRT qualified and that he/she/the company, is registered with the Property Care Association (PCA).
So, let’s get to the point… damp proof courses rarely fail and the need for a new chemical damp proof course is rarely, if ever needed.
In basic terms, imagine a water proof material sandwiched between two courses of bricks, for this example; slate, which was commonly used around the UK for damp proof courses during the construction of a building.
The question which should be asked is this; How would this slate damp proof course fail and break down? The straight forward answer is… it doesn’t. Slate roofs can last for hundreds of years which are open to the elements which get pounded by rainwater throughout our British winters. So why would a slate damp proof course fail when it is embedded within a wall? Simple, it doesn’t.
If there has been some movement in a wall let say in one small corner of a house and the damp proof course cracks, then the damp proof course could be damaged. However as long as sufficient evaporation is present (airbricks for example, any ground water would typically evaporate through the air bricks) therefore this doesn’t usually give justification for a new damp proof course and of course does not justify damp proofing your whole house with a new chemical damp proof course.
Therefore, with this in mind you are not usually dealing with rising damp due to the breakdown of a damp proof course. The more likely scenario is that there is another source of moisture from a defect which a lot of the time is obvious to an experienced surveyor or there may be an under lying issue such as a broken drain giving the appearance of rising damp. This is where our independent damp surveyor would step in and provide professional advice and a diagnosis so that you are not wasting money and time on damp proofing works which may only mask the defect for a period of time after which, will then return.
Does Rising Damp Exist?
Rising Damp does exist, however it has to be under the right circumstances. The majority of time rising damp is misdiagnosed by damp proofing contractors in UK to sell products such as a damp proof courses and a make profit for the damp proofing company.
The true matter of the fact is that rising damp can only be diagnosed under laboratory analysis and surveyors carrying out damp surveys in the UK are diagnosing non-destructively with the use of a moisture meter which can only provide an indication of salt contamination.
This is where the problem lies. Moisture meters were not designed to be used as a diagnostic tool to diagnose rising damp in masonry. They are designed to take a moisture content equivalent out of timber. However, over the years they have been widely used to determine salt distribution across the surface of damp walls using the conductivity of the salts in the damp walls.
This method of testing provides qualitative results and in the correct qualified hands and using good old fashioned common sense will get to the root of the problem when analysing meter reading distribution across damp wall surfaces and assessing the environment with other pieces of equipment.
Typically, if you take rising damp out of the equation and examine walls externally and internally for common faults, you would get to the root of the problem as to why a wall is damp, which would consequently provide an accurate diagnosis. Further intrusive investigation may be needed if the common faults are not apparent however on most occasions this isn’t needed by using an experienced qualified surveyor as most of the time the damp proof course is being bridged or you are dealing with condensation and/or another source of dampness.
If you take rising damp out of the equation when conducting damp surveys in properties throughout UK, you normally get to the root of the problem with the use of good surveying techniques. The most important surveying tool a surveyor has, is his/her eyes and the key is to look out for obvious defects which could be giving the perception of rising damp. Defective rainwater goods, high ground levels, defective brickwork pointing and cracked render, to name but a few can easily give you high readings internally to wall surfaces and give the perception that rising damp is present.
A lot of dampness found in properties in the UK tends to be condensation, penetrating dampness from external defects or most commonly low level dampness due to bridging of the damp proof course level.
This is where our independent damp proofing specialist surveyor comes in. As a qualified independent building preservation surveyor (CSRT qualified) his job is to survey for dampness in buildings, locate the damp proof course (if visible) and look for other defects that may be contributing to dampness in the building getting to the root of the problem rather than blanket treatment recommendations such as recommending a new damp proof course, which would only mask the problem for a few years (after spending hundreds even thousands of pounds on damp proofing works) to then be told by a damp proof contractor upon re-inspection of the building under the damp proofing guarantee for example, that it is high ground levels causing the problem or a leaking gutter which then invalidates your guarantee and puts you back in the predicament you were in to start with.
Our goal at Damp Pro is to help save our clients’ money and time to prevent the unnecessary use of damp proofing treatments.
If you would like further advice regarding damp proofing in the UK, please feel free to contact us.
Rising Damp Diagnosis
What did the British Research Establishment (BRE) say?
“The first step must be to check for an existing damp-proof course (dpc). The Public Health Act of 1875 introduced the requirement of a dpc in walls to prevent rising damp. The adoption of this Act into local bylaws took some time, though some enlightened builders were already providing a dpc before 1875.”
“If the building has a dpc, it is unlikely that is has failed as most dpc materials have a very long life.”
“When examining for the presence of a dpc, the possibility that the dpc has been bridged should be checked.”
The above statements are from BRE Digest DG 245 2007 Edition – Rising Damp in Walls Diagnosis and treatment.
With this in mind, we think it would be quite fair to say that the majority of the housing stock in North Wales and the UK are post 1875 and are very likely to have a physical damp proof course present under the public health act and should not have rising damp problems and/or a breakdown of the damp proof course. So why have a new one installed?!
These statements have come from published UK professional articles which completely contradict most surveyor’s/companies observations and recommendations. So it is very important to remember, when carrying out damp surveys that rising damp is very unlikely to be present. More often than not, dampness is present purely by a bridged damp proof course level and/or another source of moisture which can easily be remedied through basic building maintenance. This is where our independent damp surveys come in, saving our customers hundreds often thousands of pounds on unnecessary chemical damp proof course injection installation, let alone the mess and upheaval!
Finding a qualified damp proofing contractor in the UK?
As we are independent surveyors we cannot recommend a specific damp proofing and timber treatment company. However, we would always recommend visiting the Property Care Association website if damp proofing works are found to be necessary to look up damp proofing contractors by using their postcode checker. Most of the time, damp proofing works are not found to be necessary and any works required can be carried out by a general builder.
How do I know I’m using a qualified independent damp proofing/damp surveyor?
Initially it would be best to ensure that the damp proofing surveyor holds the CSRT qualification. After which you should ensure the surveyor is registered through the Property Care Association (PCA). Rest assured, here at Damp Pro we are fully qualified and registered through the Property Care Association.
Who is the Property Care Association (PCA)?
The PCA are the governing body of the damp proofing and timber treatment industry. Members of the PCA are fully qualified, insured and are competent to carry out damp surveys and damp proofing works in buildings. To become a member of the PCA you must hold relevant qualifications in the sector you are applying to become a member of. You need to have been trading for a minimum of two years and demonstrate that you are fully competent to do the job. To maintain high standards members are audited annually to ensure high standards are met and that members are complying to the PCA code of conduct. If a person/company does not meet standards, then they would either be rejected at the application stage or removed from the Association.
Free Damp Proofing Survey
Many damp proofing companies offer free damp proofing surveys or low cost surveys around £90-£150.00. With these damp surveys you cannot be guaranteed a qualified surveyor or even someone who is actually a damp specialist. They may be carried out by damp proofing contractors or building contractors to achieve a damp proofing contract. Most of these damp surveys may also be carried out by commission based surveyors who need to achieve their monthly targets. So the question you should ask yourself is what is free in the world these days? How does a company with overheads afford to send out qualified surveyors at such a low/no cost? They can’t, is the real answer. There must be an end goal which is likely to be a damp proofing contract which could be worth thousands of pounds. So a lot of the time damp proofing works are mis-sold and/or recommended when not necessary at all. Quite often even, sales tactics are used to pressurise a customer at the time of the damp survey or follow up calls to push acceptance damp proofing works. This in a nutshell is wrong and a lot of the time it is the most vulnerable in society that suffers. Rest assured this is not how we operate as we have nothing to sell our customers and are looking to help save our customers money and upheaval of damp proofing treatments in the UK.
If you are looking for independent damp proofing advice before spending money on expensive damp proofing works get in touch today to discuss your survey requirement.
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Historic and listed buildings possess a unique charm and cultural significance, reflecting the rich heritage of our communities. However, these architectural treasures are often prone to specific issues such as dampness, woodworm infestations, Dry Rot, and Wet Rot. Addressing these concerns promptly and effectively is crucial for preserving the integrity and value of these structures. On this page, we will explore the importance of damp and timber surveys in historic and listed buildings, highlighting the expertise of Damp Pro, an independent damp and timber surveying company dedicated to safeguarding these precious assets.
Understanding the Challenges
Historic and listed buildings often face distinct challenges when it comes to dampness and timber-related issues. These structures may have been constructed using traditional materials and techniques, which can make them more susceptible to moisture penetration, wood-boring insects, and fungal decay. Furthermore, alterations made over time, inadequate maintenance, or even inappropriate repairs can exacerbate these problems.
The Role of Damp and Timber Surveys
Damp and timber surveys play a pivotal role in assessing the condition of historic and listed buildings. Our damp and timbers surveys are comprehensive investigations conducted by a fully qualified independent CSRT surveyor to identify the presence and extent of Dampness, Woodworm, Dry Rot, and Wet Rot within the structure. By conducting these damp and timbers surveys, building owners and conservation bodies can gain a detailed understanding of the issues affecting the building and make informed decisions regarding necessary remedial actions.
Damp Pro: Protecting Our Architectural Heritage
Damp Pro is an esteemed independent damp and timber surveying company with a deep understanding of the unique requirements and challenges associated with historic and listed buildings. Our experienced and knowledgeable surveyor specialises in providing comprehensive damp and timber surveys tailored specifically to these structures.
Here are some reasons why Damp Pro stands out in the field:
Expertise: Extensive knowledge of historic construction techniques, materials, and the various factors that contribute to dampness and timber-related problems in these buildings.
Advanced Technology: Damp Pro utilises cutting-edge equipment and techniques to diagnose and monitor issues effectively. By combining traditional methods with modern technology, such as moisture meters, thermal imaging, and endoscopic cameras, we can discover hidden problems within the building fabric.
Preservation-Oriented Approach: Damp Pro recognises the importance of preserving the historic fabric and character of listed buildings. Our damp and timber surveys focus not only on identifying and resolving current issues but also on implementing long-term solutions that respect the architectural integrity of the property.
Collaborative Partnerships: Damp Pro works closely with building owners, conservation bodies, architects, and contractors to ensure a holistic approach to preservation. By fostering collaborative relationships, we facilitate the seamless implementation of remedial measures while adhering to relevant regulations and guidelines.
Conclusion: Preserving our historic and listed buildings requires diligent attention to the issues of Dampness, Woodworm, Dry Rot, and Wet Rot. Damp Pro, as an independent surveying company specialising in these concerns, plays a crucial role in safeguarding these architectural treasures. By conducting thorough damp and timber surveys, our expert surveyor ensures that these structures are properly cared for, enabling future generations to appreciate and cherish our rich cultural heritage. Whether you own a historic property or are responsible for its maintenance, entrusting Damp Pro with your damp and timber survey needs ensures that you receive professional guidance and tailored solutions. With our preservation-oriented approach, advanced technology, and extensive expertise, Damp Pro is committed to maintaining the beauty and integrity of our historic and listed buildings for years to come.
