The phrase “cavity wall” describes a wall composed of two “skins” with a hollow centre. Usually, the skins are comprised of masonry such as bricks or cinder blocks, which can be porous and absorb rainwater or moisture over time.
Metal flashing is installed from the inner wall to the exterior wall to divert water away from the cavity. Weep holes at the bottom of each level, two metres apart, allow wind to create an airstream which facilitates evaporation of water outside. Additionally, weep holes are also installed above windows to protect wooden window frames from rotting.
Ensuring both walls forming the cavity have an effective Damp Proof Course (DPC) and waterproof coatings is essential to ensure the structure’s impermeability. It is important to check these regularly to make sure they are not damaged. For advice and help regarding cavity wall insulation, please call us on XX.
Converting basements and other subterranean spaces into dry rooms can be both economical and enjoyable ways to expand one’s home or better utilize existing space. Constructing a damp-proofed cavity wall is the foremost approach to preventing moisture damage in the long run.
Damp-proofing cavity walls prevents water and moisture from permeating interior voids in walls and foundations. Continuous hollow walls effectively inhibit moisture transfer between the outer wall and inside.
London Damp Treatments offer three distinct types of structural waterproofing protection:
Type A barriers offer a protective barrier between the public and any hazardous areas. They are designed to reduce the risk of harm to any person and are generally used as a safety measure in areas where there is a potential risk of falls of more than 1 metre.
Type A barriers provide a safe boundary between members of the public and any dangerous areas. They are designed to reduce exposure to harm and are usually used in locations where a fall of greater than one metre is possible. The structure is likely to be constructed from concrete or masonry and provide only minimal protection from water infiltration. Consequently, the main defence against water is an internal or external barrier system, coupled with a suitable ground drainage system where necessary.
Type B protection is structurally incorporated into a structure and is designed to provide protection against a fire inside the structure. This type of protection is usually used in buildings that are at least two storeys in height and have an area of over 200 square meters. It is designed to keep the fire contained so that it does not spread and cause damage to other parts of the building.
Type B protection is designed to offer structural protection against the spread of fire within a building. It is typically used in buildings over two storeys high and with an area exceeding 200 square metres. The purpose of this protection is to contain the fire, thus preventing damage to other sections of the building. Depending on the grade of basement use, the structure is designed and built with reinforced or pre-stressed concrete to Eurocode 2, BS EN 8500 in order to minimise water penetration, and BS 8102 or BS 8007 to prevent it.
Type C drainage systems provide protection from flooding by draining excess water away from the property. This type of system is most effective in areas of low risk, as it only deals with surface water and does not provide protection from rising groundwater. To ensure the system is working effectively, it must be regularly checked to make sure it is draining away any excess water.
Structural concrete and masonry are used to create a barrier against water entering the structure. An inner skin is applied to walls and floor to form a hollow, which channels, collects and discharges any water that enters the basement. Drainage systems and sump/pump units are put in place to remove groundwater from the structure.
Water is channelled into drainage systems by hollow drains, usually installed on walls and floors. These conduits then direct water to sumps or drains to evacuate the structure safely. Traditional cementitious tanking systems, which work by blocking water, have been replaced by cavity drain membranes. These membranes permit water to pass through the structure while controlling it in the air gap and guiding it to a proper drainage point. This prevents pressure from building up against the inside of the structure, and the air space between the membrane and the structure allows it to breathe and dry out.
Membranes can be loosely placed on floors and fastened to walls with suitable plugs and sealing compounds, necessitating minimal or no groundwork. Walls can be dry-lined or plastered straight away after the membrane is set, and floors can be levelled or have a floating dry board system installed.
The cost of dealing with a damp issue varies according to several elements, including the dimensions of the property, its architecture, the root cause of the damp, and any materials that need to be used.
With an abundance of information to consider, please feel free to reach out to our qualified team or call 0208 0162508 to book a survey and have one of our friendly staff inspect the property and thoroughly assess the circumstances, offering you a competitive quote.
London Damp Treatments is a renowned damp proofing and property preservation organisation in the UK. Our team has been accredited by the Property Care Association (PCA), so you can rest assured.
We have had success in resolving issues in many households. Some of the matters we have sorted out include:
Condensation results in steamed-up windows, moist or wet walls, mould accumulation on furniture and clothing, and Aspergillus app, otherwise known as ‘Black Spot Mould’.
Please don’t hesitate to contact our outstanding customer service or call XX if you have any queries about damp in a building. We’d be delighted to provide you with the information and knowledge you need for your request, discussed honestly and openly. We provide no-obligation damp surveys of sites across the UK. Our team of experienced professionals can help you identify the source of any damp issues, as well as provide advice on how to rectify them. Our surveys are comprehensive, taking into account all factors that may be contributing to the problem, such as ventilation, insulation, and water ingress. With our expertise, you can rest assured that you have the best information to make informed decisions about any remedial works. Get in touch with London Damp Treatments now and talk to a specialist. For further information, please contact 0208 0162508. For more information, please call 0208 0162508.
Max and his team have been at our property all week and I really can’t thank them enough for the fantastic job they’ve done on plastering both our walls and ceilings. They have literally transformed the appearance of our house! Not only has Ma…
From start to finish Max has been incredable. His knowledge lin damp proofing is second to none and his team where very clean and polite. The plastered finish was like glass so happy we choose Max Plastering for job.
Lovely bunch of lads left a very neat and clean job. Problem was solved.
Perfect Finnish and all left clean and tidy and no mess. Used Max previously and would not hesitate to ask him carry out more work.
Max, Harvey and Stuart arrived promptly as arranged. Done a great job on our outside rear wall. Work completed to a high standard, removal of all old material and cleaned up after themselves. I am so pleased with the standard of their work they ar…
They turned up on time and carried out the works in a very professional manor leaving the front of the house clean and tidy. Very impressed would definitely recommend.
I have to say that on every level Max (with Stuart and Harvey) did an extremely professional job! They explained what they were going to do, they were polite and courteous and respected that they were coming into our home. The plastering is of the…
I called max and he managed to come around the same day to do a survey. The next day I received an extremely detailed survey compared to any other damp proofer which made me feel very at ease that he was going to do the right job. Max and team tur…
