London sits on the Thames Valley Basin, which is clay based and this means buildings are susceptible to rising damp and mould. Older London properties often succumb to damp, which can lead to serious damage and hefty repair bills and in this short article, we take a look at the different forms of damp that can impact London buildings.
Rising Damp
Moisture that rises up from the ground poses a major threat to properties in London and surrounding areas and should the damp proof course be damaged in any way, damp can rise up the walls and penetrate brickwork, mortar and render. It is always prudent to closely inspect exterior walls near ground level, looking for signs of excess moisture; ground movement can cause the DPC membrane to split, thus allowing damp to jump the DPC and rise up the walls using a capillary action, much like a sponge soaks up water. Crumbling masonry is a sure sign that rising damp is present and that demands further investigation to ascertain the cause.
Penetrating Damp
Damp that enters a building via the roof or exterior walls can penetrate into the interior and regular inspections are advised. A leaking roof is a common way for rainwater to penetrate the interior roof structure and regular inspections are advised, especially after a storm. All exterior walls should be regularly inspected, looking for crumbling mortar, masonry and render. Window and door frames are another place where damp can impact a building, caulking should be inspected and repairs carried out where necessary.
Condensation
When moist air meets cold surfaces, condensation forms and if you notice a buildup of water droplets inside your home, this is a sure sign that moisture is entering the interior. Of course, there will always be condensation that forms when you run a hot bath, take a shower or cook food and this can easily be dissipated by opening windows to dry out the air. Some homeowners keep a dry cloth in the bathroom to mop up condensation as it forms, which does prevent damage to surfaces. When preparing food, it is wise to use the canopy fan to dissipate moisture and/or open windows. In the event you notice condensation on walls, you need to arrange for one of our surveyors to inspect your home to identify the cause, which will enable you to carry out effective repairs.
Mould and mildew
Mould thrives in damp and humid conditions and this is regarded as a health hazard; tiny spores are released and when inhaled, can lead to respiratory issues. Black mould is the most dangerous and if you suspect that mould or mildew is present in your home, call London Damp Surveys on 0207 305 5997 or fill in the online form and we will arrange for a surveyor to inspect your property.
Damp is not something you can afford to overlook and if you would like an accurate assessment, we service all areas of London.
