Use water-proof sealants, paints and membranes to protect your home. Great ventilation helps keep moisture out of your home. Monsoon safety like repairing cracks, leakages and redoing wall construction helps avoid moisture and leakages. Replace old leaky pipes with new fixtures.
If the walls that are affected by dampness are external, make sure to remove all cement plaster on both sides (and if possible, let the exposed walls out to dry) and redo the affected area. Afterwards, use a waterproofing paint to cover the area and take necessary steps to minimize contact with water/moisture.
A product called Three in One Foil is a very good covering for damp walls, it has to be stuck to the wall like wallpaper with a special adhesive that sticks to damp. Once it has dried the foil is then cross lined with lining paper horizontally and once more vertically then decorated to you're chosen finish...
Exterior waterproofing coats can be applied to the exterior walls to stop water from penetrating the walls. The barrier that a waterproof coat will create will insulate walls and keep out rain and moisture, keeping walls from becoming damp. You can treat dampness in the interior walls by waterproofing the roof.
To an extent, damp-proof paint is effective. Provided you have no existing damp issues and a solid DPC (damp proof course) installed, there is no reason why you can't use damp targeting paint as an added layer of protection. That being said, it is not a fix to existing damp issues which is where many people go wrong.
Damp patches on interior walls increase in size during periods of heavy rain. The best way to treat penetrating damp is to apply a water-repellent treatment like Stormdry Masonry Protection Cream to halt further dampness and allow walls to dry out.
There are several causes for damp patches appearing on interior walls including damaged guttering, cracked roof tiles and more commonly condensation. Condensation forms when warm moist air within a room touches a cold internal wall or surface.
Polyurethane. This is one of the best waterproof chemical for wall plaster which is used for roof waterproofing and on exposed areas. It is also one of the most expensive chemical waterproofing methods available in the market.
Fill a bucket with water and a mild detergent like washing up liquid. Or use a dedicated mould remover to make quick work of it. Dip a cloth in water and wipe the mould off the wall. Don't brush it as this can release mould spores.
Thompson's Water Seal uses a unique micro silicone emulsion to stop water penetration. Apply Water Seal directly onto damp surfaces to provide long lasting waterproof protection within hours.
DRYLOK® Wet Wall Bonding Primer can be Applied to dry, wet, bare, or precoated masonry, concrete, or stone structures before painting or waterproofing (not for use on fishponds). It offers outstanding adhesion and efflorescence and mold & mildew resistance.
To stop rising damp in walls, a remedial DPC needs to be installed. Since 2000, the most popular and effective method for installing a new damp-proof course is Dryzone Damp-Proofing Cream – a fast, uncomplicated and effective way of stopping rising damp at its source.
In a lot of cases, you can simply hack back to the original masonry and re-render and re-plaster the damp wall with a water-resistant render. This will keep any residual moisture in the wall and stop it from passing through to new finishes whilst allowing the wall to dry out naturally.
Open your windows to improve air flow – Ventilation matters
Open the bathroom windows after having a bath and the windows of the kitchen and home to let the fresh breeze come in, allowing the damp air or excess moisture to pass out the window and not to settle down in fixtures or walls.
Use fans to move air around the damp walls. Also use dehumidifiers, which can help remove moisture from the air and walls. Professionals use tools like moisture meters, infrared imaging devices, dehumidifiers and heavy-duty fans. That ensures the walls are truly dry before further repair, painting or refinishing.
Increase air circulation by using fans and by moving furniture from wall corners to promote air and heat circulation. Be sure that your house has a source of fresh air and can expel excessive moisture from the home.
The most common way to damp-proof a wall is to apply a damping resin, epoxy, or spray to the surface of the wall. You can also use plastic sheeting to cover exterior wood walls, or silicone to fill in gaps in masonry and keep dampness out.
Rustins Damp Seal is a fast drying high performance interior paint which permanently covers damp, water stains and most household stains. It dries with a long lasting permanent seal over damp walls and ceilings and can be over coated with gloss or emulsion paint as well as wallpaper.
Made with a unique solvent-based formula that combines a state-of-the-art waterproofing resin with Portland cement to create a coating that stops up to 34psi of water pressure. WaterTite® Waterproofing Paint can be applied to dry, damp or wet surfaces, so water problems can be cured immediately.