The good news is that it is possible to paint over damp proof paint without diminishing the effectiveness of the paint. Most damp proof paints represent a one-coat solution, with this first coat serving as the damp proof layer at home.
The seal will be touch dry in only two hours. After four hours you will be able to paint or wallpaper over the damp area.
One Coat Damp Seal is tough on damp. It'll permanently seal and remove damp stains in just one coat and is overpaintable in just 4 hours.
So yes, you can paint over the waterproofing membrane! However, before we get into how to do this properly, let's take a quick look at what exactly these membranes are made of—and why they're so important when painting over them.
When painting over damp proof paint, it's crucial to wait until the surface is completely dry. This will prevent adhesion issues and ensure the paint's effectiveness.
If these conditions are followed, then you're left with a high-performance, long-lasting damp barrier in just 2 coats, that can last for 20+ years. Read our guide to applying damp proof paint.
Allow sealant to cure for the specified time and paint over with oil or water based paint. Sealant will normally cure in 24 hours and strengthen over 7 days (longer in cold or damp conditions).
The good news is that it is possible to paint over damp proof paint without diminishing the effectiveness of the paint. Most damp proof paints represent a one-coat solution, with this first coat serving as the damp proof layer at home.
Pro tip - Waterproofing before painting is a must for a dry and healthy home. What adds to that protection is "waterproof paint". The combination of the two keeps your house damage-free for longer.
Allow 45 days drying time before applying latex paint over Thompson's® WaterSeal® Clear Multi-Surface Waterproofer. Allow a minimum of 3 days drying time before applying oil based paint over Thompson's® WaterSeal® Clear Multi-Surface Waterproofer. Length of protection will vary depending on environment.
Apply one coat and, if necessary, a second coat may be applied and brushed out approximately 30 cm beyond affected area. Drying time one-two hours in good drying, well-ventilated conditions. Re-coating time two hours between coats in warm conditions. Allow two hours before applying a topcoat or wallpaper.
Allow at least 48 hours to dry; however drying time will vary depending on the substrate, temperature, and humidity. Allow minimum of 30 days drying time before applying oil based paint over Thompsons® WaterSeal® Clear Wood Sealer.
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.
Polycell One Coat Damp Seal has been specially formulated to seal patches of penetrating damp on interior walls and ceilings in just one coat, preventing them from showing through and spoiling decorations. Polycell Damp Seal has a matt white finish that can be decorated if required.
Damp proof paint is specifically formulated to protect against damp interior walls. This type of paint can also be used as a primer, prior to painting with a decorative finish paint.
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.
If You Do Decide To Paint Over Damp
However, as we've just said, moisture can still build up behind the paint and continue to cause damage. So, while waterproof paint may be a good short term fix, it's always best to stop the damp itself so as not to deal with problems later on. So now you know!
Only 'mist coats' of water based Dulux (or similar) 'Trade' emulsion paint can be used and not for a minimum of three weeks following completion of the damp proofing. The walls should not be wallpapered or lined until the walls are completely dry.
Applying a second coat of paint before the first coat has adequately dried will result in the new coat peeling, cracking, or clumping.
Sure. Maybe scuff them a little and paint with gesso. As long as you get adhesion, it should be fine.
Compatible with water-based paints only. *Contact Technical Services for other conditions not listed and/or additional information. RedGard® has tested and complies with Uniform Plumbing Code and International Plumbing Code standards for use as a shower pan liner per IAPMO Research and Testing, Inc., File No. 4244.
Ghosting is when damp air and particulates like soot and dust condense on a wall or ceiling in streaks or lines. Ghosting can result from poor ventilation, improper insulation, humidity, and a high concentration of particulates in the air.
Condensation Due to Poor Ventilation
Poor ventilation can cause excessive condensation on the ceiling, leading to damp patches. This is a common issue in bathrooms and kitchens, where steam from showers or cooking can accumulate in the air. Over time, excess moisture can cause damp patches on the ceiling.