According to the English Housing Survey, around 904,000 homes in England had damp problems in 2021 – meaning it’s a more common issue than some might think. Condensation is the most common cause of damp in many houses, particularly in bedrooms, bathrooms and kitchens. However, it can be treated without having to call in  professionals. Read on to learn how you can cover a damp stain using Thompson’s One Coat Damp Seal.

Thompson’s One Coat Damp Seal is a low odour, solvent-based product, which works to permanently seal and remove damp stains and prevent damp from re- occurring in just one coat!

Before applying our One Coat Damp Seal, remove any mould and fix the source of the damp issue. We recommend removing mould using a mould killer to ensure the best results – as if mould is present, it will simply grow through the seal and any paint applied to the surface. The seal can be applied onto a damp surface; however, it is important to ventilate the room and open doors and windows to make sure it is not dripping wet. It is also important to remove any wallpaper or flaking paint with a damp cloth and fill in any cracks or holes in the surface if needed.

Next, apply Thompson’s One Coat Damp Seal with a brush or roller over the affected area, plus the space 30cm around it. Always allow the seal to dry for four hours before decorating over the top.

There are many reasons why you should choose Thompson’s One Coat Damp Seal, but here’s just some of the benefits…

  • The micro-porous formula allows trapped moisture to escape, without letting moisture in
  • It’s highly pigmented and appears white on surfaces to prevent damp stains from being visible through paint for a professional finish
  • It requires one coat making it easy to seal and cover stains quickly
  • Paint or wallpaper can be applied just four hours after application

Please note, as the product is solvent-based, never dispose of it into drains or watercourses. Instead, contact your local authority to find out how to safely get rid of it.