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Bathroom Fitting

How to damp proof bathroom paint

Anonymous user 28/02/2024 - 3.56 PM

Hi all, our bathroom has been painted using bare plaster paint, however silly us did not damp proof the plaster. What is the best way to do this over the paint? if possible? A contractor told us to just use eggshell as top coat. Any other recommendations? What about in the shower area where water will splash on the walls? The bathroom was replastered and the house rendered as the damp from the shower had soaked all the way from inside to out. So how best to stop this? EDIT: in response to the people who have answered, the walls are currently just one coat bare plaster paint all the way round. We will be tiling half way up the wall. It is the first floor. Is there anything we need to do to protect plaster before tiling in the shower area where direct water will hit? Paint will be bathroom/eggshell paint.

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4 Answers

Bulger Wicks Decorating Limited

Rating: 5 out of 5

Chiswick, London

Hi there, I'm not sure if you are referring to general paintwork in a bathroom or a specific area in the bathroom. Plaster does not need any special treatment in general areas of a bathroom (away from direct water, such as in a shower). There are paints that deal better with the slight condensation you get in a bathroom. Acrylic Eggshell (sometimes referred to as "kitchen/Bathroom paint" in DIY stores) is not affected by moisture in the air. There are also anti-mould paints such as Zinsser Permawhite which are very good where you have mould issues. If you get a lot of condensation, you can use an anti-condensation paint - these mostly allow water to be absorbed into the paint coating and dry out over the course of the day. EDIT: In the shower area, you can get waterproofing coatings that are applied to the walls prior to tiling. Mapei do a "shower waterproofing kit" available at places like Screwfix & Toolstation, or Ardex WPC is also a simple waterproofing system prior to tiling probably available at tiling shops.

Answered17 January 2021

JJL BUILD LTD

No reviews yet

Hornchurch

Hi there I think it also depends on which floor the toilet is, as most ground floor toilet tends to get more damp. It will be great if you can send a picture of the damp details so we can have a better idea. It looks like you don't have tiles from your description, I will suggest new tilings over the bathroom walls esepcially the shower area. thanks

Answered17 January 2021

Spectrum Interiors

Rating: 5 out of 5

Kettering

Hi there, as above previous comments, shower walls should be tiled to full height,or shower boards fitted as an alternative finish, then sealed correctly to shower tray. I would suggest that you look into fitting an extractor vent fitted with moisture sensor these also have timer settings which will then alleviate the condensation in the bathroom. During the colder months you toilet and cistern may condensate on the surfaces due to the incoming mains water being so cold.

Answered17 January 2021

BROADWAY BUILDERS

Rating: 5 out of 5

Slough

Hi there. If you already have damp in the bathroom and can see mold on the corners, you need to get ride of those by washing them then use the acrylic eggshell know as bathroom paint. Also if you don't have good air circulation in bathroom the damp will be back again and again. Please.try to see to you could have a fan with time delay in bathroom, then problem is solved. Good luck

Answered22 January 2021