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PermaSEAL Damp Proof Paint 5L Reviews

4.6 Rating 16 Reviews
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Damp Proof Membrane Paint
PermaSEAL Damp Proof Paint is a high performance liquid damp proof membrane. All you need to do is brush or roller it on to a sound masonry surface to create a damp proof and vapour proof layer.

Forms a flexible membrane that stops water & vapour coming through, reducing the chances of damp forming 
Blocks penetrating damp on interior walls and ceilings in two coats
Highly effective damp proof paint for internal walls that can be applied to damp surfaces 
Can be painted over with standard emulsions or wallpapered over when dry 

This high quality professional product can be used as a general damp proof paint for walls and ceilings as well as a highly effective damp proof membrane (DPM) for floors. 
With a consistency similar to thick emulsion paint, it is available in two colours:

white damp proof paint
black damp proof paint

Benefits of PermaSEAL Damp Proof Paint
PermaSEAL damp proof paint is a highly adaptable and powerful multi-purpose product. It is:

Fast-drying
Ready to use straight from the bucket
Fully waterproof
Solvent-free 
Professional product
Dries to a semi-gloss finish
Stops damp and vapour damaging decorations
UV resistant

Damp Proof Paint Uses
PermaSEAL damp proof paint is a multi-purpose high performance product. It can fulfil a range of purposes, including:

A general interior damp proof paint for multiple surfaces including render, plaster, brickwork. Suitable for both walls and ceilings.
Floors: a damp proof floor paint that can be applied above and below screeds to provide a damp proof membrane. It needs to have a further coating to protect it from damage.
Walls: a damp proof wall paint that can be used under a render as a waterproof layer.
Externally: below ground as a primary waterproofing membrane behind a cavity drain membrane (Speak to our technical advisors).
Tiling: under tiled areas as a secondary protection for wet areas such as bathrooms.
Bunds, silage and sewage tanks: protects concrete from silage attack.
Gas Barrier: protection against methane and radon penetration.
Timber: joist ends can be waterproofed before installation into damp walls

Note: Speak to one of our technical advisers if you are considering using this product in a basement as there are risks involved.  For areas of water ingress under hydrostatic pressure we suggest Permaseal Tanking as a waterproof barrier.
How to Use Damp Proof Paint
Preparation
Make sure that all surfaces are sound, free of loose material, dust, oil, grease, rubber marks etc. PermaSEAL Damp Proof Paint should not be applied over any previous coatings like emulsion paints and bitumen as these can stop it working or bonding effectively. 
When using as a damp proof paint, ensure that any masonry / brickwork is flush and pointed. All defects in existing surfaces should be made good. Ideally, you want a smooth surface with a trowelled or brushed finish. 
When using as a liquid DPM make sure the substrate is load-bearing, and that any laitance is removed mechanically (common on new concrete floors/screeds). Speak with a technical adviser if unsure.
How to apply Damp Proof Paint
Before applying the damp proof paint, stir the contents of the bucket well. The damp proof paint is now ready to be applied by brush or roller. It’s that simple. Follow decorating best practice.
When using as a damp proof wall paint for treating internal walls, the best method is a sandwich system. This is where you chip off the render and then apply the damp proof paint before applying new plaster. 
We recommend two coats are applied for all purposes. All subsequent coats should be applied at right angles to the previous coat. 
Before applying a second coat, allow the first coat to become touch dry. This is typically within one hour. The second coat should be applied within 24 hours of applying the first coat. Once the second coat is dry, you can paint over it, or apply further decoration such as wallpaper.   
How much Damp Proof Paint do I need?
To achieve a damp proof barrier, PermaSEAL Damp Proof Paint must be applied as specified and not stretched to cover larger areas. It has a coverage rate of 1 litre/m² when applied in two coats each of 0.5 litres /m². For more details click on the FAQ tab. 
You can read reviews in the review tab, highlighting why PermaSEAL is the best damp proof paint on the market.
PermaSEAL - Complete solutions. Made possible.
PermaSEAL damp proof paint is part of our complete PermaSEAL range of damp proofing products where quality, value and technical excellence come together. If you have questions around the way this powerful multi purpose product can be used, give our team a call. You can also read our FAQs in the tab where we cover some of your commonly asked damp proof paint questions.   
Related Content
Return to our Damp Proofing Products section to browse more items. Read our Guide to Internal Damp Proofing. If you still have questions then read our article on Does Damp Proof Paint Really Work? 

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Product has only been down for a month and was used as a precaution measure in an area I was confident wouldn't be damp. That said I didn't want to take the risk with finished levelling and flooring going down. Application was simple and the product felt like it was offering a good barrier once dry.
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Posted 4 years ago
Permaseal is brilliant stuff! We bought a semi with a plot that sloped steeply down from the side and the back: a garage had been created from a retaining wall at the side and built into the slope of the garden. Despite being by the house, the garage was pretty useless - the walls seeped water in heavy rain and were almost always damp. The floor flooded occasionally, too! The big problem was the walls, but eight years ago, I painted them with permaseal and they have stayed watertight. This year, I repainted the walls to further strengthen the damp proofing and cover stains at the worst places. I used permaseal, of course. It has been so successful that we have re-roofed the garage and fitted electricity and LED lighting as we have a useable space (we have worked round the odd puddle on the floor!
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Posted 4 years ago
Have not had the opportunity to use this product yet but delivery was quick and can recommend Permaguard
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Posted 4 years ago
Did the job, a bit of cracking so over painting was necessary. Time will tell if it stops my damp in my cellar. Great service form everyone.
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Posted 4 years ago
absolutely wonderful! Strongly recommend.
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Posted 4 years ago
Brian Ruddick
Verified Reviewer
perfect product will definitely use again
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Posted 4 years ago
Steven White
Verified Reviewer
Author didn't leave any comments.
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Posted 4 years ago
Great product
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Posted 4 years ago