PermaSEAL 3 Damp Proof Membrane Kit 10m²
Rating: 90 / 100

A high quality damp proof membrane kit that contains all you need to protect internal walls against damp & the reappearance of salts. It is specifically designed for application on to damp walls to isolate them from new finishes.

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Availability: >In stock


RRP £130.00 Ex VAT
£87.50 Ex VAT £105.00 Inc VAT

Damp Proof Membrane Kit - 10m²

Our damp proof membrane kit contains all you need to damp proof walls internally above ground. Once the underlying damp issue is resolved, the high quality 3mm mesh membrane creates a physical barrier to prevent further damage and salt contamination.

The PermaSEAL 3 plaster membrane included in the kit provides an excellent key for a range of finishes. It can be rendered or dot and dabbed immediately after installation. This significantly cuts down the time of the remedial work.

The Damp Proofing Membrane Kit includes:

  • 1 x Roll of PermaSEAL 1m x 10m 3mm Meshed Membrane (10m²)
  • 200 x PermaSEAL Plaster Plugs 70mm
  • 200 x PermaSEAL Sealing washers
  • 1 x 7mm Masonry Drill bit

Membrane Kits for Damp Walls

The PermaSEAL 3 mesh membrane kit is ideal for damp walls. It is specifically designed to be applied to damp walls to isolate them from new finishes. The membrane kit’s PermaSEAL 3 mesh membrane is impervious to moisture and moisture vapour. This means they create a barrier between the old surface and your new finish. This effectively isolates damp walls and prevents any new salt deposits on the surface plaster and damage to decoration.

Salt Contaminated Walls and Damp Proofing

PermaSEAL 3 Mesh membrane is the ideal product for isolating salt contaminated surfaces. These surfaces can often appear damp in periods of high humidity. The hygroscopic salts that are contained in the surface attract the damp in the air to the surface giving the appearance of a darker, damp patch. This is often misdiagnosed as penetrating or rising damp. The membrane simply isolates the background contaminated substrate from the new finish alleviating any signs of damp.

Damp Proof Membrane Installation

The mesh membrane installation is straightforward. Once the underlying damp issue has been resolved or a new injection damp proof course has been installed, you can simply apply the mesh membrane to the wall. Follow these steps:

  1. Clean the substrate to obtain as flat a surface as possible. Remove any damaged, loose or crumbling plaster.
  2. Cut the membrane to size with a sharp knife or scissors.
  3. Fix the 3mm membrane (with the mesh facing outward) to the surface with plugs. It can be fitted horizontally or vertically.

Jointing - The 3mm mesh membrane can be easily bent around corners as it is a very flexible material. Alternatively, it can be butt jointed and sealed with PermaSEAL Fleece Overstrip

Finishing - Plasterboard panels can be fixed to the membrane by the dot and dab method (minimum of 50% board coverage with the dab adhesive), giving a dry surface ready for immediate decoration.

For more information on all aspects of installation including jointing and finishing, which plaster to apply and how to avoid bridging view the Download tab.

Damp Proofing Internal Walls Video:

Watch this video to see just how easy it is to install a damp proof membrane to protect your internal walls from damp.


PermaSEAL - Complete Solutions. Made Possible.

Our PermaSEAL 3 membrane kits provide a solution to your internal damp proofing needs. If you have any questions around installing mesh membranes or damp proofing in general our experts are on hand to provide free advice. Simply call us on 0117 982 3282.

Related Content

Read our Causes of Damp Guide and our How to Complete Internal Damp Proofing for more on damp proof membranes and resolving issues with damp.


  • Membrane kit that contains all you need
  • High quality mesh damp proofing membrane
  • Ideal for internal damp proofing
  • Ideal when space is a premium
  • Provides an excellent key
  • Life expectancy of 50 years
  • Highly resistant to salts
Model: PSDPK10
Manufacturer: Permagard
Packaging: as a kit
Size: 1m x 10m x 3mm
Coverage: 10m²
Country of Manufacture: United Kingdom

Need more information?

Speak to our technical experts.
0117 982 3282

Easy to use kit

Products good, but drill bit supplied is too small. The fastners kept bending and snapping so wasted quite a lot before using a bigger drill. Once I started using a larger bit (8mm) I was able to do job much quicker. Also kit didn't include enough fixings for working to suppliers own guidelines which is odd when its supposed to be a kit. So you will need an extra pack which adds to the cost!!!!

Permagard Reply:

Thank you for taking the time to leave positive feed back its very much appreciated. We have found that a 7mm drill bit offers the best fixing hole in most substrates however agree that in some harder substrates an 8mm will work better. With regards to the number of plugs supplied we tend to over supply in all our kits. With this kit you will require (at recommended 250mm spacings) a total of approx 150 plugs whereas we supply 200. However we appreciate that if some break this will decrease the number you have to fix the membrane.

The permagard was brilliant to use

Very easy to use and looks as though it will do the job. Excellent customer service too.

Kit has been upgraded

At Permagard we listen to our customers, due to customer reviews and feed back of our damp proof membrane kit we have increased the amount of plugs supplied up to 200 now with seals!

Please keep the reviews coming so we can continue to make our products even better!

The Permagard Team

good stuff

this is a good quality kit,and it works.

however i found an 8.5mm drill bit was needed,any smaller and the plugs dont go in,the plugs are a little flimsy and bend,unless the hole is big enough.

but all in all im happy with this product,and being a professional damp proofer/renovation company,i can see us using this over cement based tanking.

Best kit out there

I was expecting the job to be difficult and time-consuming but I was pleasantly surprised.It was the first time I had used a kit like this before but it was so simple and easy to complete. Fast delivery too, cheers.

if you want to do it right, use this

just re done someone else's poor work, damp proofing failed, they drilled and rendered the walls but damp came back as they didn't do it correctly, i've just chopped off there work and re drilled and injected myself, fitted the above kit which was easy to cut to size and use on my own, first time i'd used it as well tbh.
gave the customer a option of wet plaster or dot and dab and they went with the dry solution which can be decorated sooner, fixed really well, could have done with some more fixing for me in the kit but then again i like to use plenty, loads of mastic, so maybe one tube of mastic less and more fixing?

wished i'd had this years ago, could have saved me loads of time and seems to be a lot better job, as im the one who will be also decorating and putting skirting back, this is quicker and for me loads better, clean and hardly any waste, apart from one tube of mastic left, as long as you remind the plumbers and other trades to mastic any holes they drill into it afterwards rads etc, can't see this going wrong in my life time.

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