Quick Guide To Damp Proof Membranes

If you are looking for a damp proof membrane for walls, there is a lot that needs to be considered. 

If you are looking for a damp proof membrane for walls, there is a lot that needs to be considered. 

You need to make sure that the damp proof membrane you choose offers excellent cohesion, strength, and stability. 

In this guide we are going to reveal more about damp proof membranes, their importance, and the different qualities that you should be looking for when purchasing damp proof membranes for walls. 

What Are Damp Proof Membranes And How Do They Work?

Damp proof membranes are created from plastic, which means that they offer protection against moisture. 

The membrane’s surface is formed into an astute formation, which will generate an air gap that enables the water to evaporate, while ensuring the wall is left unobstructed. 

Essentially, applying a damp proof membrane to your walls can be an exceptional solution in terms of preventing damp issues inside your property. However, it is critical to make sure that any existing damp problems are diagnosed first, so that you can take the right course of action. 

Understanding What Damp Proof Membrane Actually Is

A damp proof wall membrane is pretty much a plastic sheet. Various materials are utilised depending on the intended application, the finish that is needed on the wall, and the extent of the dampness. Therefore, it is imperative to get in touch with experts to determine what sort of membrane is going to be the most appropriate for you to use. 

How thick the damp proof membrane is, also matters. 

Typically, the thickness will range anywhere from 0.5 mm to 1 mm, with stud sizes ranging from 1 mm to 8 mm. A dry lining system is sometimes used with a membrane, as a finish. 

There are others that have welded mesh, which enables there to be plastering and rendering after application. 

The air gap or the cavity that is generated by the damp proofing membrane will generate approximately 10 litres of space between the wall and the membrane. 

Damp proof membranes have a long life expectancy, usually lasting for over three decades, and they are also very flexible and strong too.

Over time, they will compensate for any structural action, providing peace of mind and longevity. 

The membrane acts as a physical barrier between the new finish and the existing damp wall. 

It will also stop there from being any moisture and vapour, along with contaminants and salts, from impacting the wall’s internal finish. They will considerably extend the life of the new internal finish. 

The Main Uses For Damp Proof Membranes 

Damp proof membranes are best suited for properties that have just had the insertion of a new damp proof course. 

In pretty much every situation involving damp, apart from where there has been structural damage, remedial treatment will be enough. 

A good example of this is a new DPC. Nevertheless, surfaces such as walls can start to deteriorate because of the dampness. This is where it makes sense to invest in a damp proof membrane for your walls, as it can be critical in terms of protecting the deteriorating surface. 

What Are Some Of The Qualities You Should Look Out For When Looking For Damp Proof Membrane For Walls?

There are a lot of different qualities that you should be looking out for when seeking damp proof membrane for walls. This includes the following:

  • Will the damp-proof membrane be suitable for your application? 

You need to make sure that the damp proof membrane will work effectively in your home. 

  • How easy is the membrane to handle? 
  • What sort of packaging does it come in?
  • Does the product comply with the local building regulations?
  • How long has the membrane been manufactured to last?
  • What levels of water vapour resistance does the product provide?
  • Will the damp proof membrane join and seal with ease?
  • How economical is the membrane? 
  • Is it waste-free? 
  • What sort of strength, stability, and cohesion does the membrane provide? 

These are just some of the questions that you should ask yourself when looking for the best damp proof membrane for walls. 


We hope that this has given you a better understanding of the importance of damp proof membranes and the important role they play, as well as some of the different qualities that you should be looking out for when making a purchase like this.    

If you would like help and support in purchasing a damp proof membrane for your project, please feel free to send an email to our knowledgeable staff here at Tradestore at  sales@tradestoreonline.co.uk