How to Waterproof the inside of a basement

Waterproofing and tanking internal walls

HOW TO Damp Proof INTERNAL Walls

In the above video, Stuart McGinlay, one of our experienced structural waterproofing experts, shows us an example of how to internally waterproof a basement.

The basement in question was a classic example of a wet, under-pavement basement. Water was leaking through the wall-joints resulting in a space that was damp and unusable. The team at Wise Basement Systems installed a wall waterproofing system and a floor waterproofing system which directed the water to an outside drain via patented Water Guard drainage.

After the job, Stuart talks to the client to see what she thinks about the completed project.

How to waterproof an Internal Wall – steps required

Step 1:

The first stage of the process is to organise a basement & cellar survey. During the survey, the surveyor will find out where any water ingress is occurring and what measures are required to make the space dry. The surveyor will also find the lowest point of the basement so they know where to direct any water.

Step 2:

The Wise Basement Systems technicians will install a membrane system. This will usually be applied to the walls and roof of the basement. The membrane will direct water into the basement drainage system.

There may need to be some alterations to current fixtures and fittings in the basement to facilitate the membrane and drainage systems. For example, in the video above it was necessary to remove the door during this process so that no water could enter the basement this way. The door was then reinstalled and is now water tight.

Step 3:

The next step is to install a drainage system which will direct any water safely away from the basement to outside the property (if possible) or to a sump pump.

Step 4:

Its now time to consider the right wall waterproofing system.  The decision here will really depend on what you want to do with your finished basement. Systems for damp proofing your walls will not only help to keep your walls dry, but they also help to give the basement a finished look.

Step 5:

Finally, if your basement floor is cold, hard, or damp; you may want to consider waterproof flooring. There are many different solutions to keeping the floor dry. It is really a case of considering what you want to do with your new space and then selecting the appropriate solution. 

More information on how to waterproof a basement

For more information on waterproofing a basement, and what to do with it once you have a clean and dry space to enjoy, click on the links below:

Basement waterproofing

Basement waterproofing issues are a common property problem. If you are experiencing this issue then there are a number of options available to you.

Basement waterproofing

Basement conversion ideas

Are you thinking of a basement conversion but unsure what you could use it for? A home cinema? A private Gym? Take a look at our basement conversion ideas.

Basement conversion ideas


Speak to an expert on how to waterproof a basement

To speak to a qualified specialist about waterproofing your basement call 0808 256 4538 or click to find your local branch details.

Alternatively, for a quick response, contact our specialist team online using our online contact form.

Contact Wise Basement Systems