As all garage owners know, maintaining and limiting dampness on its internal walls can be an ongoing battle. This can happen for a variety of reasons and if the dampness is persistent, it should be treated before the damage worsens. While it’s not always a necessity to waterproof your garage, you definitely want the space to be dry if you’re storing our belongings in there. So, if your garage is being affected by dampness, it might be time to think about waterproofing the area.

Different methods

Identify the source of water damage: for example, if it’s from a neighbour’s construction works or perhaps a nearby leak. Although you can redirect the water,, rest assured: there is an easier way. One of the most effective and cheapest ways of preventing dampness and waterproofing your garage is through tanking slurry, which halts the entry of water into a building by using a specific type of powder.

Preparing the area

After removing all your items and garage racking from the inside, you’ll be able to inspect where the damage is in your garage. You’ll need to repair any holes or cracks before you start waterproofing, and you’ll also want to clean off any plaster, paint and dust so the bare brickwork is clean and exposed.

Using tanking slurry

The majority of tanking slurries come in a powder form, which needs to be mixed together with clean water and applied quickly before it becomes unusable. Don’t forget to protect your skin and face as this mixture can be toxic. As the tanking agents are designed for damp surfaces, you’ll need to wet the walls using clean water before applying the mixture.

Your first coat of tanking slurry should be applied at least one metre up the wall and can take up to 24 hours to dry, so don’t apply the second coat before this point. When the applications are completely dry, you can start to think about the design of your space. If you’re unsure about storage, check out companies such as to give you ideas and inspiration.

Before you start this sort of work, check to see if the the building material of your garage is suitable for the process you’re using on your walls as this in some cases, this method might not be advisable.