top of page

What is rising damp?

Rising damp is the capillary action of water rising and flowing along narrow spaces, countering to the forces of gravity. Bricks and mortar can be porous and contain many fine capillaries, through which water can rise. The groundwater that rises up through the wall often contains salts, minerals and nitrates that can contaminate plaster and cause lasting decorative spoilage.

We use water-based silicone cream that spreads through, and bonds with, sand/cement mortar. Any continuous sand/cement mortar line that has been properly treated with becomes a damp-proof course. Due to the fact that we use high strength creams, such as Dryzone, they deliver 5 times more active ingredient to a wall, over a wider area than other low strength competitors, making our damp proof course longer lasting and more effective.

We drill holes in to the first continuous mortar course that is at least 150mm above ground level. On a standard brick wall, these holes are drilled 90% into the width of the wall at 120mm intervals.

The Dryzone cream is introduced into the pre-drilled holes. This is usually done using a professional applicator gun.. Once the cream has been successfully applied, we move on to the next stage of the treatment.

We then install a damp proof membrane. This barrier treatment is a quick and effective method which provides a complete barrier from any damp left in the wall. We can then plasterboard the walls and plaster skim. 

Using this method means that the plaster can dry within a couple of days, ready for decoration.

At Dry Living Solutions we take pride in our ability to diagnose condensation, rising damp, water ingress and water penetration. 

We base our diagnosing technique on eliminating different types of damp before we then carry out a salt test.

 

Salt tests do cost to carry out and we recommend a salt test when the damp is not a forgone conclusion. The salt tests determine whether certain salts, nitrates and chlorides are left behind when soil water evaporates (rising damp) on the surface of ground floor walls.

Rising damp can be caused by a missing or failed DPC but it may be due to other defects including bridging of a cavity, plumbing leaks, rainwater penetration and other factors including condensation.

IMG_3306.jpg
984a0f5b-d6cd-4460-b343-682702376004.JPG
7446a71f-17c0-4a5a-8754-62b2ed4e78a2.JPG

Rising damp solutions

Damp proof

course

Injection

Cream

IMG_3358.JPG
Dryzone 12 Tubes DPC Injection Cream 310
IMG_3359.JPG
Damp-proofing injection cream

 

Dryzone damp-proofing cream. Designed for use in walls, it helps to prevent rising damp by creating a strong waterproof barrier.

Diagnosing rising damp

bottom of page