Frequently Asked Questions
How do I know if I have rising damp?
Flaking paint, bubbling plaster, crumbling bricks, stonework and mortar are the indications of rising damp. As long as there is no soil or rubbish higher on the other side of the wall then it is rising damp. All of our applicators have moisture meters and are able to give you an accurate assessment.
What is the difference between rising damp and rising salt damp (also called salt damp) ?
Rising damp is caused by the same natural capillary action by which plants absorb moisture into their stems from the soil beneath. It becomes rising salt damp when mineral salts are present in the soil and are drawn up with the moisture.
What is the difference between rising damp, lateral damp and penetrating damp?
Rising damp is generally visible from ground level to varying heights up the wall where clearly, a break in the damp course has occurred. Lateral damp is where moisture is allowed to enter the structure in a horizontal direction. Gravity then causes the downwards movement of the damp into other areas. Penetrating damp can create isolated patches of dampness that increase in size after heavy periods of rain.
Will DRYZONE treat lateral damp?
No, DRYZONE is designed specifically to prevent Rising Damp/Salt Damp.
Will DRYZONE get rid of the salts that are already in the wall?
No system on the market can get rid of the salts and or any residual moisture already in the wall above where you have introduced the new Damp Proof Course. The residual moisture will dry out over a period of time depending on how damp the walls are and weather conditions. However, the residual salts will continue to attract airborne moisture so it is imperative to introduce a salt retarder/moisture barrier into the new render if and when replastering.
What is the period suggested between treatment for Rising Damp on a brick wall and having Re-Pointing / Tuck Pointing / Rendering performed?
This can depend on several factors. Generally, the answer is 2 – 3 months but Brett will discuss with you the time required based on his inspection of your home.
Will DRYZONE get rid of the salts that are already in the wall?
No system on the market can get rid of the salts and or any residual moisture already in the wall above where you have introduced the new Damp Proof Course. The residual moisture will dry out over a period of time depending on how damp the walls are and weather conditions. However, the residual salts will continue to attract airborne moisture so it is imperative to introduce a salt retarder/moisture barrier into the new render if and when replastering.