Rising damp guide
Can Render Bridge a Damp-Proof Course?
Render that continues past the damp-proof course and into paving or soil can provide moisture with a path around the barrier.
What a useful inspection looks for
Find the DPC line if possible and see where the render finishes in relation to it. Cracking, hollow areas and persistent splashback also matter.
Why appearance can be deceptive
A rendered wall may look perfectly neat while its lower edge is buried behind paving or soil. The problem is the hidden junction, not necessarily the visible face.
Correct the bridge, not just the symptom
Depending on the construction, the lower render may need altering so moisture cannot bypass the DPC. Any change should still leave the wall weatherproof.
Internal plaster may need separate work
Even after the external bridge is corrected, damaged or salt-contaminated plaster inside can remain unsightly and may need repair.
Want somebody local to look at it?
If you would rather have the damp investigated in person, you can use our help page to describe the problem and decide what sort of specialist you need.