Case Study
Rising Damp Or Condensation?
The Problem
We were asked to carry out a Second Opinion Damp Survey at a 1930's property in Wolverhampton after the homeowner had previously been advised that rising damp was affecting the ground floor.
The property experienced low-level damp marks and mould during the colder winter months, while the affected walls appeared considerably drier during warmer periods. The previous report had recommended remedial damp-proofing works, which included injecting a new damp proof course.
Our Investigation
Rather than assuming the low-level moisture was rising damp, we looked at the wider picture.
We assessed moisture patterns throughout the affected walls. internal humidity and dew point, wall surface temperatures and thermal imaging, as well as suspended timer floor and surrounding construction.
The pattern of moisture, mould growth and it's strong seasonal nature raised questions over whether rising damp was actually responsible.
What We Found
Our investigation found insufficient evidence to confidently diagnose rising damp.
Instead, the evidence pointed towards seasonal condensation, with elevated moisture conditions beneath the suspended timber floor likely contributing to the problem.
This was particularly important because low-level moisture readings alone can be misleading. Electrical moisture meters can respond to moisture and salts within plaster and should not be used in isolation to diagnose rising damp.
Why a Second Opinion Matters
Had the original diagnosis simply been accepted, the homeowner could have proceeded with costly damp-proofing and replastering works without addressing the conditions actually contributing to the problem.
This case demonstrates why identifying the true cause of damp - rather than simply treating where it appears - is so important.
Have You Been Diagnosed With Rising Damp?
If you've been advised that your property requires a new damp-proof course, tanking or extensive replastering, an independent second opinion could help you make an informed decision and save you thousands on costly remedial works.
Damp Trace investigates the evidence first - because not every damp wall is rising damp.