WallProofThe reading is only the beginning.
Know what’s
behind the reading.
Understand wall scanners, moisture readings and building materials. Practical context for UK homes, workshops and the decisions in between.
Start with the task
What are you trying to understand?
Before you make
a hole in the wall.
Hidden services, wall build-ups and scanner signals. Understand what detection can tell you — and what still needs checking.
Explore wall locationA number needs
some context.
Wall readings, timber moisture and flooring records. Start with the material, the measurement mode and the question you need to answer.
Explore moisture & timberThe essentials
A better way to read the result.
Can you trust a wall scanner before drilling?
What a detector adds to the decision — and what it cannot establish.
%MC, %WME, REL and %RH: what is the difference?
Four familiar labels that answer different measurement questions.
Pin or pinless: understand the measurement first
Why two meters can disagree without either being a universal answer.
What does a high moisture reading in a wall mean?
A practical route from an unexplained number to better evidence.
Our approach
Measure carefully.
Interpret cautiously.
A green light is not a drilling guarantee. A high wall reading is not a diagnosis. We explain the conditions behind a result, with links to the evidence.
Read our editorial method ↗- Identify the materialConstruction and layers change what a tool can detect.
- Name the measurementRecord the model, mode and unit — not just a number.
- Decide what to check nextUse observations and other evidence to reduce uncertainty.
Good records start with a blank sheet.
Two free CSV templates. No invented readings or pass/fail thresholds.