01
Check the business and surveyor
- Business identity & trading history
- Surveyor & diagnostic competence
DAMP PROOFING GUIDE
How to check a damp proofing businessbefore you hire.
Before paying for damp treatment, check both the business and the evidence supporting its diagnosis, proposed remedy and guarantee.
Check a damp proofing businessAt a glance
For damp-proofing work, pay particular attention to:
02
Establish the cause first
- Diagnosis & supporting evidence
- Other possible causes considered
03
Connect remedy to cause
- Treatment proposal, scope & reinstatement
04
Clarify cover and outcomes
- Insurance & guarantee
- Previous work & outcome evidence
What to verify
Check the business and the diagnosis.
Open any area to see the detailed checks, questions to ask and what good looks like.
Practical conversations
Questions worth asking
Resolve the responsibilities, assumptions and practical details that matter before work begins.
What exactly is causing the damp?
Resolve this point before work begins.
What evidence supports that diagnosis?
Resolve this point before work begins.
What other possible causes have you considered?
Resolve this point before work begins.
Why is this treatment appropriate for that cause?
Resolve this point before work begins.
Which areas and reinstatement work are included?
Resolve this point before work begins.
How will changes be approved?
Resolve this point before work begins.
Look for a coherent pattern
Evidence that supports confidence
Look for several consistent signals rather than relying on any one claim or profile.
- Consistent business and surveyor identity
- Diagnosis linked to building evidence
- Alternatives considered
- Remedy matched to cause
Resolve uncertainty
Things worth investigating
Not automatic failures — prompts to look more closely.
- Treatment before the cause is established
- Diagnosis based on limited evidence
- Large scope with little rationale
- Guarantee conditions or backing unclear
Protect the project
Before you agree the work
Turn the diagnosis and proposal into a clear agreement.
Clarify diagnosis and supporting evidence before work begins.
Clarify treatment rationale and scope before work begins.
Clarify reinstatement and variations before work begins.
Clarify guarantee provider and terms before work begins.
Useful answers
Damp Proofing Business hiring FAQs
Straightforward answers to common questions about hiring a damp proofing business.
Does damp always require damp-proofing treatment?
No. Damp symptoms can have different causes, and the appropriate response depends on the diagnosis. Understand the moisture source and evidence before assessing any proposed remedy.
What should a damp survey explain?
It should explain the suspected cause, observations and measurements supporting it, other relevant causes considered, and why the proposed remedy fits the building and problem.
What should I ask about a damp-proofing guarantee?
Ask who provides and backs it, how long it lasts, whether it transfers, what it covers, which conditions apply and what could invalidate a claim.
How can I tell whether the diagnosis considered other causes?
Look for discussion of leaks, penetration, condensation, ventilation, drainage, roofing, rainwater goods and external ground levels where relevant to the property.
Check before you commit
Ready to check this damp proofing business?
Check the damp proofing business's details and get a clearer view of the evidence before you commit.