Cost: timber assessment and roof-frame treatment
Separate cause investigation, identification, access, selected work and possible timber repair. Floor area is not necessarily treated surface. Define quantities, any necessary product and monitoring; assume neither blanket preventive treatment nor uniform guarantee.
Editorial update on 18 September 2026
Separate investigation
Clarify visit, possible sampling, analysis, report and structural assessment. Ask about payment without treatment and later credit.
Define accessible scope
List openings, lining removal, protection, actual surfaces or members, waste and reinstatement. Injection is not automatically necessary for every large member.
Compare monitoring and exclusions
Describe follow-up, result criteria, guarantee limits and return cost. Separate moisture correction, biological treatment and timber replacement. Confirm tax and possible aid individually.
The three budget levels
Where your money goes
- DiagnosisOn quotationFindings, analysis and report.
- PreparationOn quotationAccess, protection and removal.
- InterventionOn quotationJustified method and areas.
- Follow-upOn quotationChecks and separate repair.
What makes the price vary
Cause
Organism, activity and moisture.
Access
Exposed or hidden timber.
Condition
Possible structural assessment.
Procedure
Protection, product and follow-up.
Indicative scenarios
No grant is deducted from the budget shown here. If a quote mentions support, request the exact scheme and confirmation of your eligibility before including it in financing.
Frequently asked questions
Do holes prove active attack?
Not alone. Assess signs, change and further checks.
Always treat during renovation?
Justify need by timber, condition and exposure; an open roof alone does not require a product.
Does treatment restore strength?
Do not assume so. Assess capacity and repair needs separately.
Does every guarantee last a decade?
No uniform period is stated here. Ask about scope, conditions and contractual remedies.
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