Timber Treatment Cost Estimator
Woodworm, wet rot or dry rot — select the problem and its extent for an instant indicative range, built from real North London treatment pricing.
How much does timber treatment cost? It depends on the organism: active woodworm treatment runs £400–£1,200 for typical loft or floor scopes; wet rot £150–£2,500 (moisture fix plus local timber replacement); dry rot £1,000–£3,000 for localised early outbreaks and £3,000–£10,000+ once established, driven by exposure margins and reinstatement. Historic inactive woodworm costs nothing — it needs no treatment. Estimate below; a £280–£450 damp and timber survey confirms species, activity and any structural involvement before real money moves.
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Select the problem and how far it has spread. The estimate updates instantly.
Related services and guides
Timber Treatment (all services)
The service this tool points toward — diagnosis-first, independent qualified providers.
View the serviceDry Rot Treatment
The service this tool points toward — diagnosis-first, independent qualified providers.
View the serviceDry Rot: Identification, Causes and Treatment
The in-depth guide behind this tool's logic.
Read the guideTimber Treatment Cost Estimator FAQs
Because inactive infestation genuinely needs nothing — the beetles are long gone and the holes are cosmetic. Paying to treat dead holes is the commonest waste in timber work. Confirm inactivity (no fresh frass through a spring–summer flight season) and save the money.
Mobility: wet rot stays where moisture is; dry rot travels through masonry to attack dry timber elsewhere, demanding removal margins, masonry sterilisation and monitoring. Diagnosis between them changes the budget tenfold — which is what the survey is for.
Treatment scopes, yes; heavy structural reinstatement (sistered joists, rebuilt bearings, replaced sections), no — that's priced from what exposure reveals. Springy floors or soft probing warrant assessment before estimating.
No — the tool runs entirely in your browser.
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