Transparent UK pricing
Woodworm Treatment Cost
What woodworm treatment really costs in the UK — by garage, loft, floor and whole house — and the factors that move the price. Every job starts with a free survey and a fixed written quote.
- Garage from £200 + VAT, loft from £400 + VAT
- Whole-house treatment typically £500 – £3,000
- Free survey, fixed quote and a 30-year guarantee
Get your free quote
Tell us what you've noticed and where. A local woodworm surveyor will call you back to arrange a free, no-obligation survey.
Indicative prices
Woodworm treatment cost by area
The figures below are realistic UK guide prices for professional, guaranteed treatment. They are a starting point — your survey produces a fixed quote tailored to your property.
| Area treated | Typical cost | What it depends on |
|---|---|---|
| Single garage or outbuilding | From £200 + VAT | A self-contained, easily accessed space with a limited run of timber to spray. |
| Roof space / loft | From £400 + VAT | Treating rafters, purlins and joists in a typical domestic loft, including access and protection. |
| Suspended timber flooring | £200 – £600 + VAT | Depends on the floor area, whether boards must be lifted and how easily joists can be reached. |
| Whole house | Typically £500 – £3,000 | Varies widely with property size, number of affected areas, severity and any timber repair needed. |
Guide prices for professional treatment in 2026. Room and roof figures are quoted plus VAT; whole-house figures are typical totals. Your written quote confirms the exact price and VAT position before any work begins.
Does location change the price?
Labour rates vary across the country, so the same job can cost a little more in London and the South East than in much of the North or Scotland. The bigger swing, though, is always the property itself — its size, the timber affected and how easily the surveyor can reach it. A small, accessible loft in an expensive area still costs far less than a whole house anywhere.
Are there ongoing costs?
No. Professional woodworm treatment is a one-off job, not a contract with recurring fees. Once the timber is treated and your certificate issued, the 30-year guarantee covers the treated areas for decades. The only sensible follow-up cost is keeping any underlying damp in check, because dry, well-ventilated timber is what stops a fresh infestation taking hold.
Behind the numbers
What drives the price of woodworm treatment
Two homes with woodworm can be quoted very differently. Six factors explain almost all of the variation.
Area treated
The biggest single factor. A garage or a single suspect floor costs far less than a whole house. Cost scales with the volume of timber and the surface area to be sprayed or pasted.
Access
Easily reached, exposed timber is quick and cheap to treat. Lifting fitted floors, working in a cramped loft, or moving insulation and stored items adds labour and therefore cost.
Severity
A light, early infestation needs a straightforward spray. Heavy, long-standing damage may call for boron paste, multiple visits or treatment of structural joist ends, all of which add to the price.
Species
Common furniture beetle responds to standard treatment. Death watch beetle in old oak, or rare house longhorn beetle, may need specialist methods and a more involved approach.
Timber repairs
Where beetle damage has weakened a joist, rafter or beam, treatment alone is not enough. Splicing, resin repair or replacement is priced separately and is the main reason whole-house figures reach the top of the range.
Underlying damp
Woodworm follows damp. If wet rot or a moisture problem has to be resolved first, that work is quoted alongside, because treating beetle without fixing the damp invites it back.
Correct species identification matters for cost as much as for results. Standard treatment suits the common furniture beetle behind most UK infestations, but the right diagnosis avoids both under-treating a serious problem and over-treating timber that is fine. A free woodworm survey settles this before you spend anything.
Two routes
DIY vs professional cost
On paper, DIY looks far cheaper. A shop-bought woodworm killer costs roughly £15 to £40 a bottle, and for a small, accessible, genuinely active item — a single chair, a chest of drawers — it can do the job.
The picture changes with floors, roofs and structural timber. DIY sprays often fail to penetrate deep enough to reach larvae feeding inside the wood, you cannot easily treat the underside of fitted floors or hidden joist ends, and there is no certificate or guarantee to show a buyer or lender later. A treatment that has to be redone, or a sale that stalls, quickly erases the saving.
When each makes sense
- DIY: small furniture, a confirmed-active item you can reach on all sides, where no paperwork is needed.
- Professional: floors, roof timbers, structural joists, any house sale or mortgage, and anywhere the species or extent is uncertain.
No hidden extras
What's included in the price
When you treat with us, your quoted price is a complete package, not a labour-only figure with add-ons. Every job includes the survey, the treatment, the certificate and the guarantee.
See how woodworm treatment works →- A survey to confirm the species and whether the infestation is active
- A fixed written quote — the price you are told is the price you pay
- The right treatment method for your timber and beetle
- A written treatment certificate on completion
- A 30-year guarantee on the treated timber
Get an exact figure
How to get an accurate quote
Guide prices help you budget, but only a survey produces a firm number. The process is quick, free and carries no obligation.
Tell us the basics
Your postcode, the type of property and where you have seen holes, dust or beetles. Photos help, but are not essential.
Free survey
A local surveyor inspects the timber, identifies the species and confirms whether the infestation is active — at no cost to most homeowners.
Fixed written quote
You receive a clear, itemised quote with VAT stated. There is no obligation to proceed, and the price will not change once agreed.
Beware of any firm that quotes a fixed price for whole-house treatment without seeing your home, or that pushes treatment before confirming the woodworm is active. A trustworthy quote always follows a survey. For a deeper breakdown of real-world figures by room, roof and floor, read our 2026 woodworm treatment cost guide.
Plan your next step
Woodworm Treatment
How active beetle is treated — spray, boron paste and structural repair, all guaranteed.
Learn more →Woodworm Survey
Book a free survey to confirm the species and get your fixed written quote.
Learn more →2026 Cost Guide
A full breakdown of UK woodworm prices by room, roof, floor and whole house.
Learn more →DIY vs Professional
When DIY treatment works, when it fails, and how the real costs compare.
Learn more →Frequently asked questions
How much does woodworm treatment cost in the UK?
Why is whole-house treatment so much more than a single room?
Is DIY woodworm treatment cheaper than hiring a professional?
Does the price include VAT?
Do I have to pay for the survey before I get a price?
Get rid of woodworm — for good
Book a free survey today. Fixed written quote, BPCA-trained technicians and a 30-year guarantee on treated timber.
Request your free survey
Two details to get started.