Fumigation & Whole-Property Treatment
Fogging and fumigation treat widespread infestations. They help where spraying every timber is not practical.
- Used for wide or repeat infestations
- Fumigation needs trained operators
- You may need to leave the building
What fumigation does
Fogging fills a roof space or room with a fine insecticide mist. Fumigation uses a gas in a sealed building. Both reach places a spray gun cannot, although they are used far less often than spray.
Fumigation is tightly controlled because the gases are dangerous. Only trained operators should carry it out. MyJobQuote lists fogging or fumigation at £500 to £1,000, depending on size.
How a fogging or fumigation job runs
The details differ by method. However, the stages follow a similar order.
- 1
Plan and seal
The team surveys the building and seals vents. Residents, pets and plants leave the building, because the products are hazardous.
- 2
Treat
The operator releases mist or gas. The building stays closed for as long as the method requires, so plan somewhere to stay.
- 3
Clear and check
The team airs the building and tests it before anyone returns. They also give written re-entry advice.
What to weigh up
Every method has trade-offs. Weigh them against your own timber, because no method suits every case.
Wide reach
The mist or gas reaches voids and hidden timber. That helps in complex roofs, while a spray gun cannot.
Fewer access problems
Boxed-in or crowded spaces are easier to treat. You avoid stripping out finishes.
Whole-building option
It can treat a whole building in one go, which suits repeat cases. However, it costs more than spray.
Limits to know
You must leave the property, and the cost is higher. Fogging may not kill deep larvae, so ask what it targets.
When this method is the right choice
Use this list to check the fit. A mismatch wastes money, since each method has limits.
- Widespread or repeat infestation across many rooms
- Complex roofs with poor access
- Cases where spray and paste have not solved the problem
Help in your area
This applies across the UK, but housing differs by city. For local detail, read about woodworm treatment in London and woodworm treatment in Manchester, because older streets hold more old timber.
Fumigation: your questions
Is fumigation common for woodworm?
No. Most homes need spray or paste only. Fumigation is kept for large or stubborn cases.
How long must I stay out?
It depends on the method and the building. The operator will give a written time and will not let you back until the air is safe.
How much does it cost?
MyJobQuote lists fogging or fumigation at £500 to £1,000, depending on size. See the cost guide for more.
Does it replace spray?
Sometimes, but often it supports spray and paste. A survey decides the mix.
Helpful next steps
Not sure which method you need?
Request a survey, because the right method depends on the beetle and the timber. A local specialist will call you to arrange a visit.