Woodworm Treatment for Roof Timbers in East Yorkshire

Old holes are dark and dusty inside; fresh ones are clean and pale with fine, light-coloured frass around them. New frass appearing after you have wiped a surface, or beetles emerging between May and October, means it is active. Old, inactive holes in a dry roof usually need no treatment at all, and we will tell you so.

Rarely. The common furniture beetle bores slowly and mostly in the outer sapwood, so most infestations weaken timber very little. Real structural damage comes from infestations left untreated for years in damp timber, or from house longhorn and deathwatch beetle, both much less common in ordinary East Yorkshire homes. We probe every affected timber and replace anything that has lost strength.

A water-based insecticidal timber treatment, usually permethrin-based, applied to the surface of the affected timbers; it kills larvae and emerging adults as they pass through the treated layer. The loft must be left empty for the re-entry time on the product label, normally a matter of hours, and we tell you exactly how long before you book.

Because the beetle needs damp timber. Roof timbers only become a target when a leak, failed flashing or condensation has raised their moisture content, and treating the beetle without curing the damp invites it back. We can do both in one visit, and if the roof is being re-covered anyway the rafters are already exposed.

Lenders and surveyors usually want evidence that flagged woodworm has been dealt with. You receive a written report with photographs of the inspection, the treatment and any timber replaced; keep it with your house documents.

It depends on how much timber needs treating and whether any needs replacing — a treatment-only job in a terrace loft is a very different job from re-timbering part of a roof. We quote fixed in writing after inspecting the loft, and the inspection is free when you own the property.