Timber Treatments in Leeds, Bradford and West Yorkshire Areas

Dry Rot / Wet Rot

Being experts in damp and remedial work, we offer unrivalled timber treatments services. Fungal decay of timber by either Wet Rot or Dry Rot can occur when timbers are in prolonged contact with damp situations, especially in poorly ventilated areas such as sub floors. Dampness from plumbing leaks, defective gutters, rising dampness or high ground levels etc., can create the conditions for decay to establish and wood rotting fungi to develop.

The fungal growth from dry rot may be in the form of white strands, sheet mycelium and fruiting bodies. The white strands are able to penetrate through brickwork and mortar joints and can transport moisture to dry, poorly ventilated areas, allowing the spread of the fungus. The mycelium appears as silky white sheets, often with yellow / lilac edges. Fruiting bodies appear as fleshy, pancake like growths, laden with spores, often creating a red dust around the affected area.

Successful timber treatments of Dry Rot normally involves several key factors. Removal of the moisture source(s), establishing a dry environment, eradication of fungal growth and replacement of defective timber elements.

Dry rot (Serpula lacrymans) normally requires cutting out and disposing of defective timbers and chemical treatment to adjacent areas to eradicate fungal growth. Where masonry is affected, treatment of the brickwork may be required in the form of sterilisation and / or irrigation to the walls.

Irrigation is the term used to describe the eradication of Dry Rot from masonry and involves drilling the masonry and injecting a fungicidal preservative to the walls under pressure. Fungicidal biocide is used to sterilise the surfaces of masonry and the oversite.

Following the eradication of the fungus and removal of the moisture sources, new timbers can be introduced, ensuring isolation from masonry with physical barriers and adequate ventilation to the floor voids.

Where floor voids cannot be adequately ventilated, replacement in concrete may be required.Wet rot treatment is usually less expensive to eradicate than Dry rot, as eradication of fungal growth is much more simple and does not normally require chemical treatment.

Eradication of moisture sources, promoting a dry environment and timber replacement will still be required however.

Perma Gard’s range of available treatment for fungal decay may include specialist eradication works, partial or complete floor replacements and replastering.

Woodworm Treatments


Woodworm Infestation or Wood Boring Beetle, as it is commonly referred to, is found in many residential and commercial buildings. Damage to timbers can occur, as wood boring beetles are able to use wood as a food source.

The most common infestations are from the Common Furniture Beetle, however other species such as Death Watch Beetle, Lyctus Powder Post Beetle and House Longhorn Beetle may be found.

We do not charge to inspect the property and to provide a report / quotation.

Correct identification of insect attack is essential in ensuring effective treatment.

Cemplast preservations range of timber treatment services, includes effective measures for the control of all commonly found wood boring beetles and can be used to control existing infestations and prevent further attack.

Where woodworm treatment is required, our product range includes water based, low odour preservatives which in many instances, require properties to be vacated for only short periods of time. Full details are provided for each specific project, following a site inspection and risk assessment by our Surveyor.

The most common method used by Cemplast preservation for woodworm treatment to timber floors, involves exposing the timbers by lifting floorboards in a parallel manner to gain access to the sub floor void.

The joists, wall plates, bearers, sub floor timbers and the underside of the floorboards are then treated using Kenwood insecticidal timber preservative.

Cemplast Insecticide is specially formulated for deep penetration into the timbers, in order to ensure eradication of existing woodworm infestations and future protection of the timbers.

Treatments are completed by our own skilled operatives and most woodworm treatments are completed within one day.

Our woodworm products have been granted a one hour re-entry status, therefore treated property can be re-occupied once the timbers are dry (minimum of one hour afterwards).

For more information on our timber treatments or to arrange an inspection, please feel free to contact us and a member of our team will be glad to help!