Preservation Treatments Limited, established 1972, has many years experience providing woodworm treatment, control and repairs for residential homes and businesses in Godstone. If you are looking for help and advice and live in Godstone, Surrey, please call 0800 1422 513 to arrange a survey.

About woodworm

The generic term woodworm relates to the larval stage of many species of wood boring insects. The initial attack is made when an adult beetle lays eggs in small cracks on the timber surface. The resulting larvae that hatch will bore into the wood in search of cellulose to feed on.

The larva will create a chamber within the wood in which an adult beetle will emerge after metamorphosis. The new adult will continue to tunnel through the wood in an attempt to exit wood, creating a small visible flight hole. The adult will then seek to mate and start the whole process once more.

The tunnels and chambers that have been created in this process will lead to decay and weakening of the timbers. Here are the types of insects which cause damage.


Common furniture beetle

By far the most common of all insects that attack seasoned timber. The adult beetle lays its eggs, between 20-80, in crevices in the timber. Hatching occurs in 3-4 weeks, the grub burrowing into the timber for between 2-3 years. Normally between May and August the adult beetle emerges through the characteristic flight hole.

Adult Common Furniture Beetles can reach between 3 and 5 mm long. They can be found on and around damaged timber during late March to early August.

Death-watch beetle

Death Watch Beetle normally attacks fungally decayed hardwoods and can then spread to sound timber, being found principally in old oak beams. The name comes from the insect’s liking for these beams which are often found in churches.

Adult Death-watch Beetles can reach between 6 and 9 mm long. They can be found on or beneath timbers, from March to June, and may be heard and seen tapping their heads.

Wood boring weevil

The ideal habitat for Wood boring weevils is softwood or hardwood in damp conditions. Poorly ventilated ground floors, cellars and wood in contact with damp floors and walls are particularly at risk of infestation. This infestation can only occur in timber which has to some extent been pre-digested by a wood rotting fungi.

Adult Wood Boring Weevils can reach between 3 and 5 mm long. They can be found on or around infested wood all year round. They may migrate in large numbers into adjacent rooms, particularly in summer months.

House longhorn beetle

Originating on the continent this insect has now become endemic in certain parts of Southern England, mainly in Camberley and Walton-on-Thames. The danger in infestations by this insect lies in its relatively large size, the grub growing to almost an inch in length. As the cycle can be as long as eight years, it is not long before structural weakening occurs.

Adult House Longhorn Beetles can reach between 10 and 12 mm long. They are found on or around infested timber, from July to October.

Contact us today to arrange for a survey. We will establish which wood boring insect infestation you have, and provide suitable treatment.


0208 914 8189


01962 706188


01276 66466

Industry Recognised

Preservation Treatments are an accredited contractor with the Property Care Association (PCA), Constructionline, CHAS, Safecontractor and Trustmark. We maintain standards within the Industry that each professional body has set.

In recognition of our high standards, Preservation Treatments was proudly awarded PCA Contractor of the Year Award in 2013. Introduced in 2012, this category was designed to recognise PCA contractor members who excel throughout their normal day-to-day business. It is an achievement we are extremely proud of.


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For your protection and security all our works are covered by our company guarantees. We are also an approved contractor by Accelerant, providing an independent insurance policy that, should you chose to take it up, covers the lifetime of your guarantee.

Please see the insurance-backed guarantees section of our site for further information.