Newseal Ltd

Woodworm problem no problem



We provide specialist damp proofing treatments in Truro and throughout Cornwall along with specialist re-plastering techniques to coincide with all chemical damp proof course installations. The treatment carries our own 20 year guarantee which can also be complemented with an independent 10 year insurance guarantee issued by Guarantee Protection Insurance Ltd GPI

Whether you require a specialist timber and damp report in Cornwall or a woodworm specialist in Truro, Perranporth or Penzance or dry rot or wet rot treatments in St Agnes, Padstow, Newquay, St Austell, Bodmin, Wadebridge, Falmouth, Helston, Launceston or Looe we can help please contact us for a hassle free no obligation quotation.

NEWSEAL are approved contractors for Permagard products a leading manufacturer of chemicals for the remedial treatments industry. 


Common Furniture Beetle(anobium punctatum), as the name suggests, is the most common insect that attacks softwood and European hardwood. Larvae hatch out from the eggs and burrow into the timber feeding on the sapwood, progressively weakening it, for up to four years; when fully grown the larvae are approx. 3mm long. Adult beetles emerge from the timber at the completion of the pupa stage through 1-2mm diameter flight holes.

Treatment of this beetle is by means of a water-based micro emulsion insecticide containing permethrin is applied under a course spray treatment to all accessible, undecorated timber surfaces


Timber decay arises as a result of severe dampness, and is potentially the most destructive agent within any building. Decay by wet rot fungi such as the cellar fungus, Coniophora Puteana, tends to remain localised to the source of dampness and is restricted to the wood itself. If left unchecked it frequently causes joist ends and other bearing timbers to collapse, for example, where the joist ends are embedded in damp masonry.

TRUE DRY ROT (serpulus lacrymans)

Infection by the true dry rot fungus (serpula lacrymans), can be far more destructive within a building than the wet rots, due to its ability to grow through and across inert substrates such as brickwork and plaster. This allows the fungus to contaminate other timbers within the building so spreading the extent of decay and destruction. Unfortunately dry rot is rather 'secretive' in its activity, preferring stagnant, humid conditions. Hence, when it is discovered the damage it has caused is frequently very extensive.