Woodworm Treatment In Canterbury
Background To Case Study
Our South East team were recently called upon to inspect a windmill where the owner had a suspicion of a woodworm infestation. Our instructions from the concerned windmill owner were to inspect all accessible timbers as well as providing any recommendations regarding treatments and structural repairs.
Upon his arrival, our surveyor also spotted that the access stairway had an infection of wet rot. As these timbers were external, they had been in direct contact with the ground and the elements, therefore, subject to the typical UK weather conditions – lashings of rain!
The timber post supporting the structure was inspected from below. From our inspection, it was evident that both old and inactive infestations were scattered across the timber beams. The timber, however, had good external decoration, and therefore, would not generally be subject to a woodworm re-infestation.
Following our inspection of the internal timbers, infestation by Common Furniture Beetle was observed to the joists supporting the upper level. This appeared to be mostly inactive; however, re-infestation could reoccur if this area was left untreated.
Inspection of the large dimensional spanning timber beam revealed an infestation by Death Watch Beetle, with fresh bore dust indicating recent larval activity. This appeared to be deep-rooted within the shakes of the beam.
We recommended that our technicians were to clean down and prepare timbers as necessary for treatment. Our technicians would then apply insecticide and fungicidal spray to the timbers, in doing this the spray would absorb into the wood for a period of about an hour and exterminate any eggs or woodworm near the surface of the timber.
To assure our customers that the work had been carried out correctly, our technicians advised that in the treatment of timbers,it may be possible that a few deep seated larvae would escape the immediate effect of the woodworm treatment as a result of being below the limit of chemical penetration. These larvae could subsequently emerge as adult beetles in three years following the treatment. In the case of Death Watch Beetle, the period of emergence may be even longer due to their long woodworm life cycle. Should this happen, the beetles will die upon emergence of the timber but this may give the impression that re-infestation had reoccurred.
Arranging a Woodworm Survey
Do you have problems with woodworm? If so, contact Timberwise to arrange a woodworm survey. Call your local office or complete the survey request form. For more information about woodworm and how it can be treated then check out our woodworm information pages on this website.