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Most common borers found in sound timber in Sydney are ANOBIUM BORER and
LYCTUS BORER.
Anobium Borer (Furniture Beetle) – Life cycle of 1-3 years. Commonly
found in Baltic pine floors, cupboards and staircases. Anobium Borer does not
attack hardwood timbers. Evidence of Anobium Borers is usually found when
floorboards are sanded back exposing squiggly lines. This Borer is very slow
acting and usually they have been there for many years. Over time they make the
timber/s very brittle. Structurally, most houses are made of hardwood timbers so
damage is limited.
Treatment of the affected timbers is limited depending on the
situation. Most ground floor flooring timbers can be treated by applying a
registered pesticide to the underside of all affected and susceptible timbers,
once a year for 3 years. This will interrupt and kill the life cycle of the
Borer. With furniture, staircases and timbers affected on multiple storey
dwellings, replacement of affected timbers is the only option.
To find out if your Borer damage is active, draw a circle around all
entry/exit holes found on or under the timbers affected and check at 3 monthly
intervals. If there are no more holes appearing they are presumed inactive. If
more holes appear it is presumed active. By reducing dampness and improving
cross flow ventilation within your subfloor you can reduce ideal breeding spots
for this Borer.
Lyctus Borer – Damage is usually found in subfloor bearers and
joists, roofing rafters and tile battens. Minimal amount of damage are usually
found to timbers involved as Lyctus Borers only attack the sapwood which by law
only consists of a maximum 25% of any structural timber. The other 75% of the
effected piece is heartwood; it remains structurally sound and is not considered
necessary to treat. If the timbers have been milled over 5 years prior then the
borer is deemed to be deceased. Book you local Pest Control professionals now |