The kindest cut
17 September 2012Incising to improve preservative penetration is gaining popularity. Robin Meade reports
Incising to increase protection of fence posts, deck joists and garden sleepers has gained a ready market in the UK. Cutting into the surfaces to improve the penetration and retention of pressure impregnated product has been tested by the major preservative suppliers and is in use at some treatment plants and sawmillers, such as BSW Timber, Walford Timber and James Jones & Sons.
BSW Timber has partnered timber equipment engineers AV Birch to develop the Porcupine as an alternative to USsourced incising machinery, and is in dialogue with several major sawmilling companies.
The Porcupine passes sawn timber through blades giving a consistent pattern of incisions applied to each face of the product before pressure treatment. The specially designed knife system clears any build-up of debris between the blades, ensures equal depth incisions and prevents tear out of timber.
