‘Postsaver,’ a non-toxic, chemical-free, method of protecting timber to be used in ground contact, is a dual layer, physical barrier system that works by preventing decay organisms from coming into contact with timber at the critical ground-line area that is most susceptible to decay. Applied through a sophisticated proprietary heat-shrinking process, the interior layer; a bituminous coating, seals the timber, and the exterior, secondary layer; a UV-stable and extremely durable polyethylene, contracts to the contours of the timber component, whether square or round. The end result is timber with an expected service life that is at least double what would be expected with conventional timber protection methods.
‘Postsaver,’protection is currently used in numerous sectors such as fencing, playgrounds, agriculture and construction. Widely tested, it is effective against a broad spectrum of fungi and wood boring insects, including termites.
Postsaver - Basis for Long Life Posts:
- Untreated Timer in Ground Contact - 0 level of protection - Mechanism of Decay
Moisture content increases dramatically. Wood becomes soft and able to sustain soil borne decaying organisms, which decay timber. Typical time to failure is 5 years, dependent on timber type and ground conditions.
- Pressure Treated Timber in Ground Contact - 1 level of protection - Mechanisms of Decay
Again moisture content increases rapidly but preservative deters decaying organisms. Continual wetting/drying cycle at ground line section ultimately reduces durability of the timber. In addition to this, if the post is concreted in place the alkaline bi-products of concrete will again reduce the durability rating of timber.
- Pressure Treated Timer + POSTSAVER Boot in Ground Contact - 3 levels of Protection
i) Tough thermoplastic boot excludes decaying organisms and moisture necessary for decay. Prevents possible loss of preservative to the environment. Also isolates timber from alkaline bi-products of concreting - thus maintaining durability.
ii) Timber is sealed using a high performance bituminous compound. This provides a secondary barrier against decaying organisms, moisture etc. Again, prevents loss of preservative and also moisture fluctuations within the booted area, preventing any loss of durability.
iii) Conventional preservative kept in the post by boot to provide long term insurance against the onset of decay.
|
