A In the unlikely event of the wrap or sleeve becoming damaged, the bitumen provides a secondary sealant that is only damaged by actual cutting of the wood. In the worst case, independent tests indicate a very substantial increase in post life - even with 25% of the wrap cut away. A No, because posts in concrete are initially attacked by chemicals resulting from curing concrete, substantially decreasing resistance to decay. In addition, free entry of ground water and summertime post shrinkage provide the perfect conditions for decaying organisms to enter and thrive, thus resulting in premature post failure. A The life span of the above-ground timber section of the post will be the limiting factor. AYes, the exception is that creosote will cause the bitumen to be softer at room temperature. A The wrap keeps moisture levels stable and limits lumber from splitting and checking into the wrapped zone to approximately 2", at which point moisture levels are generally below the level where decay occurs. A The wrap exhibits elastic properties and can easily cope with post shrinkage. A No, the polyethylene is non-toxic and bitumen is classified as a safe substance. A Yes, providing the ground is not excessively stony. A Yes, the only stipulation is the use of creosote or solvent-based treatments, which will cause short term softening of the bitumen at the top of the wrap.