Cu-Lam Barrier Wraps
Cu-Lam barrier wrap is a copper foil polyethylene laminate which prevents direct soil contact with the pole. The Cu-Lam barrier keeps the preservative from migrating into the surrounding soil. The preservative stays in the wood longer, by inhibiting the natural depletion process of the preservatives. Cu-Lam barriers are designed to deter and repel wood-destroying fungi and termites. Install Cu-Lam barriers in environmentally sensitive areas and in regions where subterranean termites are active.
Independent tests have proven that the use of one-piece barrier wraps can significantly reduce the occurrence of decay and insect attack on treated wood structures when the ground contact portion of the wooden member is protected from soil contact by the barrier. Preservative treated stakes wrapped with a barrier in a Hilo, Hawaii field trial have out-performed un-wrapped stakes 2 to 1. Basidiomycota vector-function is suppressed by impermeable membrane barriers; preventing these decay fungi from efficiently translocating soil-source inorganic nutrients.
Barrier wraps are impermeable membranes that are placed over the butt end of wood poles just prior to installation. Barrier wraps offer additional protection to treated wood from decay, insect attack, and preservative strength loss over time. They also protect the surrounding environment from chemical leaching.
Copper Care Wood Preservatives' Cu-Lam Fire Barriers protects utility poles during grass and brush fires. The copper foils melting point of almost 2000° F creates a durable oxygen barrier inhibiting ignition and preventing after-glow.