Polyethylene barrier wraps have been used to slow the depletion and out-migration of oil-borne wood preservatives from
utility poles into the soil substrate where they are embedded. Laboratory research at the University of Hawaii has demonstrated
copper foil laminate to polyethylene is an effective barrier to termites. Untreated posts wrapped in copper foil/polyethylene
laminate barrier were placed in a field study at the New Orleans Lower Coast Algiers test site in August 2013. Some of the
copper foil/polyethylene laminate was manufactured into a butyl-mastic repair tape. Feeder stakes running the entire length of
the posts were placed directly against the tape seams to facilitate termite pressure on the butyl-mastic adhesive. After two
years, extensive activity from native and Formosan subterranean termites was present but there was no observation of any
termite grazing or damage to either the repair tape or the barrier wraps.
New Orleans Mosquito, Termite and Rodent Control Board
New Orleans, Louisiana
Copper Care Wood Preservatives, Inc.