The combination of Innercoat® hot-applied wax and Guard-WrapTM outerwrap is used to prevent corrosion of underground metal structures. Innercoat hot-applied wax is a microcrystalline wax blend that has been successfully used as a pipe coating for over 50 years. Innercoat hot wax coating is ideally suited for the job of protecting against corrosion. It has first-rate waterproofing characteristics because of its low moisture absorption and low rate of moisture transmission. Also, it is an exceptional dielectric barrier with high electrical resistance. When heated to a liquid for application to the pipesurface, Innercoat has an oil-like consistency that penetrates the pores of the metal, thoroughly wetting the surface. Even after hardening, it continues to be pliable or “live,” allowing the wax coating to “flex” with the pipe as it moves due to underground stress and
temperature variations. It is inert and will not change in character or composition over time, as well as being resistant to chemicals and bacteria commonly found in soils. Innercoat is applied hot, but quickly cools and hardens and can be backfilled immediately after application of Guard-Wrap outerwrap.
Guard-Wrap outerwrap is composed of a plastic mat and film, saturated with microcrystalline wax that is used to provide additional mechanical protection against backfill stress and impact, while also providing an additional dielectric barrier. Because of its conformability to irregular shapes, it is an excellent wrapper for fittings as well as straight pipe. Guard-Wrap outerwrap is composed of inert materials that will not deteriorate underground, and is resistant to chemicals and bacteria commonly found in soils.
Innercoat hot-applied wax and Guard-Wrap outerwrap in combination are outstanding anticorrosion materials for new service installations, field patching, weld seam cutbacks and pipeline reconditioning.