HistoryWe have provided electrically heated blankets for a wide variety of construction, highway and masonry projects. In recent years, roofing contractors, electricians and plumbers have used our product to keep working all winter long.SpecialtiesSince 1965, Thermalay heated blankets have provided heat when and where contractors need it. The winter elements don't need to stop your next concrete pour or masonry project. Put the heat right where you need it. Thermalay blankets have been proven across the northern United States, Canada and Alaska.