Tecnatorch SBS capsheets are high performance torch-on SBS elastomeric membranes with Grooves technology developed for use in high performance built-up systems on flat, pitched or curved roofs.FeaturesUnique patented grooves system.30% faster application than traditional torch-on membranes.Technically advanced low heat-reactive bitumen.BBA Tested and Approved - Cert No. 07/4409.Lap security gives maximum resistance to wind uplift.Polyester reinforced.15 year guarantee.