Heat Fused Torch-On consists of modified bitumen. As long as it is installed by a competent person, this waterproofing system is tried and tested system that should come with a 10 year guarantee.
Heat fused waterproofing systems should be installed in the direction of the fall towards the outlets. This system is applied with a propane gas torch. Heat fussed waterproofing systems must be correctly counter flashed in order to make sure water does not seep underneath the waterproofing.
This waterproofing system needs to be maintained every 4 years and special attention should be paid to the laps, outlets and counter flashings.
Remember it is important that any waterproofing system be done and applied correctly.