TuffStuff® Re-inforcement Matting is laid onto a roof deck and covered with base coat to create a fully waterproof seal. CSM Tissue Bandage should be laid first to over all areas where roof trims meet the deck. Re-inforcement Matting should be laid onto a dry surface and installers should lay the first piece at the lowest point of the roof. Each additional piece should overlap the piece previously laid by 50mm. Once all matting is down base coat should be applied. Do not attempt to lay reinforcement matting and cover with base coat in wet conditions. The process must be only carried out in dry conditions.