TuffStuff® 75mm CSM Bandage creates a waterproof seal between trims and the roof deck. CSM Bandage must be applied before re-inforcement matting is laid. It is essential that the CSM Bandage is laid covering any exposed nail heads that are holding trims in place. The bandage should be applied onto a wet layer of base coat. Once in place additional base coat should be applied over the top, turning the bandage transparent. A paddle roller should be used to distribute the base coat evenly through the bandage.