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.