SheetBlok-Plus is a dense, limp-mass material that comes with a PSA to temporarily mount the product until the finishing layers can be assembled.< p>Just peel off the PSA backing and apply the SheetBlok Plus to the area to be covered and that's it! And while it's not meant to be a permanent mounting solution, it will easily hold your SheetBlok up until you're ready to put the finishing layers over it. SheetBlok Plus eliminates the hassles of troweled-on adhesives and significantly reduces the need for mechanical fasteners.