Abstract: A rectangular foldable blank along the length of which parallel lines of adhesive tape are applied near each edge and covered with removable protective film, and which parallel slit score lines run near each long edge just inside the tape line, and a regular score line bisecting the length of the blank, and perforations dissecting the width of the blank at select intervals. Also, to the seam sealer cover formed from the blank producing a tent like structure with continuous parallel adhesive tab portions running the length of the structure at both edges. And, to the assembly formed when one or more of the aforementioned seam sealer covers are installed by adhering the adhesive tab portions to a floor covering surface in such a method as to cover and protect the entire length of a floor covering seam and line of seam sealer from debris contamination and foot traffic within the hollow formed by the assembly and floor covering surface.