I have vinyl sheet flooring that is about 30 years old and I have two seams that had long pieces of the seam that had a wide gap in it the one seam had a 12 inch section with a 1/2 inch gap in it and another 8 inch section with a 1/4 inch gap in it my other seam had a section with a 8 inch section with a 1/4 inch gap.So I put a strip of gorilla duct tape across both seams then I put another piece on top of the piece I laid down so it has double layer going across both seams then on the 12 inch section I put two rows of overlapping duct tape on one side of the seam and two overlapping duct tape on the other side of the seam so I have 5 rows going parallel to the seam then as I put the 4 rows down I double layered all the rows.I put so many rows because the gap was a 1/2 inch that was so wide.I noticed that my sandal had a piece of sand was on the bottom of it and it put a small hole in the duct tape when I walked over it.So this is showing me the duct tape will cut easy so I put a strip of regular duct tape across both seams in the middle of the seam because it is very tough and will not get holes in it.I did this so it would have a tough outer surface on the seams I actually put two layers of regular duct tape in the middle of both seams. Both seams are waterproof because the gorilla clear duct tape has such a strong bond to the vinyl flooring.I really needed to fix the floor because bedbugs where going in those seams in the floor in nesting.I am very happy at the job the tape did if I would have done it a conventional way the seams would have still had a gap in them.
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