Waterproof Fabric

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Waterproof means sealed, not just treated. Everything here has a bonded film or a silicone coating that water can't pass through, which is what you want for dry bags, pack liners, tarps, and shelters where a soaking is a failure rather than an inconvenience. Worth knowing: the fabric is only half the job. Needle holes leak, so any seam that has to stay dry needs taping or seam sealer , and openings need a roll-top or a waterproof zipper . Sold by the half yard and cut continuously, shipped across Canada and worldwide. If your build only needs to shed rain rather than stay sealed, see water-resistant fabric .