Silver tarps by PTM are made of heavy-duty polyethylene laminated and treated for waterproofing, rot-proofing, and UV-protection. Our silver tarps are classified as heavy-duty due to its dense 12x14 mesh (weave) count and 12mil thickness, 6oz. per sq. yard weight, rope reinforced edges and corners, and use of heavy-duty rust resistant aluminum grommets spaced every 18” along all four sides of each tarp. Aside from being used as top covers for canopy frame structures, our tarps are also commonly used to cover leaky rooftops, as dust covers to ensure that valuables don’t get wet or dusty in storage, and ground cover to keep whatever else above it dry. And due to its color, our silver heavy-duty tarps have a reflective quality to it and tends to provide more shade when used as a canopy top cover.