Will Silicone Harm Rubber Washer Om Metal Roof

These roofs are all single ply membranes that often have an oily film on them at installation.

Will silicone harm rubber washer om metal roof.

Screwing into plywood isn t a great idea. Silicone coatings are less elastic than comparable coatings and have a tendency to crack and peel quickly. Occasionally a screw misses the mark altogether and misses the metal strut or wood framing that it needs to bite securely. If you decide to go with a metal roof then that guarantee might stretch out to 50 years or more.

While these coatings are effective against water they get dirty and lose reflectivity up to 45 and any energy savings very quickly. As the oil comes off the roof the silicone will too. If your screws are hitting the rafters replace the short screws with new longer screws with new rubber washers. So we offer a primer that cleans off this oily film and allows the silicone to adhere perfectly.

This protects the rubber from the uv rays of the sun greatly prolonging its life span. The metal washer covers the neoprene rubber seal almost completely leaving only a thin edge exposed. When this happens the washer has nothing to seal against. When you choose to work with a silicone roof coating instead then the product may provide you with a 10 year warranty or sometimes longer but some providers might only give you 5 years of protection.

This oily film prevents the silicone from getting a good hold on the roof itself.