Will Silicone Harm Rubber Washer Om Metal Roof

If you decide to go with a metal roof then that guarantee might stretch out to 50 years or more.

Will silicone harm rubber washer om metal roof.

This protects the rubber from the uv rays of the sun greatly prolonging its life span. If your screws are hitting the rafters replace the short screws with new longer screws with new rubber washers. This oily film prevents the silicone from getting a good hold on the roof itself. While these coatings are effective against water they get dirty and lose reflectivity up to 45 and any energy savings very quickly.

Occasionally a screw misses the mark altogether and misses the metal strut or wood framing that it needs to bite securely. Screwing into plywood isn t a great idea. So we offer a primer that cleans off this oily film and allows the silicone to adhere perfectly. Silicone coatings are less elastic than comparable coatings and have a tendency to crack and peel quickly.

Even then after 15 20 years its not a bad idea to have someone go up on the roof and inspect the fasteners. 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. Most roofers install metal roofing on purlins 1x4 or 2x4 strapping installed parallel to the ridge giving the roofing screws something better to bite into. When this happens the washer has nothing to seal against.

If a screw is driven into the metal roofing panel at an angle the rubber washer cannot sit flatly on the roof and will not seal.