How To Put Roofing Felt Down

Pull the trigger of the gun and move the nozzle around the circumference of each nail.

How to put roofing felt down. Lightly heat the flashing and the end of the roofing sheet enough to begin melting the bitumen. Put fasteners at least every 8 inches. It will break down in sunlight and with large amounts of ongoing. These thick layers of roofing felt are installed by heating the back of the felt with a butane torch and then carefully applying it to the roof.

Cover all nail heads with roofing mastic for long term roofing. Press down on the end of the bitumen to bind it to the flashing. Hold the gun at a 45 degree angle with the nozzle pointed downwards. Roofing felt can get wet and still maintain its integrity as long as it is not exposed to the elements for more than a few days.

These applications are ideal for flat roofs or protective surfaces under roof level decks. Make sure the flashing can t move at all. Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive. Roofing felt is comprised of a base made from natural materials such as wood cellulose or synthetic ones such as fiberglass or polyester and then coated or saturated with a protective coating such as bitumen asphalt which repels water but still allows the product to breathe.

Some roofing felts are actually glued down. Installing the roofing felt does take care but can go very quickly. Or you could paint it over with a rubber mastic liquid but this could be more expensive than a second covering of felt. Use a construction stapler or a hammer.

Before applying roofing you ll need to cover the sheathing with roofing felt also often called tar paper most local codes call for using 30 pound felt. If this felt is more than a temporary waterproofing measure apply roofing mastic using a caulking gun.