How To Apply Roofing Felt

Follow the 10 steps below in order to felt a flat roof.

How to apply roofing felt.

Pull the trigger of the gun and move the nozzle around the circumference of each nail. 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. Overlap each row at least 3 to 4 inches. If this felt is more than a temporary waterproofing measure apply roofing mastic using a caulking gun.

If you get to the end of a roll and need to begin a new roll make sure the edge of your new roll overlaps the edge of the old roll around 4 inches. Cover all nail heads with roofing mastic for long term roofing. If you live in an area with inclement weather you should consider using a special ice and water protector. Start by laying asphalt felt or other underlayment over the roof.

These applications are ideal for flat roofs or protective surfaces under roof level decks. Step by step guide for felting a flat roof. Watch our step by step video showing how to felt a shed roof with expert advice and top tips to help you complete the job with confidence. How to install felt underlayment for a new roof.

This guide will use the more durable 30 roofing felt although you can use 15 felt. Installing a roof is much more than just nailing shingles onto some boards. Hold the gun at a 45 degree angle with the nozzle pointed downwards. Includes useful advice on the best materials to use together with information.

It starts with installing solid decking usually plywood or oriented. 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. As you install your first layer of roofing felt make sure it hangs over your eave by about 6 inches. Roof felt adhesive e g.

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. Install new flashing metal flashing is often called drip edge along the. Installing the roofing felt does take care but can go very quickly. Some roofing felts are actually glued down.

Bitumen in terms of materials please note that there are several different weights for the roofing felt. 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.