How To Do Roofing Felt

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 do roofing felt.

Pull out nails that are holding felt to the roof using the sharp end of a claw hammer. If you use the lines as guides for installing shingles measure up from the drip edge to confirm that you stay parallel. Snap a chalkline 32 inches above the top edge of the wsu or use the lines on the felt as guides. For roof pitches of 5 12 to 7 12 use a factor of 1 3.

Remove old felt from the roof with your hands and a putty knife. This correction factor will take into account the greater area of the roof due to the pitch. Divide the area of your roof by the area of the felt rolls you plan to use and allow an approximate 10 extra for waste. For pieces that aren t coming loose press a putty knife underneath it.

2 step by step guide for felting a flat roof. Add the second layer. Most pros use this line to begin shingling working left and right toward the rakes. Multiply the total area determined in step one by a correction factor to account for the roof pitch.

This video contains the. Unroll the felt so that the lines are facing upward. Installing the roofing felt does take care but can go very quickly. If your roof pitch is 3 12 or 4 12 multiply by 1 25.

The actual process of putting down the underlayment will be one of the fastest parts of the entire roofing process. 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. Step 2 position the first row of roofing felt flush on the bottom with the edge of the gutter apron. Prepare the second layer.

Grab loose pieces of felt and pull them off the roof with your hands. Taking the time to properly prepare the sheathing will make all the difference in how quickly and easily the felt paper is installed. 1 materials for felting a flat roof. Next find the center of the roof at the top and the eave then snap a vertical chalk line.

Roofing felt is sold in rolls and the product label will give information on the area contained. Roofing felt comes in rolls that feature pre marked lines 2 to 3 inches from the top and bottom edges. The felt keeps the roof deck dry before shingles go on protects against wind driven rain as shingles fail and increases fire resistance. Lay down felt and secure to roof.