Laying Roofing Felt Over Old Felt

Ensure the felt remains even and straight as you work.

Laying roofing felt over old felt.

Tack the felt onto the initial rolling spot using a tack gun. Fit felt around vent pipes or other protrusions by cutting it with a utility knife and fastening around the bottom of the vent. Old felt is part of the old roof. But you must take care to install shingles correctly so they lie flat.

Paint a thin layer of adhesive over the first felt layer. Lay it over metal flashing edges around vents and pipes. Roofing felt comes in rolls that feature pre marked lines 2 to 3 inches from the top and bottom edges. Remove the drip edge and apply a thin strip of roofing cement at the top edge above the line you marked and.

Return to the side that you began rolling from and. Attaching your roof felt 1. The felt should be secured every six inches with nails or staples. How to install roofing felt prep work.

Installation is easier than for a tear off job because you can use the existing shingles as guides for laying the new ones. Use a felt tip marker to make a short line on the drip edge to indicate proper position. Continue pulling the felt tight. Unroll the felt so that the lines are facing upward.

If conditions are right new shingles laid over old shingles can be just as attractive and durable as shingles laid on bare sheathing. Step 3 cover the old shingles. Using galvanised clout nails nail down the first layer of felt. The roofing felt should be applied in layers that overlap.

Johne5 november 19 2014 9 41pm 10. Start rolling the first layer of felt out from the bottom of one side of the roof. Install a layer of roofing felt over the roof before you begin installing the new shingles. Begin at the bottom right or.

Another reason why to tear off felt is if you are putting on ice and water shield by code of course it does no good over felt. Most roof rot i d say over 90 at least around this neck of the woods occurs at the eaves not in the main field area. This will help keep any moisture from getting under the felt. It s best to start nailing in the center and work out from there.

Step 2 position the first row of roofing felt flush on the bottom with the edge of the gutter apron. Ideally the roof should be done when there is a forecast for several days without a lot. Start at the bottom of the roofline and work. The layers of felt should be overlapped by 1 inch as you work toward the roof ridge.