Old Felt Roof

If you already have felt on the roof remove it along with any excess nails.

Old felt roof.

For pieces that aren t coming loose press a putty knife underneath it. Remove old felt from the roof with your hands and a putty knife. Never apply roof felt to a surface layer that is wet or damp it could lead to warping of the decking below or even to the rotting of the shed roof. Repair anything that needs repairing.

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. No 15 felt and no. Including removal of old felt and failed decking installation of 100 mm celotext between ceiling rafters new deck in 22mm osb3 and the glass fibre covering. If you need to replace any boards be sure to coat them with a preservative.

Actually i attended a roof seminar 10 yrs ago or so and they stressed removing the old felt their theory was the old felt acts like a dry sponge and removes the good properties from the new application. Apply pressure and chisel away at it until it comes loose. 4 or 5 years ago it cost us 6k ish for a 13 x 4 m 52 sq m flat roof in fibre glass. Roll the new felt out on the roof and allow it to stay on the roof for about 30 minutes.

Im not sure i buy into this thinking the whole way. Check to ensure the roof is in good enough condition to walk over. This is done to ensure a flat surface for the roof felt. Also you will need to remove any old felt on the roof as well as any nails or roof staples.

Felt roofing underlayment is one of the oldest types of roofing underlayment. It s created by saturating paper or fiberglass mat with asphalt. The rolled roofing is the same material as asphalt shingles but in a long roll rather than cut into rectangles. You must remove any rotted pieces of wood on the roof and replace them with your plywood planks.

Felt roofing underlayment is typically available in two types. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment. You will be looking for any decking that has rotted or bowed. Pull out nails that are holding felt to the roof using the sharp end of a claw hammer.

Grab loose pieces of felt and pull them off the roof with your hands. Also strip any old felt that may already exist. Lay down felt and secure to roof. Metre felt roof with fibre glass.

The roofing felt is meant to be put down first and then covered with a layer of shingles or rolled roofing as the felt will not hold up to the weather on its own.