Old Felt Roof

Check to ensure the roof is in good enough condition to walk over.

Old felt roof.

Item 656632 model 0903000. Repair anything that needs repairing. Lay down felt and secure to roof. Gaf shingle mate 36 in x 144 ft 400 sq ft felt roof underlayment.

Im not sure i buy into this thinking the whole way. Also you will need to remove any old felt on the roof as well as any nails or roof staples. Remove old felt from the roof with your hands and a putty knife. Roll the new felt out on the roof and allow it to stay on the roof for about 30 minutes.

You must remove any rotted pieces of wood on the roof and replace them with your plywood planks. Felt roofing underlayment is one of the oldest types of roofing underlayment. 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. Also strip any old felt that may already exist.

Grab loose pieces of felt and pull them off the roof with your hands. 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. 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. 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.

The rolled roofing is the same material as asphalt shingles but in a long roll rather than cut into rectangles. If you need to replace any boards be sure to coat them with a preservative. Apply pressure and chisel away at it until it comes loose. It s created by saturating paper or fiberglass mat with asphalt.

This is done to ensure a flat surface for the roof felt. Metre felt roof with fibre glass. 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.

For pieces that aren t coming loose press a putty knife underneath it. If you already have felt on the roof remove it along with any excess nails. Felt roofing underlayment is typically available in two types. 4 or 5 years ago it cost us 6k ish for a 13 x 4 m 52 sq m flat roof in fibre glass.

It does act to prevent leaks though as it seals around the nails.