Roof felt problem

anndy25

Our house is about 40 years old and the felt in the roof is falling to bits. Can we replace it with something that will insulate as well. Somebody told us that we need to remove the roof and have it re-felted but that sounds very expensive. Can anybody tell us what we can do?

Niv

Depends how much its 'falling to bits'. I recently repaired my felt flat roof with mastic and painted it over with sealent, worked a charm. I got the mastic and sealant from Wicks along with all the tools I needed for the job and it cost about £35.

Niv

Please ignore. Mis read posters question

ormus

yes the only way to do it properly is to remove the roof tiles/slates and refelt it.
any other method is a bodge up.
cost?
2.5k to 5k.

iamcornholio

Felt is more of a draught proof layer than a water-proofing layer. It only degrades when exposed to the sun (ie near the gutters), otherwise it will last the life of the tiles - 60+ years

Obviously, if you start poking and pulling it, then it will tear

You can insulate between the rafters if you allow for adequate ventilation into the roofspace. But unless you are converting the loft to a room, it is inefficient to insualte the rafters, and the ceiling should be insulated instead - leaving the roofspace cold