Is It Okay To Leave Old Felt On Roof

Oh you should put new felt paper on.

Is it okay to leave old felt on roof.

The material may dry out or leach oils in the heat. When you use certain types of wood to construct your deck there is sometimes a risk the wood will leach small amounts of resin over time as it ages. It will break down in sunlight and with large amounts of ongoing. Roofing felt can get wet and still maintain its integrity as long as it is not exposed to the elements for more than a few days.

If you do not remove the old tar paper you will not be able to see potential damage hiding under it. He took the shingles off and the felt paper is still intact. There are several disadvantages to using felt underlayment on a roof. Is roofing felt required.

One disadvantage of traditional felt roofing underlayment is it generally can t be left exposed for more than a few hours. This would impact the felt s ability to protect against moisture. It would be crazy to try to save that old felt paper. Felt details for various roof slopes amp.

Roofing underlayment roofing felt requirements. The only thing i could think of that would potentially be a problem is this. Is it okay to leave the old felt on. It prevents wood resin stains.

Advertisement as to the ceiling stain in the living room this may have occurred prior to installing the new. He s wondering can you just go ahead and shingle over that or should you replace the underlayment. Sometimes theres no reason to remove the old felt. Having a layer of roof felt will block the resin preventing it from staining or compromising your roof shingles.

You re already there now so the new underlayments today are so much better than the old ones. Just like they said if its a re roof you do not need felt paper if you are not tearing the roof off you need drip edge and shingles and depending on how good of a roofer you are and what kind of job you do all the other little stuff like flashing new pipe flanges caulk etc but if you are tearing the old roof off than you must have felt and yes we take all the old tar paper off till you see nothing but plywood how else can you see if the wood is all ok. As long as the sheathing is ok and by the look of it it probably is a double layer of felt will do no harm. In these instances the felt beneath the older shingles is regarded as adequate.

If an experienced roofer doesn t notice any bad spots just by walking on em they probably aren t there.