Is It Okay To Leave Old Felt On Roof

In these instances the felt beneath the older shingles is regarded as adequate.

Is it okay to leave old felt on roof.

Having a layer of roof felt will block the resin preventing it from staining or compromising your roof shingles. He took the shingles off and the felt paper is still intact. Is it okay to leave the old felt on. One disadvantage of traditional felt roofing underlayment is it generally can t be left exposed for more than a few hours.

He s wondering can you just go ahead and shingle over that or should you replace the underlayment. Is roofing felt required. Oh you should put new felt paper on. Roofing underlayment roofing felt requirements.

It will break down in sunlight and with large amounts of ongoing. 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. Felt details for various roof slopes amp. The only thing i could think of that would potentially be a problem is this.

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. Is it okay to leave the old felt on. Sometimes theres no reason to remove the old felt.

If an experienced roofer doesn t notice any bad spots just by walking on em they probably aren t there. 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. This article series discusses roofing felt specifically addressing the roofing code or roofing manufacturer s requirements for use of an underlayment such as roofing felt tarpaper or other underlayment products beneath asphalt shingles and other. The material may dry out or leach oils in the heat.

If you do not remove the old tar paper you will not be able to see potential damage hiding under it. You can tell the decking is bad when you walk on the roof deck during tear off if the felt is laying flat leave it on i would have him use 15 lb ul felt. It prevents wood resin stains. Advertisement as to the ceiling stain in the living room this may have occurred prior to installing the new.

It would be crazy to try to save that old felt paper.