Leave Old Felt On Roof

Above is a peel and stick mineral surfaced roofing underlayment shown during installation of a metal standing seam roof.

Leave old felt on roof.

And as someone else posted you need to apply the ice and water to the plywood directly. The 20 30 40 50 yr designations on your shingle type only refers to the length of time ther manufacturer anticipates the shingle will resist the sunlight weather. This would impact the felt s ability to protect against moisture. If you re going to add a roof on top of an old one it s a good idea to remove any loose shingles and apply a new layer of 30 pound roofing felt before laying the new shingles.

The felt is the last line of defence. This is done to ensure a flat surface for the roof felt. I know its tempting because sometimes the shingles come right up and leave the felt nicely intact. Sweep the roof clear of grit and dirt to avoid poking holes in the new felt.

One disadvantage of traditional felt roofing underlayment is it generally can t be left exposed for more than a few hours. It looks as if the installer of asphalt roof shingles still visible at below right but now worn out may have placed roofing felt on top of a still older wood shingle roof. But if the felt roof is done with good thickness high performance felt it should last a long time depending on when it was done. So if your contractor is not recovering your old roof with new felt you are not getting a reroof.

Call for free estimates from roofing pros now. Photo courtesy galow homes. The material may dry out or leach oils in the heat. My boys always try to sway me into leaving it no dice.

Lay down felt and secure to roof. You must remove any rotted pieces of wood on the roof and replace them with your plywood planks. Having a layer of roof felt will block the resin preventing it from staining or compromising your roof shingles. When to use roof underlayment no matter what type of asphalt shingle you are using whether traditional or more robust styles such as under premium designer architectural and performance shingles it is recommended to use a underlayment.

Also you will need to remove any old felt on the roof as well as any nails or roof staples. The old felt should be stripped off and the boarding aswell so you have a clean service for rubber or you can primer for a fibreglass roof. Hope all goes well. Use the hammer s claw and the stanley knife to rip away the bulk of the felt then the screwdriver and the claw to pull out the old clout nails.