Roofing Ok To Leave Old Underlay

I know its tempting because sometimes the shingles come right up and leave the felt nicely intact.

Roofing ok to leave old underlay.

What to do if the old roof is not straight if the existing roof has wavy horizontal lines you can take out the waves by snapping a horizontal line 1 2 inch below the shingle bottoms of one course. And that s actually better when you re dealing with old roofing as it adds an extra layer of weather proofing overall. If the underlayment is old and deteriorated it won t protect your roof deck from water that gets past the shingles. Roofing underlayment roofing felt requirements.

The roofer was to strip of all the old felt but left a layer on. When i sell a roof its in the contract to remove all exsisting shingles and underlayment for inspection and renailing any loose plywood. If we only performed roof installations during dry weather we d have nothing to do for six months of the year. Roofing during wet weather is just part of the job in the great pacific northwest.

Sometimes called roofing felt underlayment roofing tar paper or roll roofing this is a layer of protection installed between the roof deck and the roofing shingles. Felt details for various roof slopes amp. 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. It is typical for the roof to be in this condition for 30 60 days while other phases of the construction are completed.

For starters it s a bit on the thicker side. He then placed an underlay and a minereal top coat. But once the underlayment is in place the roof is protected. Install a course along the snapped line then install succeeding courses using a guide or a snapped line.

Roofing underlays are one of the most important elements of a roofing specification and choosing the right product is essential to ensuring the finished structure is weather resistant and provides years of trouble free service. It depends on how much rain and for what duration. What type of roofing underlay should i use. Is roofing felt required.

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. Over a long and i mean long period of time the sun heat will dry out the. My boys always try to sway me into leaving it no dice. The old layer of underlay was raised and in bad condition and the roofer cut it in long lines in lots of places and nailed it down.

I recently had a roof re felted. In snowy climates most new roofs these days get an ice and water shield a rubbery moisture membrane applied to the sheathing along the eave to protect against ice dams. And as someone else posted you need to apply the ice.