Laying the top bonded layer of top sheet felt.
Underlay felt flat roof.
Laying the second bonded layer of underlay felt.
Installing any gutter drips.
Depending on local weather waterproof underlayment may be recommended.
Felt paper is applied across the entire roof deck.
The substance itself is made from bitumen which comes from the distillation of crude oil that has been either mixed with sand or crushed limestone.
How to install felt underlayment for a new roof.
It protects your roof deck while you work on it roofing felt prevents the deck from being exposed to the elements before or while the shingles are being applied.
The sequence of laying a felt roof is.
It starts with installing solid decking usually plywood or oriented.
This layer is not bonded to the decking so that the decking can move without damaging the felt roof.
United roofing gator skin synthetic roof underlayment 42 in x 285 8 ft 1 000 sq ft synthetic roof underlayment.
Synthetic underlayment technically non bitumen synthetic underlayment is the preferred underlayment of most roofing professionals today.
Laying the first nailed layer of underlay felt.