Roof underlayment prevents the roof deck from being exposed to the elements before or while the roofing material is being installed.
How to staple roof underlayment.
Using your staple gun secure the felt to the roof.
Apply and attach drip edge.
Overlap each row at least 3 to 4 inches.
A recent post on underlayments brought up another subject of underlayment attachment.
Start by laying asphalt felt or other underlayment over the roof.
How to do it.
Ideally the roof covering material would be installed as soon as possible but in reality the roof may be protected by only the underlayment for days weeks or sometimes months.
Where a roll ends and a new one is begun the two rolls should be overlapped by four inches.
I checked certainteed and all i saw was that they.
I only recall one saying they used caps.
Apply drip edge to the eave.
All nails and staples should be placed on the lower half of the paper.
However depending on local roofing and fire codes it may be appropriate to secure synthetic underlayments with staples.
With staples or plain roofing nails the heads can sometimes tear right through the underlayment.
Install new flashing metal.
The overhang to the next strip should be 3 8 inch.
They re certainly faster and easier to install.
Start the roof felt at one bottom corner of the roof.
Tack it in place at the corner with the end flush with the end of the roof and the bottom edge of the roll right along the bottom of the roof.
If you live in an area with inclement weather you should consider using a special ice and water protector.
I am deciding on a contractor for a new roof and as i recall most said they simply staple the underlayment.
The paper should then be nailed in or stapled every three to four inches across.