However depending on local roofing and fire codes it may be appropriate to secure synthetic underlayments with staples.
Roofing felt nails or staples.
The reason they want you to use felt nails is to prevent blow offs if left exposed or high wind areas.
The grip rite plastic cap nail is used for the grip rite plastic cap nail is used for installing roofing felt to a roofing deck.
With staples or plain roofing nails the heads can sometimes tear right through the underlayment.
Start at one of the upper corners of the felt and continue along the perimeter.
Use a construction stapler or a hammer.
When the shingles are installed the felt is not going anywhere.
Roll out about 10 feet of felt and fasten with staples or roofing nails with plastic washer heads.
Before applying roofing you ll need to cover the sheathing with roofing felt also often called tar paper most local codes call for using 30 pound felt.
Some roofers prefer to attach felt underlayment with 1 inch roofing nails or special nails with plastic washers but most codes allow staples which are easier to drive.
Place the replacement felt over the exposed area of the roof and secure using the arrow htx50 professional hammer tacker and 1 2 t50 staples.
Fasteners should be driven straight and flush with the shingle surface figure 2 10 above courtesy of steven bliss best practices guide to residential construction.
Start by stapling a row in the middle of the new roofing felt section.
Breaking it down further you ll typically use four fasteners per 3 tab shingle.
Staples can be used for tacking it down but not recommended to hold.
Smooth out wrinkles as you progress to eliminate spots that could trap moisture and cause problems in the future.
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Grip the hammer tightly by the end of the handle and hold your thumb at the top of the shaft.
Put fasteners at least every 8 inches.
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In addition these plastic cap nails can be used to install foam board insulation.
Both nails and staples should be long enough to penetrate the roof sheathing by 3 4 inch or penetrate 1 4 inch through the sheathing if it is less than 3 4 inch thick.
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When estimating nail or staple usage for your roofing project you should budget 400 nails or staples per square.
However always consult your local building authority for exact code requirements.