According to manufacturer s instructions and tyvek.
Roof underlayment moisture barrier installation instructions.
Rhinoroof u20 installation instructions rhinoroof u20 is a water and vapor barrier and therefore must be installed above a properly ventilated space s.
Use a construction stapler or a hammer.
Slopes 2 12 up to 4 12.
Install two layers of roofpro underlayment apply a 20 3 4 527mm strip of underlayment parallel with and starting at the eaves.
Rhinoroof u20 is up to12 times stronger than 30 felt and offers excellent wind resistance and durability through heavy roof traffic and adverse weather conditions.
For synthetic underlayments it s best to follow the installation instructions provided by the product s manufacturer.
If any edge swelling occurs prior to roof underlayment installation all raised joints should be sanded flat.
B along the eaves and in the valleys install the leak barrier before installing deck armor roof deck protection.
Leave the top portion of the paper loose.
Always follow safe roofing practices and osha safety requirements.
Remove wrinkles and flatten surface of shingle underlayment before.
Asphalt saturated felt starting at the eaves and lapping upper courses over lower by a minimum of 2 inches.
Follow gaf leak barrier published application instructions.
Professional grade synthetic roofing underlayment udl30 installation instructions titanium udl30 is an air water and vapor barrier 06 perms and therefore should be installed above a properly ventilated space s.
C along the rake install deck armor roof deck protection leaving 6 8 152 mm 203 mm minimum of the deck exposed and then install.
Lay lines are provided on the product.
Follow all building codes applicable to your geographical region and structure type as it is considered a vapor barrier.
Roofing underlayments installation guidelines.
Starting at the eaves apply a 39 3.
It is recommended to follow all building codes applicable to your geographical region and structure type.
Rhinoroof u20 underlayment ihelps seal your home against water damage and other moisture infiltration which can cause mold growth and rotting deck boards.
Some suppliers recommend staples about every 4 inches.
Here are some more generic tips for applying underlayment.
Ensure that the space beneath the roof sheathing is properly ventilated before installing to avoid condensation problems.
Underlayment for protection against excessive moisture prior to roofing.
Allow sheathing to adjust to humidity and moisture conditions before shingle installation.
Overlay a second.
Put fasteners at least every 8 inches.
On roofs with a slope of 4 12 or greater use a single layer of 15 lb.
Tailor the underlayment installation to the roof asphalt felt underlayment has specific installation instructions outlined in the code book.