Asphalt saturated felt starting at the eaves and lapping upper courses over lower by a minimum of 2 inches.
Roof underlayment moisture barrier installation instructions.
Follow all building codes applicable to your geographical region and structure type as it is considered a vapor barrier.
Tyvek protec is a vapor barrier.
Rhinoroof u20 installation instructions rhinoroof u20 is a water and vapor barrier and therefore must be installed above a properly ventilated space s.
Underlayment for protection against excessive moisture prior to roofing.
Remove wrinkles and flatten surface of shingle underlayment before.
Roofing underlayments installation guidelines.
Lay lines are provided on the product.
On roofs with a slope of 4 12 or greater use a single layer of 15 lb.
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.
Ensure that the space beneath the roof sheathing is properly ventilated before installing to avoid condensation problems.
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.
It is recommended to follow all building codes applicable to your geographical region and structure type.
Slopes 2 12 up to 4 12.
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.
B along the eaves and in the valleys install the leak barrier before installing deck armor roof deck protection.
Starting at the eaves apply a 39 3.
Overlay a second.
According to manufacturer s instructions and tyvek.
For synthetic underlayments it s best to follow the installation instructions provided by the product s manufacturer.
Install two layers of roofpro underlayment apply a 20 3 4 527mm strip of underlayment parallel with and starting at the eaves.
Use a construction stapler or a hammer.
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.
Follow gaf leak barrier published application instructions.
If any edge swelling occurs prior to roof underlayment installation all raised joints should be sanded flat.
8 1m wide sheet of underlayment overlapping successive sheets 20 3 4 527mm.
Allow sheathing to adjust to humidity and moisture conditions before shingle installation.
Always follow safe roofing practices and osha safety requirements.
Put fasteners at least every 8 inches.
Here are some more generic tips for applying underlayment.
