Roof Underlayment Moisture Barrier Installation Instructions

For synthetic underlayments it s best to follow the installation instructions provided by the product s manufacturer.

Roof underlayment moisture barrier installation instructions. Always follow safe roofing practices and osha safety requirements. Allow sheathing to adjust to humidity and moisture conditions before shingle installation. Tailor the underlayment installation to the roof asphalt felt underlayment has specific installation instructions outlined in the code book. 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.

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. Ensure that the space beneath the roof sheathing is properly ventilated before installing to avoid condensation problems. Install two layers of roofpro underlayment apply a 20 3 4 527mm strip of underlayment parallel with and starting at the eaves.

Rhinoroof u20 installation instructions rhinoroof u20 is a water and vapor barrier and therefore must be installed above a properly ventilated space s. Slopes 2 12 up to 4 12. Underlayment for protection against excessive moisture prior to roofing. Roofing underlayments installation guidelines.

8 1m wide sheet of underlayment overlapping successive sheets 20 3 4 527mm. Lay lines are provided on the product. On roofs with a slope of 4 12 or greater use a single layer of 15 lb. Leave the top portion of the paper loose.

Rhinoroof u20 underlayment ihelps seal your home against water damage and other moisture infiltration which can cause mold growth and rotting deck boards. Asphalt saturated felt starting at the eaves and lapping upper courses over lower by a minimum of 2 inches. 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.

Use a construction stapler or a hammer. Put fasteners at least every 8 inches. Here are some more generic tips for applying underlayment. Overlay a second.

B along the eaves and in the valleys install the leak barrier before installing deck armor roof deck protection. Vertical joints should lap a minimum of 4 inches and be offset by at least 6 feet in successive rows see figure 2 2 at left. According to manufacturer s instructions and tyvek. Remove wrinkles and flatten surface of shingle underlayment before.

Starting at the eaves apply a 39 3. Follow gaf leak barrier published application instructions.