BIGFOOT HD BARRlER is designed for use under mechanically attached asphalt shingles, metal roofing and tile, replace of 15#or 30#felt.

DECK PREP: All protrusions from the deck area must be removed and ensure the deck has no voids, damaged or unsupported areas. Deck surface should be free of debris, dry and moisture free.

EXTENDED EXPOSURE: BIGFOOT HD BARRIER is not designed for indefinite outdoor exposure(see warranty for exposure time based  on specific product) the final roof covering must be installed in according to BIGFOOT HD BARRIER exposure guidelines. Depending  on roof pitch and surface conditions, it is recommended that roof jacks, toe-boards. or a storage platform be secured to support  roofing material placed on the roof.

Safety Precautions & Limitations: Depending on roof pitch and surface conditions (wet, dusty, frost), the coefficient of friction may  change, and the surface can become slippery. Use caution when walking on the roof deck, and OSHA-compliant fall protection.  BIGFOOT HD BARRIER synthetic underlaymentis not designed as a primary roof covering, and should not be left exposed beyond 30  days prior to installation of the final roofcover. Do not walk or stand on the BIGFOOT HD BARRIER until it is attached to the roof  deck according to installation instructions.