YEP460 Roof Underlayment is your high quality roofing underlayment designed to shed water off your roof and away from your home or building. This Hybrid product uses advanced technology, combining the best properties of traditional organic felts and synthetic products. ThisYEP460 advanced design creates a superior roof underlayment with faster and easier installation, as well as improved performance and durability.
DESCRIPTION: YEP460 Roof Underlayment is your high quality roofing underlayment designed to shed water off your roof and away from your home or building. This Hybrid product uses advanced technology, combining the best properties of traditional organic felts and synthetic products. ThisYEP460 advanced design creates a superior roof underlayment with faster and easier installation, as well as improved performance and durability.
Roof underlayments perform a vital role in protecting your home or building against damage from wind, moisture, rain, UV and other destructive elements. Unfortunately, most do not stand up to the test of time. Whether it is wind, water or UV damage, YEP460 provides the most advanced protection in its class. Rest assured, you are protected from the elements with YEP460 Roof Technology.
EXPOSURE: This product can be left exposed for up to 180 days. Exposure period is based on standardized testing for UV Resistance only. For high winds, ensure proper nailing pattern.
USES: YEP460 is an excellent underlayment for steep-slope roofing such as shingles, wood shake, tile, metal, slate and other roof coverings. YEP460 acts as a secondary protection barrier. Underlayments will not prevent wind driven rain from entering the building without sealing laps. YEP460 is not recommended for low slope roofs less than 2:12. Not recommended or designed as a permanent or primary roof covering.
PREPARATION AND REQUIREMENTS: Always follow local buildings codes for you specific region. Ensure the deck is dry, smooth and without voids or unsupported areas. Remove any and all existing nails, fasteners or staples. All decayed, rotting, rusted or broken materials must be removed and replaced before installing your roof underlayment. Deck must be in sound condition, stable and secured to sound framing with the correct fasteners, clips and spacing as per local building codes and/or shingle or roofing manufacturers published specifications. If using new OSB sheathing or plywood, a gap should be left between sheets to allow for expansion and contraction of new sheathing and prevent bulging and ridges from forming. Spacing should be approximately 1/8” at end joints and 3/16” at side joints. Verify with the shingle or other roofing manufacturer’s specifications. To help alleviate expansion and contraction of new OSB or plywood, allow the material to be pre-conditioned prior to installation. Always use a minimum of 1” long corrosive resistant nails with a minimum of 3/8” head (ring shank nail leg is recommended). Staples should NOT be used. If underlayment is left exposed more than five days, 1” plastic caps or tin caps must be used. These caps may also be required as per local building codes. Check local codes prior to starting work. Hammer in all nails at a 90° angle to the roof deck. Nails should be snug and hammered flush to the deck with no spaces or gaps. Where you have seams, joints or tears that require sealant, use VARRA approved sealants or tapes. It is recommended to seal laps when there will be exposure to high winds or driving rain. When an ice barrier is required or for extended warranty, install Weather-Armor SB-1 in all valleys and along perimeter edges according to product instructions.
