Tyvek Protec 120 Roof Underlayment - 10 Square - 4' x 250'

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DuPont Tyvek Protec 120 Roof Underlayment is an engineered synthetic roofing underlayment with industry-leading walk-ability. It is ideal for slopes 2:12 or higher and can be used under a variety of roofing materials, including asphalt shingles, cedar or metal roof cladding. The four-layer construction offers high performance with a slip resistant coating gripping it to the roof, woven polypropylene giving it strength, a water barrier layer, and grooves on the top layer expelling water and dirt to provide a safer work environment. It is wrinkle-free, easy to chalk, protects the roof during installation as a moisture barrier and withstands UV exposure for up to 3 months. It is trusted protection that can give both professional builders and homeowners greater peace of mind.


  • Industry-leading walkability
  • Offers durability and high-performance under even the most demanding conditions
  • Ideal for sloped (2:12 or higher) commercial and residential roofs, new construction and re-roofing applications
  • Easy to chalk
  • Wrinkle-free
  • Class A fire rating per ASTM E108
  • UV-resistance with up to 3-months UV exposure per ASTM D226 Type I & II
  • ICC-ES AC 188, Intertek approved (CCRR-1062)
  • 30-year limited product replacement warranty for builders, general contractors and Professional installers
  • Roll size 10 square


Manufacturer Part NumberD15515651
Sub BrandTyvek
AppearanceDuPont Tyvek Logo printed on RoofLiner
CertificationsNational Roofing Contractors Association, Western States Roofing Contractors Association Member, ASTM D226 Types I & II, ICC-ES AC188; Intertek approved (CCRR-1062), Class A fire rating per ASTM E108
Code ApprovalICC-ES AC188, per Intertek CCRR-1062 ASTM D226
CoverageApproximately 1000 Square Feet
Length - Feet250
Moisture Vapor Permeance.05
Package Quantity1
Recommended Materials1-inch diameter (min) metal or plastic cap-nails or 16-gauge (min) cap-staples driven flush with the roof deck surface. Nails and staple legs must be a minimum of 3/4 inch long.
Tear ResistanceMD:25 lbf, DC:40 lbf
Thickness - Inches.248 mm or 9.76 mils
Ultraviolet Protection3 Months
Warranty30-year limited product replacement warranty for builders, general contractors and Professional installers
Width - Feet4
Ships to HI/AKNo