DuPont Tyvek Protec 120 Roof Underlayment - 4' x 50' - 2 Square

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Quick ID: Q28837
$24.97 $27.97
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  • 2 square roll size is easy to handle
  • Industry-leading walkability
  • Offers durability and high-performance under even the most demanding conditions
  • Ideal for sloped (>= 2:12) 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


DuPont Tyvek Protec 120 Roof Underlayment 2 Square rolls are packaged 4' x 50', making it more manageable for a one man job, for those smaller projects, or when only a few more squares are needed. The engineered synthetic roofing underlayment has industry-leading walk-ability and is ideal for slopes 2:12 or higher. It 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.


Manufacturer Part NumberD15517414
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 200 Square Feet
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
Ultraviolet Protection3 Months
Warranty30-year limited product replacement warranty for builders, general contractors and Professional installers

Weights and Dimensions

Weight (Pounds)5.4
Length (Feet)50
Thickness (Inches).248 mm or 9.76 mils
Width (Feet)4


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