Grace Tri-Flex XT Synthetic Roofing Underlayment - 4' x 250' Roll


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Synthetic replacement for #30 felt

Safer - skid resistant membrane provides better foot traction

Easier - Half the weight of #30 felt and nearly 5 times more coverage

Can be exposed up to 6 months

Mechanically fastened with capped nails or staples

Suitable for use under all major roof coverings

1000 square feet coverage

Gray topside surface

Custom logo printing available


Grace Tri-Flex XT is a high performance water-shedding underlayment designed to overcome the shortcomings of traditional roofing felt. The membrane incorporates an improved skid resistance coating providing better foot traction. It is 20 times stronger than #30 felt and can withstand high wind conditions; it is lighter than #30 felt and covers more area making installation safer and easier.

Tri-Flex XT is mechanically attached to the roof and can be used alone or in conjunction with Grace self-adhered underlayments. It can be exposed up to 6 months. It has a gray topside surface. The Tri-Flex XT can be co-branded with a custom logo for an additional plate charge.


Manufacturer Grace
Brand Grace
Sub Brand GCP Applied Technologies
Color Black
Coverage (Square Feet) 1000
Installation Method Mechanically fastened with capped nails or staples; Laid horizontally, starting at bottom of roof with print side up; Side laps must be minimum of 4 in. and end laps minimum of 6 in.
Installation Tools Required Capped nails or staples having 1-inch diameter plastic/metal caps - spaced at 8 in. OC on both side and end laps. High wind and coastal zones - double fastening to 4 in. OC; All cases - fasten at 24 in. OC down middle of roll in the field of the roof
Package Quantity 1
Returnable Yes
Quick ID Q26109
UPC 048444400628

Weights and Dimensions

Weight (Pounds) 28
Length (Feet) 250
Thickness (Inches) 7 mil
Width (Inches) 48


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