Grace Triflex Under Steel Roofing

It is 10x stronger than the 15 felt and prevents blow offs and tears in windy conditions.

Grace triflex under steel roofing.

It is more than 20 times stronger than 30 felt. Suitable for use under all major roof coverings grace tri flex mechanically attached underlayment can be used under shingles tiles slate metal and cedar shakes. Tri flex is a mechanically attached roofing underlayment that can be applied under nearly any roofing material shingles tiles slate metal and more. Grace tri flex xtreme should not be used at slopes less than 2 12 provided the slope is also acceptable to the primary roof covering.

Grace tri flex xtreme is attached to the roof with roofing nails or. On slopes of less than 3 12 grace tri flex xtreme should be half lapped a full 20 in. Over the underly ing course shingle style. Tri flex xt is coated on both sides with a new and enhanced coating formulation made up of slip resistant polymer for exceptional foot traction.

Tri flex 15 underlayment is an engineered woven fabric coated on both sides with polypropylene. Exceptional uv resistance allows it to be exposed for up to six months before installing the final roof covering. This proprietary resin formula is used in the walk and deckside surfaces to create a slip resistant surface. The grace tri flex xt is a woven synthetic water shedding underlayment that is high performance.

Tri flex 15 underlayment acts as a secondary watershedding material below mechanically attached roof coverings. Refer to subsequent sections for more details.