Tarco has made available LeakBarrier Fast90 self-adhering tile
underlayment to be used for tile and slate roof system
applications. Said to offer easy and quick installation, the
underlayment has a peel-and-stick, self-adhering bottom side that
features a high-tack, SBS-modified bitumen compound protected by a
release film. A coating of SBS-modified bitumen and asphalt makes
the bottom side tacky, and adhesion strength is 30 pounds per foot
of length. The granulated asphalt coated top side is said to
withstand the weight and stresses of the tiles, and the tiles can
be stacked 8 to 10 high with no negative effects.
The underlayment has no exposure limitations. Application is
odor-free and involves peeling the release film and rolling out the
membrane. The lightweight sheets are available in white and cedar
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