Palisade Synthetic Underlayment is 100 percent Felt Free.

Felt FreeFelt paper based asphalt underlayments are heavy and possess extremely low tear strengths… not a roofing contractor friendly combination. Felt underlayments are further plagued by wind uplift blowoffs, as well as chronic buckling and wrinkling when wet. Felts are safety hazards due to staple pull through on steeper pitches, and are just plain bulky and messy to deal with. Very simply, felt paper is an outdated technology given the increased performance demands of modern day roofing, and roofing contractors alike.

PALISADE™ is made from 100% synthetic lightweight, high strength polymer, and is 6 times lighter and 30 times stronger than 30# felt! A 10 square roll weighs only 40 lbs. Gone are the days of blow-offs and related call backs common with felt. This super efficient low weight combined with wider width and 290 ft. run length means big savings in time and labor (50% faster application than 30# felt). Fewer laps, fewer cuts, fewer rolls to handle, fewer fasteners = fewer headaches. Do more jobs in less time, inventory and handle fewer rolls, gain an edge in job site flexibility & productivity, and generate more profits.

In today’s world of increased frequency and severity of storms, tornadoes, and high velocity hurricane zone (HVHZ) winds, wind uplift (blow-off) resistance performance is crucial to primary roof covering system integrity. After witnessing the severity of roof damage caused in the US gulf coast during the 2005 US hurricane season (Katrina, Rita, Wilma to name a few), designing new roof covering systems for wind uplift resistance is of paramount importance, and this starts with the underlayment selection.

Samples of Hurricane Damage

The images above vividly illustrate the fundamental wind uplift weakness of asphalt felt paper underlayment. Wind uplift resistance is largely a function of fundamental material fastener pull-through strength. PALISADE™ possesses vastly superior tear, tensile, and cap nail pull-through strength properties1 over felt paper, delivering a wind uplift resistant underlayment technology to meet today’s modern day roofing needs: 100% felt free!

30# FELT
230 lbs.
40 lbs.
Miami-Dade County
1TAS 117(B) Test Procedure for Dynamic Pull-Through Performance of Roofing Membranes Over Fastener Heads

This cap nail pull-through strength superiority (6:1) is just one aspect of a uniquely engineered product design, resulting in PALISADE™ being the ONLY synthetic roofing underlayment currently 2005 Florida Building Code HVHZ Approved2 for use under tile (FL-5325.1; in addition to shingle, metal, slate, shake). The Florida counties of Miami-Dade/Broward which comprise the HVHZ building code zone have the toughest building code standards in the US! PALISADE™ also meets the Texas Department of Insurance (TDI) Windstorm requirements for mechanically attached underlayments for use in the 14 Texas Tier 1 Hurricane Zone counties.3

Unlike felt paper, PALISADE™ is comprised of 100% synthetic polymer, therefore unaffected by water absorption, which means it is 100% mold free (does not support mold growth), lays flatter, and you can leave the roof uncovered without the need for tarps or immediate dry in. Unlike asphalt felt paper, PALISADE™, does not dry out, crack, or leach oils (becomes slick and messy) in the heat and sun, nor does it become stiff, difficult to unroll, and crack in the cold. With a service temperature range of -70°F to 300°F, there's no need to worry about the jobsite temperature. As a polymer synthetic, there is no need for slip sheets between metal roofing systems… added savings in labor and material costs.

Even more savings:
5 Rolls PALISADE™ = 50 squares = 200 lbs
25 Rolls 30# Felt = 50 squares = 1400 lbs

That's a 1200 lbs savings per average roof in terms of roll handling and roof loading!


2. FL-5325.1 (HVHZ)
3. TDI Windstorm

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