Full Product Manual

Quick Specs
HydroStop® PremiumCoat® Liquid-Applied Roong (LAR) – Version 1.3
17
GENERAL SUBSTRATE PREPARATION
Substrate Preparaon: Metal
Areas of Concern Preparaon
Crickets
• Sheet metal crickets must be installed according to metal deck
manufacturer's specicaons.
• New crickets must be sealed with HydroStop® PremiumCoat® Buer
Grade Flashing under the anges before they are mechanically aached
to the curb unit and metal roof panel.
• Stch-screw cricket anges to the curb unit and metal roof panel while
the HydroStop® PremiumCoat® Buer Grade Flashing is sll wet using
fasteners.
Ponding Water Areas
• Make every eort to eliminate all ponding water areas prior to coangs
applicaon.
• Treat ponding water areas which cannot be eliminated with HydroStop®
BarrierGuard® bulked with HydroFiber prior to applicaon of other
coangs. If ponding water cannot be eliminated, areas should be treated
with a 3-course applicaon of HydroStop® BarrierGuard® and fabric.
Residual Asphalt
• Remove any exisng asphalc roof coang.
• Any residual asphalt must be coated with UniBase Primer (see Cleaner &
Primer Guide).
Pre-Finished Metal Panels
• If roof panel surfaces are known or suspected to contain Kynar-500,
other uoropolymers, or silicone, test patches need to be prepared with
and without the use of XR-2000 Primer (see Cleaner & Primer Guide).
Based on test patch adhesion results, Installer should apply primer on
pre-nished metal panels per specicaons.
Pitch Pans
• Pitch pans must be capped with sheet metal so they can be sealed
with HydroStop® PremiumCoat® Buer Grade Flashing. Contact GAF's
Technical Services Department for more informaon.
Neoprene Pipe Boots
• Install neoprene boots prior to performing ashing work for certain types
of pipe penetraons. Neoprene boots rst must be sealed to the roof
using a bead of HydroStop® PremiumCoat® Buer Grade Flashing prior
to mechanical aachment with fasteners.
Condensate Lines
• Condensate lines should be installed from the HVAC units to guers as
part of the overall roong contract. Type of piping used for condensate
lines may vary depending on local building codes.
• Condensate lines must be securely fastened to panel ribs. All fastener
heads must be encapsulated with HydroStop® PremiumCoat® Buer
Grade Flashing.
Cinch Straps at Panel End Laps
• Re-ghten cinch straps as necessary.
• Surround each strap and fastener head with a bead of HydroStop®
PremiumCoat® Buer Grade Flashing.
• Encapsulate the cinch strap water channel, then seal the enre lap,
strap, and fastener heads with a minimum of 12 inches (305 mm)
width of HydroStop® PremiumCoat® Buer Grade Flashing. Feather
the HydroStop® PremiumCoat® Buer Grade Flashing out. Fabric is not
required.