Instructions / Assembly

Quick Specs
HydroStop® PremiumCoat® Liquid-Applied Roong (LAR) – Version 1.3
18
Substrate Preparaon: Metal (Cont’d.)
Areas of Concern Preparaon
Ridge Caps
• All ridge caps must be ashed with HydroStop® PremiumCoat® Buer Grade
Flashing with fabric.
• All voids and open areas in the ridge cap must be lled with polyurethane
foam prior to applicaon of the coang and fabric.
• For metal "Z" closures which are located within 2 inches (51 mm) of the
ridge cap edge, remove all exposed sealant and apply a liberal bead of
HydroStop® PremiumCoat® Buer Grade Flashing with fabric to all sides of
the "Z" closure where they intersect with both the roof panel and ridge cap.
Rakes
• All xed rake details for the roof must be secured and sealed with 12 inches
(305 mm) minimum width of HydroStop® PremiumCoat® Buer Grade
Flashing with fabric.
• If xed rake metal is fastened to the top of roof panel ribs and extends back
onto the roof, trim o any excess metal and follow horizontal seam ashing
procedures.
• All voids and open areas must be lled with polyurethane foam prior to
applicaon of the coang and fabric.
Parapet Walls
• All parapet wall details within the roof system must be secured and sealed
with 12 inches (305 mm) minimum width of HydroStop® PremiumCoat®
Buer Grade Flashing with fabric.
• If parapet wall ashing metal is fastened to the top of roof panel ribs and
extends back onto the roof, trim o any excess metal and follow horizontal
seam ashing procedures.
• All voids and open areas must be lled with polyurethane foam prior to
applicaon of HydroStop® PremiumCoat® Buer Grade Flashing with fabric.
• Fabric must be cut around all fasteners so it lies at. United Coangs™
UniCap fastener covers can alternavely be used.
Standing Seam Panels
• Contact GAF’s Technical Services Department (800-766-3411).
Curb Flashings
• All curb ashings, including cricket details, must be ashed with at least a 12
inch (305 mm) width of HydroStop® PremiumCoat® Buer Grade Flashing
with fabric.
• Encapsulate all fasteners using HydroStop® PremiumCoat® Buer Grade
Flashing with fabric. Do not bridge fasteners.
• The fabric must be cut around all fasteners so the fabric lies at.
Penetraons
• HydroStop® PremiumCoat® Buer Grade Flashing with fabric should be
applied around the base of all penetraons, extending at least 6 inches (152
mm) up the vercal and 6 inches (152 mm) onto the base.
• Cut the fabric to accommodate the shape of the penetraon.
Skylights
• Curb skylights must be treated in the same fashion as curb ashings.
• Aer ashing work has been completed and the coang has cured, treat
deteriorated berglass skylight panels with United Coangs™ Acrysheen
Sealer.