Instructions / Assembly

Quick Specs
HydroStop® PremiumCoat® Liquid-Applied Roong (LAR) – Version 1.3
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Substrate Preparaon: Metal (Cont’d.)
Areas of Concern Preparaon
VERTICAL SEAMS
Ribbed Seam
• All ribbed panel vercal seams must be sealed with HydroStop®
PremiumCoat® Buer Grade Flashing. Feather the coang unl
seams are no longer visible while brushing in the direcon parallel
to the seam.
Standing Seam
• All standing vercal seams must be sealed with a 1/2 inch (12 mm)
bead of HydroStop® PremiumCoat® Buer Grade Flashing. Feather
the coang unl seams are no longer visible while brushing in the
direcon parallel to the seam.
Standing “T” Seam
• Both vercal seams of the standing "T" must be ashed with a 1/2
inch (12 mm) bead of the HydroStop® PremiumCoat® Buer Grade
Flashing and brushed into the seams.
Inverted “J” Seam
• In snowy climates and/or when roof leaks are suspected, re-
crimping the short leg of the seam all the way under the horizontal
poron of the inverted "J" seam is required. Brush or trowel-apply
HydroStop® PremiumCoat® Buer Grade Flashing over the newly
created single lock vercal seam. Portable seamers may be used to
perform the re-crimping.
Corrugated Seam
• All corrugated panel vercal seams must be sealed with
HydroStop® PremiumCoat® Buer Grade Flashing. Feather the
coang unl seams are no longer visible while brushing in the
direcon parallel to the seam.
Baen Seam
• Both vercal seams of the baen must be ashed with a 1/2
inch (12 mm) bead of HydroStop® PremiumCoat® Buer Grade
Flashing. Feather the coang unl seams are no longer visible
while brushing in the direcon parallel to the seam.
HORIZONTAL SEAMS
Horizontal Seam
• All seams must be reinforced with two layers of HydroStop®
PremiumCoat® Buer Grade Flashing with fabric or TOPCOAT®
Liquid Fabric.
• The coang must be feathered at least 1 inch (25 mm) beyond
each side of the 6 inch (152 mm) width to allow water to ow over
the seam.
• Fabric must be cut around all fasteners so it lies at.
• For ribbed roof panels, the fabric must be applied over panel ribs
in connuous lengths. A minimum 2 inches (51 mm) overlap is
required for all splices in fabric.
• Horizontal seams must be secured with fasteners on the high side
of every other corrugaon, spaced no more than 12 inches (305
mm) on center.
• The horizontal seam must be made ush by installing two
fasteners per ute.