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FEATURES AND BENEFITS
One Step Technology Better than Fasteners
• Easy to apply, no • No damage to structural decking
mixing • Eliminates fastener back-out
• No temperature • No noise associated with drilling
restrictions • No unsightly fasteners on
One Step ™ Low Rise Foam • exposed decks
No fastener or deck corrosion
•
Eliminates
minor surface • Saves labor
High strength
•
Foamable Adhesive Elastomeric No Solvents
irregularities
• Remains flexible • Low odor
No flame hazards
•
• Absorbs stresses • 100% solids

PRODUCT DESCRIPTION
Weather-Tite One Step Foamable Adhesive is a highly
elastomeric, one-step, all-purpose, foamable adhesive
that contains no solvents, sets in minutes, and is designed
for use with our patented application process.*
Our One Step application process eliminates error due to
poor mixing. Application is quick and easy, resulting in
significant labor savings for the contractor. No expensive
specialty pumps or spray rigs are required.

BASIC USE
Weather-Tite One Step Foamable Adhesive is designed for
use as an adhesive for bonding approved roof insulations
to a building’s structural roof deck, base sheets, other APPLICATION
insulation boards, and smooth or properly prepared 1. With a utility knife, remove the molded tips at the
graveled built-up roof surfaces. groove from the One Step mixing head.

Weather-Tite One Step Foamable Adhesive eliminates 2. Attach a One Step mixing tip to the threaded mixing
the need for mechanical fasteners that can often cause head.
damage to the roof deck, which can reduce the roof’s
service life. 3. Place the cartridge into the appropriate One Step
applicator.
APPROVED INSULATIONS AND SUBSTRATES 4. Apply Weather-Tite One Step Foamable Adhesive
• HD wood fiber • Gypsum directly to the substrate, using a ribbon pattern. Space
• Isocyanurate • Cementitious wood fiber ¼” to ½” (0.635cm to 1.27cm) wide beads, 12” (30cm)
• Perlite - minimum • Lightweight insulating concrete o.c., to achieve proper coverage rates for insulation
3/4” (1.9 cm) • Wood or steel attachment. As adhesive is applied, immediately place
• Polystyrene • Modified bitumen membranes insulation board into wet adhesive. Do not allow the
• Gypsum cover and base sheets (sanded or adhesive to skin over. Eliminate uneven surfaces to
board granule surfaced) ensure positive contact between the insulation board
• Asphaltic cover • Approved insulations (multi-layer and substrate.
boards applications) 5. Un-used material can be applied at a later date by
• Concrete • Smooth or gravel surface built-up simply plugging the cartridges (with provided half moon
roof (re-roof applications) plugs) and using a new One Step mixing tip.

Contact our Technical Department for a complete list of
approved substrates and insulation types.

WTT Systems - Roofing Division n A Millennium Adhesive Company n 888.564.9733 n wttus.com