Roofing contractors always are looking for better, quicker and
easier methods to install insulation in roof systems. Sometimes,
there are job-specific constraints, such as the inability to use
mechanical fasteners (screws and plates) or materials that create
unpleasant odors. When something like this occurs, the use of a
polyurethane roof insulation board adhesive may be the
solution.
There are two types of polyurethane roof insulation board
adhesives used to secure elements of roof systems: one-component
and two-component. One-component products generally are known as
"moisture-cured" adhesives, and two-component products generally
are known as "chemically cured" adhesives. Both inherently do not
penetrate deck systems and are considered to be odorless or
low-odor materials.
To properly activate and set, one-component adhesives rely on
moisture in the air. One-component adhesives generally are sprayed
from a portable, pressurized container using a wand that produces a
polyurethane foam bead or poured from 1-, 2 1/2- or 3-gallon
canisters in a semiliquid state. A single canister can be used to
place a single bead of adhesive, or a wheeled piece of equipment
capable of carrying four or more canisters of adhesive can be used
to place multiple beads of...
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