Cork insulation; a complete illustrated textbook on cork insulation ...

314 CORK INSULATION
mixed product*, should be applied exactly as received, without
adding sand or any other material whatever. If, by reason of
evaporation, the product is too heavy to work easily under a
trowel, add as little as possible of clean water, working it well
through the mass.
Apply the first coat of emulsified asphalt plastic approximately
3/32-inch in thickness, keeping the trowel wet, and
working the material well into the surface voids of the cork-
board. Then apply the second coat to the first, after the first
coat has set up, approximately 1/32-inch in thickness, and
trowel as smooth as the material will permit. After the second
coat has taken its initial set, sprinkle with water and
trowel again, to obtain a smooth, hard surface.
Do not score the surface of the emulsified asphalt plastic
finish, unless specified.
143.—Concrete Wearing Floors.—See that the exposed sur-
face of the corkboard has been flooded to a thickness of
approximately ^-inch with hot odorless asphalt, so that the
entire surface of the <strong>insulation</strong> is thoroughly protected.
JN HOT AAPHfi^LT
E" COU-K, bOA.t2,D —
H
HOT Ac5PMAvL.T
b"cjONcc.LTL rLOOC auNroccLD
WITH WICLL NLTTlNCj. I" OLMLNT TINI^H
FIG. 142.—DIAGRAMMATIC ILLUSTRATION OF CONCRETE WEARING
FLOOR (REINFORCED) OVER DOUBLE LAYER COUKBOARD ON
COOLER FLOOR.
Prepare suitable concrete in reasonable quantity, mixed
one part Portland cement to two and one-half parts clean,
sharp sand, and five parts clean gravel or crushed stone.
Cover the corkboard to a depth of 3 inches with the concrete,
tamp until the water comes to the surface, and let stand until
*If the emulsified asphalt plastic material is not a ready mixed product, then prepare
the material for use only as directed by the manufacturer.