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Manual Application Instructions
for EPDM Liquid Rubber®
Surface preparation
Surface
to be coated should be clean, dry and structurally sound.
Fasten loose areas with adhesive (contact cement) or pop
rivets. Oil or wax must be completely removed with
solvent. Remove loose portions of existing coatings
and brittle caulk with scraper and wire brush. Whatever
still has good adhesion may remain to be recoated.
Rusty or pitted metal should be wire brushed to remove loose
oxide. Tightly adhering corrosion may be directly coated
with EPDM Liquid Rubber® Asphalt based aluminum coatings should be removed as much
as possible by wire brush or abrasive disc. Roof cements
should be removed and replaced with butyl caulk where
necessary. Repair torn rubber with adhesive Butyl
Tape. A rubber
patch may be applied over torn area if desired. Remove
chalk from white rubber membrane by brushing with a
detergent solution followed by a water rinse or working
surface with a stiff brush. Smooth metal or plastic
surfaces should be roughed up to improve adhesion of
EPDM Liquid Rubber®. A deglossing solvent may work on some plastics.
Coverage:
EPDM Liquid Rubber® will cover up to 46 square feet per gallon on
a very smooth surface. Normal coverage is 40-42 square
feet per gallon on an average substrate. The
required 20 mil film thickness will be achieved when the
above spreading rate is used. If you are
uncertain how to calculate the amount of material you will
need, please contact Pro Guard Coatings at (800-735-4399)
M-F 8-4:30 EST.
Mixing Directions:
The container is under filled to allow
for the addition of the pre-measured catalyst that is
included. A drill, and a mixer (shown below) will be needed to
incorporate the catalyst. For a 1 gallon can a short
mixer will suffice. For 4 or 5 gallon pails you MUST
use a long shaft mixer.
The catalyst will be inside the box for 1 gallon
and 1 gallon repair kits. The catalyst will be located
under the lid in 4 and 5 gallon pails.
Mix rubber material in can/pail until uniform; center
mixer shaft in pail or can and begin mixing until a vortex is formed. Slowly
pour all of catalyst into vortex . Move mixer up and
down and in a circular motion for 2-3 minutes until all
portions of can/pail are uniformly mixed
Application:
By brush, roller or squeegee. A combination of
methods might be most effective. For example, on a
flat roof, pour a serpentine bead of material, distribute
with squeegee, finish with a short nap roll to press air out
of cracks and even out wet film. Product will self level
when sufficient material has been applied. Working
time is 4-6 hours depending on temperature.
A single
application of
EPDM Liquid Rubber®
is preferable to multiple coats.
Apply with
brush around flashings and edges using long, slow strokes.
On flat surfaces, material can be poured, spread with a
squeegee and then evened out with a short nap roller.
Touch-ups may be applied as desired after initial film has
cured and surface is first wiped with solvent.
Temperature and Cure Conditions:
EPDM Liquid Rubber®
may be applied at any temperature that
permits it being spread onto the surface. It will waterproof
immediately upon application. The solvent will evaporate at
a rate governed by temperature but will not be affected by
relative humidity. Exposure to freezing temperatures before
cure has taken place will not damage the film. The time
necessary to reach cure should not be a concern as this
process will occur automatically. Exposure to sunlight will
accelerate the curing process. The final film properties of
the cured membrane will be the same regardless of the time
required to achieve cure.
EPDM Liquid Rubber®
will provide long term
protection even under extreme exposure conditions.
Click here to
Order EPDM Liquid Rubber.
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