Installation Guide

DESCRIPTION: United Coatings
™
Roof Mate
™
Base Coat is a water-
based, acrylic elastomeric base coat that is part of the Roof Mate
™
Coating System. Roof Mate
™
Base Coat utilizes the latest advances
in acrylic technology to improve adhesion of Roof Mate
™
Top Coat
and to provide bleed blocking on asphalt roofs. It also builds
film thickness necessary to protect the roof.
USES: Roof Mate
™
Base Coat is designed to be used with Roof
Mate
™
Top Coat and various primers on existing metal, concrete,
TPO, PVC, and most asphaltic membrane roofs. New metal and
concrete roofs should be weathered for at least 30 days. New
asphaltic, TPO, and PVC roofs should be weathered for at least
90 days. Note: For use on EPDM or smooth APP membranes, see
gaf.com for more details. Do NOT use on gravel-surfaced roofs or
shingle roofs.
SUBSTRATE PREPARATION: All surfaces must be clean, dry, and
free of any dirt, dust, oil, surface chemicals, or other contaminants
that may interfere with optimum adhesion. Any unsound areas
in the roof must be repaired or replaced prior to application.
Deteriorated or badly corroded metal must be replaced prior to
application. Note: TPO & PVC roofs must be primed before applying
Roof Mate
™
Base Coat. See gaf.com for more details.
MIXING: Thoroughly mix using a power mixer for a minimum of 5
minutes prior to application. For 5-gallon (18.9 L) pails, use a 3”
(76 mm) minimum diameter mixing blade. For 55-gallon (208 L)
drums, use a 6” (152 mm) minimum diameter blade.
APPLICATION OF BASE & TOP COATS: Apply one coat of Roof
Mate
™
Base Coat and a minimum of one coat of Roof Mate
™
Top
Coat with a brush, roller, or sprayer. Roof Mate
™
Top Coat can
be applied over Roof Mate
™
Base Coat once the base coat is dry
enough to walk on. Dry times will vary based on temperature
and humidity. Apply both base and top coats at a rate of 1.0 – 1.5
gallons per 100 square feet (4.1 – 6.1 L/10 m
2
). Allow each coat
to dry before applying next coat. Apply each subsequent coat
perpendicular to the previous coat to ensure proper coverage. Total
system should use minimum of 2.0 – 3.0 gallons per 100 square
feet (8.2 – 12.2 L/10 m
2
). Coverage rate will vary depending upon
the substrate, its surface profile, and porosity. Rough substrates
will require additional coating. Total finished dry film thickness must
be at least 17.5 mils (0.44 mm).
SPRAY INSTRUCTIONS: Apply product with an airless sprayer,
covering the surface at an even rate. Use an airless spray pump
with a 1 gallon-per-minute (3.8 L/minute) output and 2,000 psi
(13,790 kPa) pressure capability. Use a reversible, self-cleaning
tip with orifice size 0.027” – 0.039” (0.69 – 0.99 mm) and a fan
angle of 40° to 50°. Filter screens should be 30 mesh or larger.
For lengths up to 75 ft. (23 m) from pump, use a 3/8” (9.5 mm)
minimum inside diameter, nylon high pressure-type hose. For
lengths of 75 ft. – 200 ft. (23 – 61 m) from pump, use 1/2” (12.7
mm) inside diameter hose added to pump side of existing 3/8”
(9.5 mm) hose to maintain pressure and delivery. For lengths over
200 ft. (61 m) from pump, use 5/8” to 3/4” (16 to 19 mm) inside
diameter hose added to pump side of existing hose.
CLEAN-UP: Clean equipment and overspray with water before
curing. If coating has hardened, clean with mineral spirits or
biodegradable turpentine solvent. Clean hands with soap and water
or waterless hand cleaner.
STORAGE & HANDLING: Store material in a clean and well-
ventilated area at 40°F – 90°F (4°C – 32°C). Storage outside this
temperature range may shorten shelf life. Keep containers covered
when not in use. Do NOT allow coating to freeze.
SHELF LIFE: 18 months from date of manufacture in unopened
containers, if stored properly.
IMPORTANT: Repair leaks promptly to avoid adverse effects,
including mold growth.
• DO NOT apply on wet substrates or in temperatures below
50°F (10°C).
• DO NOT apply if rain, dew, fog, or freezing temperatures
are in the 24-hour forecast.
• DO NOT apply in the late afternoon if heavy moisture
condensation may appear during the night.
• DO NOT apply on substrates that exceed 105°F (40°C).
For technical, system, and warranty information, visit gaf.com or
call 1-800-766-3411.
FOR PROFESSIONAL AND OUTDOOR USE ONLY
WARNING
HAZARD STATEMENTS: Suspected of causing cancer.
PRECAUTIONARY STATEMENTS: Keep out of reach of children. Keep container tightly closed.
Read label before use. Do not handle until all safety precautions have been read and understood. Use with adequate ventilation. Wear
protective rubber gloves and ANSI approved safety glasses when handling this product. Dispose of contents and empty containers in
accordance with local, state, and federal regulations.
WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
CONTAINS: Titanium Dioxide (13463-67-7), Paraffinic Petroleum Oil (64742-54-7).
For further information on this product, see Safety Data Sheet at gaf.com.
BASE COAT / REVESTIMIENTO BASE
ROOF MATE
CHEMTREC 24-HOUR EMERGENCY: 800-424-9300
©2016 GAF 10/16 • 1 Campus Drive, Parsippany, NJ 07054 • gaf.com