ROOF MATE StepByStep Application Over

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ROOF MATE Step-By-Step Application Over EPDM
ROOFING

• List of materials
• ROOF MATE WHITE
• ROOF MATE BUTTER GRADE
• ADHERE-IT
• Optional materials
• UCC (United Cleaning Concentrate)
• ROOF MATE MESH

ADHERE-IT is a required component of the ROOF
MATE System over EPDM. Please ask your
Maintenance Warehouse Rep for details.
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ROOF MATE Step-By-Step OverEPDM ROOFING
STEP 1 Cleaning Roof surfaces must be clean,
dry, structurally sound, stable, well secured and
free of excessive ponding water. Remove all loose
gravel, dirt, debris and other contaminants from
roof surface. Remove heavy deposits of dirt,
leaves, pine needles and other debris using a
broom or air blower. Any rocks, branches or other
large foreign objects should also be removed.
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ROOF MATE Step-By-Step OverEPDM ROOFING
STEP 2 Preparation Any unsound areas in the
roof deck, insulation or flashing must be
repaired or replaced. Remove gravel from
ballasted EPDM spot ballast with sand bags to
avoid excessive fluttering of the membrane.
Reinstall loose fasteners as necessary on
mechanically adhered systems. Ensure that roof
deck has positive slope to drain and that
moisture content of the existing substrate,
insulation and deck does not exceed 15.
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ROOF MATE Step-By-Step OverEPDM ROOFING
STEP 3 Priming Washing Apply Adhere-It using
a Hudson-type agricultural sprayer or airless
spray equipment at the rate of 500 sq. ft. (12.2
m²/l) per gallon. Allow Adhere-It to stand a
minimum of 10 minutes to wet out and react with
the EPDM substrate. Power rinse the roof with
clean water, beginning at the lowest point on the
roof and working upwards. Once the highest point
of the roof is reached, work down again toward
the drains or roof edge with a final rinse. On
flat roofs, work away from and then towards the
roof drains. After cleaning, the roof should be
jet black in color, indicating that the surface
has been chemically altered for optimum adhesion
characteristics.
WARNING Adhere-It is a critical component or
the ROOF MATE system when coating an EPDM roof.
Without Adhere-It, ROOF MATE will not achieve
adequate adhesion to the substrate to allow long
term performance.
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ROOF MATE Step-By-Step OverEPDM ROOFING
STEP 4 Details Tighten or re-secure all
terminations, caulk termination bars and reglet
counter-flashings with ROOF MATE Butter Grade. On
all mechanically fastened EPDM systems, remove
and reinstall any fasteners that are backed out
or "tented", no more than six (6) inches (15 cm)
from its original location. Repair all loose,
torn or open seams, holes or breaks in the EPDM
membrane by embedding ROOF MATE Mesh into ROOF
MATE. Apply ROOF MATE liberally around the area
to be reinforced. While the material is still
wet, embed a strip of ROOF MATE Mesh, centered
over the detail, applying additional material to
totally encapsulate the reinforcement fabric.
Reinforce around drains, scuppers, flashings,
protrusions and other detail areas in a similar
manner. At drip edges, refasten all metal flanges
and reinforce the area with ROOF MATE embedded
into ROOF MATE Mesh.
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ROOF MATE Step-By-Step OverEPDM ROOFING
STEP 5 Coating Application Apply 2 to 4
separate coats of ROOF MATE, using airless spray
or roller, at the total rate of 2.5 to 5.5
gallons per 100 sq. ft. (1.0 to 2.2 l/m²),
depending on warranty and/or specification
requirements. Inspect surfaces after application
of the first coat for any unseen damage that has
not been previously detailed. Repair and
reinforce any such areas using ROOF MATE Butter
Grade, or ROOF MATE Mesh embedded into ROOF MATE
prior to application of subsequent coats. Create
a self-terminating flashing by extending the
topcoat a minimum of 3 (7.5 cm) above all
protrusions, parapet walls, etc.
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ROOF MATE Step-By-Step OverEPDM Roofing
STEP 8 Options Apply walk pads, ceramic roofing
granules or Rhino Top as required to demarcate
walkways and service areas, and/or provide
non-skid characteristics. To enhance dirt release
characteristics in problem areas, apply a coat of
Acrysheen, which imparts a slick, semi-gloss
finish that aids in maintaining a clean surface.

Rhino Top is a tough acrylic coating that is
available in both smooth and textured
formulations. It is ideally suited for horizontal
surfaces that receive regular foot traffic. Rhino
Top, from UNITED COATINGS, is available from Home
Depot Supply by special request.
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Thank you for choosing quality ROOF MATE products
from UNITED COATINGS