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Serving commercial properties across Colorado

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Black flat roof with spot primer applied around fasteners before coating
EPDM Roof Coating

EPDM roof coating for aging rubber roofs

Black EPDM rubber holds up for years, then starts to shrink, chalk and pull at the seams. Coating it the right way — clean, prime, then coat — seals the roof and turns a heat-absorbing black surface into a reflective white one.

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Know the warning signs

What goes wrong with EPDM

Chalking and surface wear

UV exposure slowly breaks down the top of the rubber, leaving a powdery residue. Coatings won't bond to it unless it's cleaned off and the right primer is used.

Shrinkage and pulling at the edges

As EPDM ages it can shrink, pulling at flashings, corners and penetrations and stressing the seams.

Seam and lap failures

Adhesive and tape seams can dry out and open up. These need repair before any coating goes on.

Ponding water

Low spots hold water after storms. Silicone coatings are often specified where ponding is a concern.

Primer → coat

How we coat an EPDM roof

1

Clean

Wash the roof to remove dirt and chalked rubber.

2

Repair seams and flashings

Re-secure open laps and failing flashings; reinforce with fabric where needed.

3

Prime

Apply an EPDM-compatible primer so the coating bonds to the rubber.

4

Coat

Apply the base and top coats to the specified thickness.

Black flat roof with spot primer applied around fasteners before coating Black flat roof with white seam reinforcement during roof restoration Freshly coated white flat roof edge next to an apartment building

EPDM before and during coating

Black flat roof with spot primer applied around fasteners before coating Black flat roof with white seam reinforcement during roof restoration Flat roof with red primed field and white-coated seams around rooftop vents Crew applying red primer and white seam treatment on a commercial flat roof

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Cooler roof

A white coating reflects sunlight that black EPDM would absorb.

Seamless

No laps or tape seams on the finished surface.

Less waste

The existing rubber stays in place instead of going to the landfill.

Ready to restore your EPDM roof?

We'll check the rubber, seams and insulation and tell you if coating makes sense.

Book a Free Roof Assessment