ROOF COATINGSilicone & Acrylic

A cool roof coating turns a hot, chalked Diamond Bar roof into a sealed, reflective surface. Hillside exposure means long afternoon sun and the first of the Santa Ana winds, which is hard on a flat roof's surface and its flashings.

How we coat a roof in Diamond Bar

• Inspect and measure, including core tests where we need to know what is under the membrane
• Clean the roof — power wash, remove dirt, chalk and loose coating
• Repair: cracks, open seams, failed flashing, blisters and bad penetrations
• Prime where the substrate calls for it
• Apply the coating in multiple passes to the specified thickness, seams and details first
• Final walk for even coverage and thickness, then clean up the site

Pricing a Diamond Bar roof coating

Coating is priced by the square foot once we know the condition and how much prep the roof needs, and the number comes to you in writing before anything starts.

A coating runs well under the cost of a tear-off and replacement, and there is no dumpster, no demolition and no days of noise over the tenants' heads.

Silicone or acrylic for a Diamond Bar roof?

• Silicone: the pick for roofs that pond. It handles standing water, resists UV without turning brittle, and lasts longest of the two.
• Acrylic: the pick for roofs that drain clean. Lower cost per square, excellent reflectivity, and easy to recoat later.
• Both go down seamless, so there are no laps or fasteners for water to work into.
• Both drop the roof surface temperature sharply, which shows up on the cooling bill of a conditioned building.

When coating is the wrong call

If we find saturated insulation or a failing deck on your Diamond Bar roof, we say so. Coating over a wet roof traps the water and costs you twice.

Serving Diamond Bar and nearby

We coat commercial and residential low-slope roofs throughout Diamond Bar and the surrounding Los Angeles County communities, including Walnut, Pomona and San Dimas.

How long a Diamond Bar roof coating lasts

A silicone system at the right thickness over a properly prepped roof gives you ten years and up, and acrylic is close behind on a roof that drains well. Both systems are renewable: when the time comes you wash the roof and add another coat instead of starting over, which is why building owners keep coming back to them.

What we look for on a Diamond Bar roof

We usually recommend coating when the roof shows:

• Chalky, sun-baked membrane that has lost its surface but not its body
• A roof with years left in the deck and insulation underneath
• Flashing and penetrations that leak while the field of the roof is still solid
• Low spots that hold water for days after a storm
• A building that cooks in summer and runs the air conditioning hard

The things that actually matter

Moisture readings go in the report where a leak is suspected but not obvious.

• Ventilation gets looked at while the roof is open; most Diamond Bar attics run hotter than they should.
• One person runs your job and answers the phone the whole way through.
• Underlayment is where corners get cut; we use the system the manufacturer warrants.
• Rake and eave metal is new on every job; reusing bent metal is false economy.

Why Diamond Bar roofs fail where they do

Nobody roofs Diamond Bar the way they roof a tract in the desert, and sun on the exposed slopes dries out the cheap underlayments early. From the shop it is a 25-mile run east to Diamond Bar, so emergencies get a same-day answer.

Crews rotate through Walnut, Pomona and San Dimas, so nothing about these streets is new to us.

• Material is delivered the morning of the job, not left on the driveway for a week.
• We work around tenants and business hours where the building is occupied.
• Gutters are pulled and refitted where they block a proper drip edge.
• Gutters are pulled and refitted properly instead of being crushed by a ladder.
• We protect landscaping and the pool before a single bundle comes off the truck.

The crews fill up fast when the first storm is on the ten-day forecast. Ask for the inspection, keep the report, and decide in your own time.

Talk to a Diamond Bar roof coating contractor

The estimate is free. Call (818) 275-0921 and we will measure your Diamond Bar roof, check the deck, seams and drains, and tell you plainly whether coating is the right call.