The compressors ran all morning. The compressors ran all night. By the middle of last July the operations manager at a refrigerated warehouse east of Dallas was staring at rooftop runtime hours nobody had budgeted for, and the fix he went looking for was the commercial silicone coating dallas tx building owners keep hearing about for flat roofs. We walked that roof the following week. These notes come from the job that followed, from the first infrared reading on a 168 degree membrane to the last pass of the top coat, and they are for anyone whose rooftop units are running flat out while the interior still climbs.
Cooling Bills Climb Every Dallas Summer
A dark, weathered membrane in North Texas does not just sit there in August. Our infrared gun has read 160 degrees and better on aged modified bitumen at two in the afternoon, while a clean white coating a few feet away comes back dramatically cooler. The heat does not stop at the surface. It works down into whatever insulation is left, and the rooftop units answer the only way they can, by running longer cycles to hold the box temperature. Reflectivity is the lever, and the payoff reaches past the utility bill: guidance from the U.S. EPA points to research estimating that cool roofs across a city could offset 18 percent of the heat-related deaths tied to the heat island effect.
A landlord with one refrigerated bay in Garland called in June because his cold room could not hold 34 degrees past two in the afternoon. He was sure the compressor was dying. The roof over that bay was eleven summers old and had been drinking sunlight all day, handing it straight down to the insulation. That is not a call anyone can make from the parking lot.
What the Coating Week Actually Looks Like
Nobody rolls silicone over a dirty roof and gets twenty years out of it. The first day is power washing, and on an 88,000 square foot warehouse that alone eats a full shift. Day two is repair work: open seams, soft spots where water has been sitting, flashing at every curb and drain. Job after job, the same thing shows up at the curbs, where somebody’s old patch has been quietly feeding water into the insulation for years. Wet insulation gets cut out, never coated over. By the end of the second day the roof should be clean, dry and boring, and boring is exactly what a crew wants under a coating that is supposed to outlast the loan on the building.
Then the silicone goes down. A base coat, then a top coat once the base has set, and the roof becomes one seamless membrane with no laps left to fail. Weather sets the calendar more than the crew does. North Texas leaves a narrow window between hail season and the worst of the heat, and the spring of 2026 was a blunt reminder of why that window matters, since The Weather Channel reported an EF2 tornado at Runaway Bay with estimated peak winds of 130 mph during the April 2026 severe weather outbreak that swept the region. Coating a roof the week a supercell is in the forecast is how an owner pays for the same job twice.
Fall protection is not paperwork on this kind of job. Crews tie off near an unprotected edge, and nobody walks a roof that has just been coated, because fresh silicone is slick and there is no second chance at the parapet of a warehouse. Most bids for commercial silicone coating Dallas TX buildings price the wash and the repair work separately from the coating itself, so two quotes that look far apart are often measuring different amounts of prep. Ask which one you are reading before you sign. After the last pass, the coating needs its cure time before anyone drags a cart or a service ladder across it. Owners always ask when the meter will show it, and the honest answer is that cooling load eases in the first week of real sun while one month of billing tells you very little, because a single cool spell in Dallas can bury the difference. Within 90 days of runtime data, set against the same stretch of the previous summer, the pattern is usually readable.
Answers From the Roof We Get Most
Can Silicone Go Over a Roof That Ponds Water?
Silicone is the one coating chemistry that tolerates standing water, which is why it keeps winning on low slope warehouse roofs where the drains were never quite right. What it will not do is correct a structural low spot. If a pond is still sitting there days after every storm, the deck or the drain gets attention first and the coating goes on afterward.
Does a Coating Void the Existing Roof Warranty?
Sometimes, and it depends entirely on who wrote the warranty. Manufacturers set their own terms, and some require their own approved products or an inspection before anything goes over their membrane. Pull the warranty document and call the manufacturer before the first wash, because that phone call is free and a voided warranty is not.
The warehouse east of Dallas came through the following August with its rooftop units cycling instead of grinding, which is the change an operations manager feels long before a spreadsheet confirms it. A coating is not a new roof and it does not pretend to be. What it does is pull the heat load off an aging membrane and buy another decade of service out of a building that was already being quoted a tear off. If the units are running without a break and the ceiling is the hottest surface on the property, start on the roof with a thermometer.
