In this article 15 sections
- How Much Does a Commercial Roof Coating Cost?
- Cost per Square Foot | Silicone vs Acrylic vs Elastomeric vs Polyurethane
- What’s Included? Cleaning, Repairs, Primer, Mil Thickness
- Coating Cost vs Replacement Cost | Savings Example
- Warranty Length and How It Changes the Price
- When a Roof Is Not a Coating Candidate
- FAQs | Roof Coating Cost
- How much does it cost to coat a 10,000 sq ft commercial roof?
- Is silicone more expensive than acrylic?
- How long does a commercial roof coating last for the money?
- Does a roof coating lower energy bills enough to pay for itself?
- Can I get a rebate for a cool roof coating in San Antonio?
- Why are some coating quotes $2 per sq ft and others $6?
- How many square feet does 5 gallons of roof coating cover?
- Find Out If Your Roof Qualifies for Coating
How Much Does a Commercial Roof Coating Cost?
The wide range comes down to one question: is the price for the coating alone, or for a complete restoration system? Below we break down both, the way we price coatings for commercial roofing in San Antonio.
Cost per Square Foot | Silicone vs Acrylic vs Elastomeric vs Polyurethane
| Coating | Installed cost / sq ft | Material only / sq ft | Handles ponding water? | Best for |
|---|---|---|---|---|
| Silicone | $1.50 – $4.50 | $0.50 – $1.40 | Yes | Flat roofs, ponding areas, high UV |
| Acrylic | $0.50 – $2.00 | $0.15 – $0.80 | No | Sloped metal, well-drained roofs |
| Polyurethane | $1.50 – $4.00 | $0.45 – $1.30 | Good | High-traffic roofs, base coats |
| Asphaltic / bituminous | $0.50 – $1.50 | $0.10 – $0.50 | Fair | Older BUR and mod-bit roofs |
Source: Roofr, Roof Coating 101 (2026). “Elastomeric” describes any coating that stretches and recovers, including silicone, acrylic and polyurethane, so it isn’t a separate price category.
In San Antonio, most flat commercial roofs get silicone because it tolerates standing water and intense UV. Acrylic is a sound budget choice on sloped metal roofs that drain well.
What’s Included? Cleaning, Repairs, Primer, Mil Thickness
Two coating quotes can be $3 per sq ft apart and both be honest. The difference is usually scope:
| Scope item | Coating-only quote | Full restoration quote |
|---|---|---|
| Power-wash and surface prep | Sometimes | Always |
| Moisture survey and wet insulation replacement | No | Yes |
| Seam, flashing and penetration repairs | Minimal | Reinforced with fabric and extra coating |
| Primer where needed | Sometimes | Yes, based on an adhesion test |
| Coating thickness (dry mils) | Often unspecified | Specified and verified |
| Manufacturer warranty | Often none | Typically 10 to 20 years, tied to thickness |
| Typical installed price | $0.50 – $4.50 / sq ft | about $3 – $9 / sq ft |
Full restoration range: Core Commercial Roofing (Texas, Jul 2026); fluid-applied restoration systems reported at $4 – $8 / sq ft (Terrapin, 2026).
Always ask how many dry mils will be applied and how it will be measured. Thickness drives both how long the coating lasts and the warranty term.
Coating Cost vs Replacement Cost | Savings Example
| 20,000 sq ft flat roof | Silicone restoration | Full TPO replacement |
|---|---|---|
| Cost / sq ft | $3 – $9 (full restoration) | $7.28 – $14.66 (TPO + tear-off + insulation) |
| Total | $60,000 – $180,000 | $145,600 – $293,200 |
| Tear-off and landfill | None | Included |
| Added service life | 10 – 20 years; can be recoated | 20 – 30 years |
| Disruption | Low; building stays open, no open roof | Higher; sections open during work |
Replacement: San Antonio TPO $5.28 – $8.16 (Commercial Roof Guide, Mar 2026) plus Texas tear-off $1.00 – $3.00 and insulation $1.00 – $3.50 (Core Commercial Roofing, 2026).
Coating can also be treated differently for taxes: a restoration is often handled as a repair expense, while a replacement is usually capitalized. Confirm with your CPA.
Warranty Length and How It Changes the Price
Manufacturers set warranty terms by the thickness applied. More coating costs more but buys a longer warranty, so compare bids on cost per year of warranty, not just the total.
| Warranty term (typical) | What changes | Effect on price |
|---|---|---|
| 10 years | Base thickness | Lowest |
| 15 years | More dry mils applied | Higher material and labor |
| 20 years | Maximum thickness, stricter prep and inspection | Highest; best cost per year if the roof qualifies |
Ask whether the warranty covers material only or material and labor, and whether it is issued by the manufacturer or only by the contractor.
When a Roof Is Not a Coating Candidate
Coating money is wasted on a roof that should be replaced. Skip coating and price a replacement if:
- Insulation under the membrane is saturated, since coating would trap the moisture
- The deck is rusted through, rotted or sagging
- More than about 25% of the surface needs repair
- The roof has chronic ponding and the drainage problem won’t be fixed
- The membrane is shrinking, splitting or delaminating across the roof
A moisture survey answers this before you spend. If coating is ruled out, see commercial roof replacement in San Antonio.
FAQs | Roof Coating Cost
How much does it cost to coat a 10,000 sq ft commercial roof?
About $15,000 to $45,000 for a silicone coating, or $30,000 to $90,000 for a full restoration with repairs, seam reinforcement and a manufacturer warranty.
Is silicone more expensive than acrylic?
Yes. Silicone runs about $1.50 to $4.50 per sq ft installed versus $0.50 to $2.00 for acrylic. On flat roofs, silicone is usually worth it because acrylic breaks down where water stands for more than about 48 hours.
How long does a commercial roof coating last for the money?
Most commercial coatings last 10 to 20 years depending on type and thickness. At the end of that period, the roof can usually be cleaned and recoated for less than the first application.
Does a roof coating lower energy bills enough to pay for itself?
A white reflective coating lowers roof surface temperature and the building’s cooling load, which matters in San Antonio’s long summers. Savings depend on insulation, building use and roof size. Treat energy savings as a bonus, not the main reason to coat.
Can I get a rebate for a cool roof coating in San Antonio?
CPS Energy has offered cool roof incentives for commercial customers through its custom program. Programs change and usually require approval before work starts, so check eligibility first.
Why are some coating quotes $2 per sq ft and others $6?
The cheaper quote usually covers coating only, without a moisture survey, wet insulation replacement, seam reinforcement or a manufacturer warranty. Compare the scope line by line and ask for the specified dry-mil thickness.
How many square feet does 5 gallons of roof coating cover?
About 400 sq ft at a typical 20 wet mils (one gallon covers 1,604 sq ft at 1 mil, so 1,604 ÷ 20 × 5). Many warranty specs call for thicker coats, so 5 gallons often covers 250 to 400 sq ft. Your proposal should state the mils, not just the gallons.
Find Out If Your Roof Qualifies for Coating
We’ll inspect the roof, run a moisture check, and tell you plainly whether a coating will work, with pricing for coating and replacement side by side.
- Free roof assessment anywhere in San Antonio, including Westover Hills, Castle Hills and roof coatings in Stone Oak
- Specified thickness and warranty in writing
- Honest answer if your roof isn’t a candidate
Get your free roof coating assessment or explore commercial roof coatings in San Antonio.
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