Frisco has a lot of offices, retail centers, medical buildings and warehouses with low-slope roofs that are getting old but aren’t failing everywhere. For many of those, a roof coating is worth pricing before a full tear-off. One of the coating brands owners and property managers see on bids is Tropical Roofing Products (TRP), now sold as SOPREMA.
I’m Blake Snow. I’ve been roofing for 30 years, and we’re certified with Tropical Roofing Products. Here’s what changed with the brand, how the silicone and acrylic lines differ, and the thickness numbers that decide how long a warranty can run, all from SOPREMA’s own documents.
Tropical is now SOPREMA (same coatings, new labels)
On October 16, 2025, SOPREMA US announced the full transition of Tropical Roofing Products to the SOPREMA brand, to be completed by the end of 2025. SOPREMA said customers would get the same products, with only packaging and branding changing.
SOPREMA’s TRP to SOPREMA FAQ answers the question owners ask first: “Are TRP products being discontinued?” No. The SKUs were renumbered, and SOPREMA notes that some TRP SKUs were consolidated. So if your roof was coated with TRP Eterna-Sil years ago, the product you’d recoat with today is in a SOPREMA bucket.
The silicone line: 924 and 923 Eterna-Sil
924 Eterna-Sil Premium Roof Coating. From SOPREMA’s 924 product data sheet and coatings brochure:
| Item | SOPREMA’s published value |
|---|---|
| Type | Solvent-free, 100% silicone, single-component, moisture-cured |
| Solids | 96% by volume and by weight |
| Max VOC | 50 g/L |
| Tensile / elongation | 240 psi / 270% |
| Minimum rate | 1.5 gal per 100 sq ft (minimum 23 mils dry, per the data sheet) |
| Single-pass max | Up to 2.5 gal per square |
| Primer | Primeless over most substrates (adhesion testing still advised) |
| Substrates | Metal, concrete, spray foam, single-ply, BUR and mod bit |
| Colors | White, Light Gray, Dark Gray, Reflective Tan, Santa Fe, Safety Yellow |
| Don’t apply | Below 40°F, or if rain is expected during or within 1 hour after |
SOPREMA describes 924 as vapor permeable with resistance to ponding water, and recoatable over itself and existing silicone.
923 Eterna-Sil Roof Coating is the solvent-based silicone. SOPREMA’s brochure lists a minimum of 1.6 gal per 100 sq ft, up to 3.0 gal per square in a single pass, white only, and says it requires 996 Asphalt Bleed Blocker.
Over asphalt roofs (smooth BUR, APP, SBS, mineral cap sheet), SOPREMA’s brochure notes that 996 Asphalt Bleed Blocker is required for 924 too unless SOPREMA Technical Services signs off, and that only white coatings are permitted over asphaltic substrates. That’s an easy detail for a bid to skip.
The acrylic line: 911, 921 and 901
SOPREMA also sells former TRP acrylic coatings, including 911 Premium Elastomeric (100% acrylic), 921 Reflex Elastomeric and 901 High Solids Elastomeric. Acrylics are water-based and usually cost less per gallon, but they need a lot more material for the same warranty term (see below), and they’re best on roofs that drain well. On Frisco roofs that hold any water after a rain, I lean toward silicone.
For a broader comparison, see our silicone coating and acrylic coating pages and our TPO vs. modified bitumen vs. coating guide.
The thickness behind the warranty term
This is the part that separates bids. SOPREMA’s Standard Labor and Material Roof Coating Warranty (Form C100), dated 09/2026, sets minimum coating amounts for each term:
| Coating | 10-year | 15-year | 20-year |
|---|---|---|---|
| 924 Eterna-Sil Premium | 1.5 gal/sq, 22 mils dry | 2.0 gal/sq, 30 mils | 2.5 gal/sq, 38 mils |
| 923 Eterna-Sil | 1.9 gal/sq, 22 mils dry | 2.6 gal/sq, 30 mils | 3.3 gal/sq, 38 mils |
| 911 Premium Elastomeric (acrylic) | 3.0 gal/sq, 24 mils dry | 4.0 gal/sq, 32 mils | 5.0 gal/sq, 40 mils |
| 901 High Solids (acrylic) | 3.0 gal/sq, 26 mils dry | 4.0 gal/sq, 35 mils | 5.0 gal/sq, 44 mils |
A “square” is 100 square feet. These are minimums. Corrugated and ribbed metal roofs need extra material for the surface profile, and the brochure says that’s normally 15% to 40% more.
Ask every bidder: which coating, how many gallons per square, what dry mil thickness, and which warranty form and term. If a bid says “20-year silicone” but prices 1.5 gallons per square of 924, the numbers don’t match SOPREMA’s chart.
How the labor and material warranty pays out
Per Form C100:
- First 2 years: SOPREMA provides coating material, and the installing contractor provides labor to fix leaks caused by a manufacturing defect in the coating.
- After 2 years: SOPREMA provides material and reimburses a SOPREMA-authorized contractor for the labor.
- Claims must be submitted within 30 days after a leak is discovered, with photos, your maintenance log and the warranty number.
- Transfers to a new building owner are allowed if requested in writing within 6 months of the sale, with SOPREMA’s transfer fee and any needed repairs.
SOPREMA also has a separate material-only Limited Warranty for Roof Coating Products (Form RC115): 10 years from purchase against manufacturing defects in SOPREMA and Tropical Roofing Products branded products, limited to replacement product or a refund of the product price. That one doesn’t cover labor.
What the coating warranty doesn’t cover
Form C100 lists examples outside its scope, including:
- Leaks from the existing roof, deck, insulation, membranes or flashings under the coating
- Hail, wind, lightning, fire, flood, tornado and similar events
- Lack of positive slope or inadequate drainage
- Coating applied over substrates that weren’t properly cleaned, prepared or primed
- Condensation under the coating, excessive foot traffic and rooftop storage
For hail-related claims, SOPREMA’s claim procedure asks for a signed and sealed report from a licensed professional engineer. Plan on hail being an insurance matter, not a coating warranty matter.
When a coating makes sense on a Frisco building (and when it doesn’t)
Good candidates:
- Metal roofs with rusting fasteners and leaking laps, where the panels are still sound (see metal roof coatings)
- Aging TPO, mod bit or BUR roofs with dry insulation and a few problem areas
- Spray foam roofs that need a new protective topcoat (see spray foam roofing)
Poor candidates:
- Roofs with wet insulation over large areas. Coating traps the problem.
- Roofs with widespread hail damage that hasn’t been claimed yet. Coating can hide the evidence.
- Roofs with real drainage problems that nobody plans to fix.
How we bid a Tropical / SOPREMA coating job
- Moisture check and core cuts to find wet insulation before we recommend coating at all.
- Adhesion test patches, as SOPREMA advises, to confirm whether primer or bleed blocker is needed.
- Repairs first: seams, fasteners, flashings and drains with the matching SOPREMA mastics, plus reinforcing fabric where specified.
- A written spec: coating name, gallons per square, dry mils, and the warranty form and term, confirmed with SOPREMA for registration before we put it in writing.
- Mil checks and a free digital photo report at closeout.
On commercial roofs we offer both 10-year and 20-year NDL warranty options depending on the system, and our workmanship warranty runs from 10 years up to lifetime, depending on the job. More on our Frisco commercial roofing and commercial roof coatings pages.
After a storm
Get the roof inspected and the damage documented before anyone coats over it. Our commercial hail claims page covers what to record. In Texas you generally have 1 year from the date of loss to file a claim, but check your policy.
Talk to us about coating a Frisco roof
We coat and restore commercial roofs across Frisco, Prosper, Plano, McKinney and Allen. We’re certified with GAF, CertainTeed, Owens Corning, Atlas, Johns Manville, Carlisle, Tropical Roofing Products, Mule-Hide and Enviroshake, and many other roof manufacturers. We’re BBB A+ rated, with 5.0 stars on Google at all three offices: Bridgeport, Decatur and Rhome. Request a free inspection or call (817) 733-9228.
