How to Choose the Best Epoxy Garage Floor Contractor in Dallas, TX (A Homeowner’s Vetting Checklist)

Published by Dallas Garage Epoxy Floors | Dallas, TX 75201

The DFW epoxy flooring market has three tiers: national franchise operators with branded trucks and slick marketing, small local crews doing good work quietly, and one-man operations with a pressure washer and a bucket of big-box epoxy paint calling themselves flooring contractors. The problem for Dallas homeowners is that all three tiers look similar from a Google search results page.

This checklist gives you five direct questions that separate a professional installation from one that will fail within two seasons on a North Texas slab. Use these questions on every contractor you’re evaluating — the answers tell you everything you need to know.

Question 1: Do You Diamond Grind or Acid Etch?

The right answer: Diamond grinding.

Surface preparation is the most important step in any epoxy floor installation. The concrete must be opened to a specific surface profile (CSP-2 to CSP-3) so the epoxy can bond mechanically. There are two ways contractors achieve this: diamond grinding and acid etching.

Diamond grinding uses a rotating abrasive head to physically remove the surface layer of concrete, creating a uniform, controlled surface profile. It removes existing coatings, sealers, and contaminants. It produces a consistent result regardless of what was on the floor before. It’s the industry standard.

Acid etching uses muriatic acid to chemically open the concrete pores. It’s faster and cheaper. It doesn’t remove existing sealers or coatings — it just etches around them. It produces inconsistent profiles. And it leaves behind acid residue that, if not completely neutralized, interferes with epoxy adhesion. On North Texas slabs with prior sealers, builder-applied curing compounds, or failed previous coatings — which describes a large percentage of garages in Plano (75023), Frisco (75033), and Carrollton (75006) — acid etching produces inadequate prep and predictable adhesion failures.

If a contractor says acid etching, pass.

Question 2: Do You Test for Moisture Vapor Emission?

The right answer: Yes, with a calcium chloride test.

Moisture vapor emission (MVE) is the rate at which moisture vapor moves through the concrete slab from below. On Dallas’s Blackland Prairie clay-soil slabs — especially in older neighborhoods in Garland (75040), Mesquite (75149), Richardson (75080), and Grand Prairie (75050) — elevated MVE is extremely common. It causes coatings to blister, delaminate, and fail regardless of how good the coating material is.

The calcium chloride test is the industry-standard MVE measurement. A sealed kit is placed on the slab for 60–72 hours. The result tells the contractor whether a standard bonding primer is adequate or whether a vapor-block primer is required. Industry guidelines specify that any slab testing above 3 lbs/1,000 sq ft/24 hr requires a vapor-tolerant primer system.

A contractor who doesn’t test for MVE — or who dismisses it as unnecessary — is planning to skip a critical step. When that floor blisters in 12–18 months, you’ll know why.

Question 3: What Is the Base Coat Material — Is It 100% Solids Epoxy?

The right answer: 100% solids epoxy.

Epoxy products exist on a spectrum from 100% solids (professional grade) down to water-based one-part products (hardware store grade). The percentage refers to how much of the product remains on the floor after the liquid carrier evaporates. A 100% solids epoxy puts all of its material into the coating — you get full mil thickness, maximum bond strength, and a dense, impermeable surface. A 50% solids product puts half its material on the floor and lets the rest evaporate — the film is thinner, the bond is weaker, and it fails faster under vehicle traffic.

Big-box “epoxy” paint kits are typically 30–50% solids water-based products. They are not the same as professional 100% solids epoxy. They fail under hot-tire pickup (a significant issue in Dallas’s 100°F+ summers), they blister on MVE-elevated slabs, and they chalk in UV — sometimes within a single Texas summer.

Ask for the product data sheet for the base coat material. A professional contractor will provide it without hesitation.

Question 4: Is the Topcoat UV-Stable Polyaspartic?

The right answer: UV-stable aliphatic polyaspartic.

Standard epoxy resins are aromatic compounds — they degrade under UV light, yellowing and chalking within 2–3 seasons of sun exposure. This matters enormously in Dallas, where garage doors face south or west on many DFW neighborhood grid orientations and admit intense afternoon sun. A standard epoxy clear topcoat on a Dallas garage floor looks dull and chalky within 2 years regardless of how well the base coat was installed.

Aliphatic polyaspartic is UV-stable by its molecular structure — it doesn’t degrade under sustained UV exposure. It also cures faster than epoxy and tolerates the high-temperature application conditions common in Dallas summers. For any garage floor in the DFW Sun Belt, it is the correct topcoat material.

Ask specifically: “Is your topcoat UV-stable aliphatic polyaspartic?” A contractor using standard aromatic epoxy clear may not volunteer the distinction.

Question 5: Is the Warranty Written, Itemized, and Transferable?

The right answer: Yes to all three.

A verbal warranty means nothing. A warranty that says “we’ll come back if there’s a problem” with no defined terms means very little. A professional contractor issues a written warranty certificate at project close that specifies what is covered, what is explicitly not covered, the term of coverage, and whether the warranty transfers to subsequent homeowners.

Transferability matters in the DFW real estate market. Frisco (75033) and Plano (75023) homeowners frequently sell within 5–10 years of completing upgrades. A transferable warranty is a selling point that can be included in the disclosure documents and mentioned in the listing. A warranty that voids at sale is worth much less.

The explicit exclusions in the written warranty also tell you a lot about the contractor’s honesty. A contractor who lists reasonable exclusions (chemical spills left for more than 24 hours, physical impact damage) is being transparent. A contractor with no exclusions is either careless about the warranty language or planning not to honor it.

Red Flags to Watch For

• Phone quotes without a site visit. Any contractor who quotes you without seeing the slab is making assumptions about slab condition, square footage, existing coatings, and MVE — all of which affect the real price. Phone quotes are either padded to cover unknowns or will come with add-on charges on install day.
• Same-day scheduling. A legitimate crew needs equipment (a planetary diamond grinder weighs 300+ lbs) and a scheduled window. A contractor who can come tomorrow with a pressure washer is not doing professional prep.
• No mention of MVE testing. In North Texas, this is the tell. Any experienced DFW epoxy installer knows that clay-soil slabs require MVE testing. If it’s not part of their standard process, they’re cutting a corner that will cost you later.
• No written quote. A contractor who won’t put the quote in writing won’t put the warranty in writing either.
• National franchise with call center. Some national franchise operators do good work; others are territory licenses sold to operators who may not have deep DFW-specific experience. Ask the same five questions regardless of how slick the branding is.

What Not to Do

Don’t choose based on the lowest quote you receive without asking these five questions. A quote that looks low because it skips MVE testing, uses acid etching, and applies a 50% solids water-based product will produce a floor that fails — and the re-installation cost will exceed what you would have paid to do it right the first time.

Don’t install a big-box one-part epoxy kit on a Dallas slab that hasn’t been diamond ground and moisture-tested. The failure rate of these kits on DFW clay-soil slabs is very high, and the most common result is a floor that looks reasonable for 6–12 months and then begins to peel in the tire contact zones.

Dallas-Specific Considerations

DFW’s climate creates two contractor-differentiating scenarios that are worth specifically asking about: hot-tire pickup resistance (the polyaspartic topcoat is the answer) and MVE on clay-soil slabs (the vapor-block primer is the answer). A contractor who gives you fluent, confident answers to both — including the specific product names they use and why — has worked on enough North Texas slabs to be trusted with yours.

Richardson (75080) and Garland (75040) homeowners with 50+ year old slabs should specifically ask: “What do you do when you find high MVE on an older slab?” The right answer involves a vapor-block primer. Frisco (75033) homeowners with new construction should ask: “What do you do when you find a builder sealer on a new slab?” The right answer involves additional diamond grinding passes to remove it.

The Bottom Line

Five questions. That’s all it takes to separate a professional epoxy floor installer from one who will leave you with a floor that fails in two seasons. Diamond grinding, MVE testing, 100% solids base coat, UV-stable polyaspartic topcoat, written transferable warranty. Any contractor who answers all five correctly — with specific product names and process details, not vague reassurances — is worth a written quote.

Dallas Garage Epoxy Floors answers all five correctly on every job. Call (469) 564-4886 for a free on-site estimate anywhere in DFW.