What Should Be in Your Epoxy Flooring Contract: A Complete Checklist

Handshake deals and one-page quotes are how homeowners end up with half-finished garage floors and contractors who stop answering their phones. It’s not a rare scenario — the BBB processed over 1,200 complaints against flooring contractors in a recent 12-month period, and the phrase “verbal agreement only” appears in the majority of those cases.

A proper written contract doesn’t mean you distrust the contractor. It means both of you are clear on exactly what was promised, what was paid for, and what happens if something goes wrong. Any contractor worth hiring has signed hundreds of these. It shouldn’t be a negotiation to get one.

Here’s everything that should be in writing before you put pen to paper.

Project Scope and Measurements

The contract should state clearly what area is being coated, measured in square feet. Not “the garage floor” — actual square footage. This matters because contractors sometimes quote based on estimated square footage, then bill for actual measured square footage, and the numbers don’t match.

If there are areas that are explicitly excluded — drains, expansion joints that will be left exposed, wall bases — those should be listed too. Ambiguity here creates disputes at billing time.

What to look for: A specific square footage number and a description of the area (e.g., “2-car garage floor, approximately 480 sq ft, excluding floor drain and wall perimeter within 2 inches of baseboard”).

Materials Specification

This is the section most homeowners skip and most contractors write vaguely. It should specify:

• Product manufacturer and product name (e.g., Sherwin-Williams ArmorSeal 1000 HS, not just “professional epoxy”)
• Solids content percentage (100% solids is the professional standard)
• Number of coats and what each coat is (primer, color coat, topcoat)
• Color and flake type if applicable, including approximate flake size and broadcast density
• Topcoat type — whether it’s a standard epoxy clear, polyaspartic, or polyurethane

Without this language, you have no recourse if the contractor uses cheaper materials than quoted.

Surface Preparation Method

This is arguably the most important section in the contract — and it’s the one most often left vague or omitted entirely.

The contract should specify:

• The mechanical prep method (diamond grinding, shot blasting, or — if this appears — acid etching, which should prompt a direct conversation about quality expectations)
• The target concrete surface profile (CSP). Professional epoxy requires CSP 2–4. Your contract should reference the ICRI (International Concrete Repair Institute) CSP scale.
• How cracks and spalling will be addressed — product used, repair method
• Whether a moisture test will be conducted and how it will be documented

If the prep section says nothing more than “clean and prepare floor,” that’s not a spec — it’s a placeholder that lets the contractor do whatever they want.

Film Thickness and Number of Coats

Specify the expected film thickness in mils for each coat:

• Primer/sealer coat: 3–6 mils
• Color/base coat: 8–15 mils
• Clear topcoat: 3–6 mils
• Minimum total system: 15–22 mils

Some contracts express this as DFT (dry film thickness) — both are fine. What matters is that there’s a measurable number you can verify with a mil gauge if you’re ever in a dispute situation.

Project Timeline

The contract needs actual dates:

• Start date: when work begins
• Estimated completion date: when the floor coating is applied
• Cure timeline: when you can walk on it, park vehicles, and resume normal use

“We’ll start soon” is not a timeline. Neither is “a few days.” Get specific dates, and include a clause about what happens if the contractor significantly misses the start date — typically giving you the right to cancel and receive your deposit back.

Payment Schedule

Never pay 100% upfront. The industry standard for a legitimate residential epoxy project:

• Deposit (25–40%): due at signing, covers materials
• Progress payment (optional, for larger projects): tied to a specific milestone like prep completion
• Final payment: due after completion and your walkthrough sign-off

The final payment trigger matters: it should specifically be tied to your inspection and approval, not just “when work is complete” as determined by the contractor. Your sign-off is what releases the final payment.

Warranty Terms

The warranty should appear in the contract body — not as a separate document you haven’t read, and not as a verbal promise. Minimum required detail:

• Duration (years) and what it covers
• What specifically voids the warranty
• Who performs warranty work
• How to file a claim and expected response time

For a complete breakdown of what real vs. paper warranties look like, see our epoxy flooring warranty guide.

Site Protection and Cleanup

Who’s responsible for protecting adjacent surfaces — walls, cabinets, vehicles in the garage? What happens if coating splashes on a car? How is debris from diamond grinding contained and removed?

A professional contractor will have standard language for this. If they haven’t included it, add it: “Contractor is responsible for protecting all surfaces not specified for coating, containing diamond grinding dust, and leaving the work area in clean condition upon completion.”

Change Order Process

Changes happen. You decide you want flakes added. The contractor finds a problem during prep that requires additional repair work. Any change to the project scope, timeline, or cost should require a written change order signed by both parties before the work proceeds.

Without this clause, “we had to do extra prep” becomes a verbal justification for a higher final bill that you’re stuck negotiating.

Dispute Resolution Clause

If something goes wrong and you can’t resolve it directly, what’s the process? Options include:

• Mediation (neutral third party helps both sides reach agreement)
• Binding arbitration (neutral arbitrator makes a final decision)
• Small claims court (for disputes under your state’s limit, typically $5,000–$10,000)

Having a defined process in writing is better than nothing. It reduces the likelihood that a dispute escalates to expensive litigation, and it signals that the contractor has thought through post-job accountability.

Before You Sign

Go through this list item by item. If something is missing, ask for it to be added. A legitimate contractor won’t refuse — they’ve done this before and they understand the business reason for clear documentation.

If a contractor says “we don’t do contracts like that” or offers a one-page quote and calls it a contract, treat that as a significant red flag. You’re spending several thousand dollars on a floor that should last a decade. It deserves a proper agreement.

For more on evaluating contractors, see our guides on questions to ask every epoxy contractor and red flags that should stop a conversation.