Polyaspartic versus epoxy, the honest comparison.

Polyaspartic is a family of aliphatic coatings that cure much faster than traditional epoxy. A floor that would take multiple days to put back in service with an epoxy system can be ready to drive on the same evening with polyaspartic.

What is actually different

• Cure speed. Trade-industry sources put polyaspartic's functional cure at roughly 2 to 4 hours for light foot traffic, against 24 to 72 hours for a traditional epoxy system. If you cannot be without a garage for multiple days, this is the practical choice.
• UV stability. Polyaspartic is cured with an aliphatic isocyanate hardener and resists yellowing under direct sunlight over the long term. A standard epoxy top coat is prone to yellowing where sunlight hits it directly, such as through a south-facing garage window.
• Cold-temperature application. Polyaspartic is commonly formulated to install at meaningfully lower temperatures than epoxy, but the exact minimum varies widely by manufacturer and product line, so no single figure should be treated as universal; the specific product's own data sheet governs the real minimum for a given job. In general terms it can extend the installation window further into spring and fall than a full epoxy system can.
• Cost. No verified Niagara or Ontario figure exists in any authoritative source comparing polyaspartic and epoxy pricing per square foot, so this guide does not state one; get a written estimate for each system before deciding.

What stays exactly the same

The prep. Every polyaspartic job starts with diamond grinding, crack fill, and spall repair, exactly the same as a full epoxy system. The chemistry is different; the commitment to the slab is identical. A polyaspartic coat over a poorly prepped concrete floor will fail the same way an epoxy will.

Is polyaspartic right for your floor?

If you want the job done in one day and you have a window on the south side of the garage, polyaspartic is the stronger choice on cure speed and UV resistance. No verified Niagara or Ontario figure exists in any authoritative source for which system costs less per square foot, so get a written estimate for each before deciding on budget grounds. The honest answer is that both are good coatings when installed over a properly ground slab; the decision turns on your schedule and whether UV resistance is a priority.

A note on installers who skip the grind

Some polyaspartic offers advertise a half-day job with no prep step. Those coatings delaminate. Polyaspartic bonds to concrete the same way epoxy does, it needs an open surface. There is no shortcut. An estimate that does not mention diamond grinding is a signal to ask directly what the prep step will be.

Polyaspartic versus polycuramine, two different things

The two names are close enough to blur together in a search box, but they are not two options in the same category. Polyaspartic, the coating covered throughout this guide, is a chemistry: an aliphatic polyurea system installed by a professional over diamond-ground concrete. Polycuramine is a specific trademarked product, sold as a do-it-yourself kit under the RockSolid brand from Rust-Oleum, at hardware and home-improvement stores. It blends polyurea, urethane, and epoxy into one proprietary coating, a different formulation from either straight epoxy or the professional polyaspartic systems described above.

• Chemistry. Polyaspartic is an aliphatic polyurea coating. Polycuramine is a proprietary blend of polyurea, urethane, and epoxy, a formulation sold under one manufacturer brand name rather than a chemistry category with multiple suppliers.
• Who installs it. The polyaspartic on this page is applied by a professional installer over diamond-ground concrete. Polycuramine kits are made for homeowner application, typically over concrete that has been cleaned and etched rather than diamond-ground.
• Cure time. A polycuramine kit's manufacturer product data is not independently confirmed here, so this guide does not restate a specific figure; check the product's own data sheet before assuming a timeline. Professional polyaspartic reaches functional hardness far faster, roughly 2 to 4 hours for light foot traffic, per trade-industry sources.
• UV resistance. Independent installer write-ups report that polycuramine coatings can still yellow with regular sun exposure, unlike a professional polyaspartic top coat, which holds its colour long-term.
• No verified Niagara or Ontario figure for what this work costs exists in any government, association or other authoritative source, so this guide publishes none. The way to learn what your job costs is a written, itemized quote from a local contractor, and a second one itemized the same way so the two can be compared line by line.

How the two professional systems compare on cost

No verified Niagara or Ontario figure for what this work costs exists in any government, association or other authoritative source, so this guide publishes none. The way to learn what your job costs is a written, itemized quote from a local contractor, and a second one itemized the same way so the two can be compared line by line. If a contractor is quoting a job, polycuramine will not be one of the two systems on the table; it is a retail product for homeowners doing the work themselves, not a third professional-grade option next to epoxy and polyaspartic. See the epoxy systems guide for the full five-step process.