Every company tells you the other system is obsolete.

Where the Argument Actually Comes From

A company that installs one system has to explain why it is the only one worth having. That is a commercial position and it is not the same thing as a technical fact.

Most coating companies carry one system

Buying, storing and training on a single product line is cheaper and simpler, and there is nothing wrong with it. It does mean that when your room would suit the other material, the answer you get is still the one they carry.

So the pitch has to be a comparison

If a company only installs polyaspartic, epoxy has to be the old thing. If a company only installs epoxy, polyaspartic has to be the expensive thing. You are hearing the product range, not the floor.

The claims are usually true and incomplete

Polyaspartic really does cure faster and hold its colour better in sunlight. Epoxy really is thicker built and costs less to buy. Both sentences are correct. Neither one on its own tells you what belongs in your garage.

The Differences That Are Real

Four of them matter to you. The rest is marketing.

Cure time, and what you do with your garage

Polyaspartic cures in hours where epoxy wants days. If you need the room back tomorrow that is the whole decision, and it is the main reason we reach for it.

Temperature, which in Connecticut is a season not a detail

Epoxy gets unreliable as your slab cools. Polyaspartic keeps curing lower down the range, which is why a November job is a specification question rather than a yes or no. We cover that properly in the winter post.

Sunlight, if your floor sees any

Clear epoxy ambers under UV. That matters in a room with daylight and does not matter in a basement with none. If your garage door stands open all summer it is worth paying attention to.

What it costs

The cost page sets out what moves the number: the area, the system and the state of the slab. Read that before anybody tells you what a floor costs.

The Thing Nobody Argues About, Which Is the One That Decides It

Both materials fail the same way over a slab that was not prepared, and preparation is most of what you are paying for.

Preparation is the majority of the job

Grinding, crack repair and profiling take the time and the skill. A premium system over a slab that was not ground is a worse floor than a modest system over one that was.

Moisture beats every product on the market

If your slab is passing moisture up from the ground, the coating lifts. It does not matter which one you bought. Run the plastic sheet test before you take quotes, because it costs you nothing and it changes what any of us should be quoting.

This is why the comparison argument is a distraction

By the time two companies are arguing about resin chemistry, neither of them has told you what is wrong with your concrete. We would rather start there. Ask us that question first and the quotes get easier to read.

How to Read Three Quotes Without a Chemistry Degree

You do not need to settle the argument. You need to find out who looked at your floor. We would rather be judged on that than on which resin we carry.

Ask what they found on your slab

Cracks, pitting, previous coating, moisture. A company that can describe your floor back to you has looked at it. We read yours before we price it, and a company that prices your job from the driveway has not.

Ask what preparation is included, in words

Grinding is not the same as etching, and one line item saying prep is not an answer. This is where the difference between two prices usually lives.

Ask why they chose that system for your room

The answer should mention your slab, your temperature or your light. If the answer is that the other system is obsolete, you have learned what they carry and nothing about your floor.