EpoxyGrindReview
Stone Coat Flooring Epoxy Midcoat Review
A zero-VOC metallic-capable midcoat sold as one project-sized bundle rather than a la carte components.
Best for a metallic finish without assembling a system yourself
One bundled 15-gallon project kit with pigment included, from a brand that built its name on countertop-grade epoxy — but it's sized for larger jobs and the price isn't published, so it's not the cheapest way into a small garage.
What's in the box
Stone Coat sells this as a 15-gallon project kit bundled with 15 bags of their PolyColor metallic pigment powder — you're buying a sized system, not assembling one from separate SKUs. It's zero-VOC and mixes at a 2:1 ratio (resin to hardener), which is simpler to get right by volume than an odd ratio like 3:1 or 4:1. Stone Coat is better known for countertop epoxy, and this flooring midcoat carries over that same finish quality into a floor-scaled product, which is part of why it shows up frequently in metallic-floor project videos.
Real coverage math
The 15-gallon bundle is sized as a project kit rather than sold in granular sq-ft increments the way some competitors do — plan your square footage against the full 15 gallons rather than expecting a smaller trial size. The site did not have a confirmed current price at the time of writing (automated price checks were blocked), so get a firm number directly from Stone Coat before budgeting against other kits in this roundup.
Application walkthrough
Mix at the 2:1 resin-to-hardener ratio and expect roughly a 70-minute working time before the batch starts kicking — plan your pour in sections sized to what you can actually work (including any metallic pigment manipulation) inside that window, not the whole floor at once. Cure runs 3-7 days to full hardness, which is longer than some competing systems and worth factoring into a project timeline, especially if the space needs to go back into use quickly. Because it's zero-VOC, ventilation requirements are lighter than solvent-based systems, which matters if you're coating an attached garage or basement.
Pros
- Zero-VOC formulation — easier to work with in an attached garage or basement than solvent-heavy systems
- Simple 2:1 mix ratio reduces a common DIY measuring mistake
- Bundled pigment means no separate metallic-powder purchase or color-matching guesswork
Cons
- Price not confirmed at time of writing — automated price checks were blocked, so get a current number before comparing cost
- 3-7 day full cure is longer than several competing systems — plan the timeline accordingly
- Sold as one 15-gallon bundle, not broken into smaller project sizes, so it's less of a fit for a small single-bay job
Alternatives
- Leggari Custom Epoxy Floor Kit — more color/finish customization if you want a specific configured look rather than a fixed bundle
- ArmorPoxy ArmorClad Epoxy Floor Kit — sold in smaller fixed sizes (300 sq ft and up) if 15 gallons is more product than your space needs
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FAQ
What's the mix ratio?
2:1, resin to hardener by volume — simpler to measure correctly than some competing systems that use an odd ratio.
How long do I have to work with it once mixed?
Roughly 70 minutes of working time before the batch begins to kick — plan your pour sections to fit inside that window, including time to manipulate metallic pigment if you're using it.
Is this the same company that makes countertop epoxy?
Yes — Stone Coat is primarily known for countertop-grade epoxy, and this flooring midcoat is their floor-scaled product built on the same finish-quality reputation.
How long until the floor is fully cured?
3-7 days to full cure, longer than several competing systems — factor that into your project timeline if the space needs to go back into daily use quickly.