Stone Coat Countertop Calculator
Estimate the epoxy and materials for stone coat countertops.
Quick Answer
Stone Coat epoxy covers about 20 sq ft per gallon as a flood coat. Divide your countertop square footage by 20 for the flood coat, add a seal coat (about 1 gallon per 50 sq ft), and allow extra for edges and drips.
Stone Coat Countertop Calculator Guide
The Stone Coat Countertop Calculator helps you estimate the amount of epoxy resin, hardener, and primer needed for creating stunning stone-effect countertops. Stone coat epoxy systems create durable, seamless surfaces that mimic the look of marble, granite, and other natural stones.
For related projects, check out our stone coat epoxy calculator for other surfaces, the slab weight calculator for natural stone alternatives, or our marble slab calculator for traditional stone countertops.
Get a Glass-Smooth Countertop on the First Pour
Countertop epoxy is unforgiving once it starts to cure, so the right supplies matter more than skill. A countertop-grade epoxy kit gives you a thick, heat- and scratch-resistant coat with resin and hardener already matched, so you're not guessing at ratios. The second essential is a heat gun or torch: a quick pass over the wet surface pops the tiny air bubbles that otherwise cure into permanent cloudy specks. Together they're the difference between a deep, glassy finish and one you'll want to sand back and redo.
Stone Coat Epoxy Kit
Countertop-grade resin and hardener, pre-matched for a thick, heat-resistant coat.
Check Price on AmazonHeat Gun / Torch
A quick pass pops air bubbles before they cure into permanent cloudy specks.
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Frequently Asked Questions
How much epoxy do I need for a countertop?
For a seal coat, plan for 4 sq ft per mixed ounce. For a flood coat (1/8 inch thick), plan for 1 sq ft per mixed ounce. Most countertops need 2-3 coats total. Add 10% extra for waste and edges.
How many square feet does 1 gallon of epoxy cover?
One gallon of epoxy (128 oz mixed) covers approximately 12-16 square feet at 1/8 inch thickness, or 48-64 square feet as a thin seal coat. Coverage varies by brand and application technique.
What's included in a stone coat epoxy kit?
Typical kits include epoxy resin, hardener, primer, metallic powders or pigments, mixing supplies, and application tools. Some kits include practice materials and detailed instructions.
How thick should epoxy countertops be?
Most epoxy countertops have a total thickness of 1/8 to 1/4 inch over the base substrate. This typically requires 2-3 flood coats, with 24 hours between coats.
Can I apply stone coat epoxy over existing countertops?
Yes, epoxy can be applied over laminate, wood, concrete, and tile countertops with proper preparation. Surfaces must be clean, lightly sanded, and primed for best adhesion.