Stone Coat Countertops
Art Coat Epoxy
- Type
- Tabletop / coating
- Data sheet revision
- Revision Date: 12/12/2023
- Sources checked
- 2026-09-30
- Page status
- Published October 3, 2026
A 1:1 coating epoxy that Stone Coat positions for marble-look countertop finishes. Its data sheet lists a maximum casting thickness of 0.25 in but recommends no more than 1/8 in per application, and gives 55 to 75 minutes of working time and 14 to 24 hours between coats.
Published values
Copied as printed, with test conditions where the manufacturer gives them. Tags link to the source document.
| Mix ratio by volume (A:B) | 1 Resin : 1 HardenerTDS |
|---|---|
| Mix ratio by weight (A:B) | 100 R : 90 HTDS |
| Maximum pour depth per layer | .25 inchTDSTDS 'Maximum Casting Thickness'; the same TDS also recommends no more than 1/8" per application (see conflicts) |
|---|---|
| Minimum pour depth | not published |
| Maximum mass or volume per pour | 3 gallonsTDSmaximum batch mixed at one time (TDS); product page states max batch size 1 gallon (see conflicts) |
| Recommended temperature | 65-75°FTDSideal working temperature; keep above 65°F for first 48 h of curing |
| Pot life | not published |
|---|---|
| Working time | 55-75 minutesTDSno test temperature or mass printed; product page says 45 minutes (see conflicts) |
| Time between pours | 14-24 hoursTDSnext coat without sanding; after a 24 h cure lightly sand with 220 grit first |
| Recoat window | 14-24 hoursTDSrecoat without sanding; after 24 h lightly sand with 220 grit and wipe the dust |
| Tack-free | not published |
| Demold | not published |
| Full cure | 7 daysTDS'Total Cure Time' in TDS table; TDS text and product page give other figures (see conflicts) |
| Mixed viscosity | 1800 cpsTDSno test temperature printed |
|---|---|
| Specific gravity or density, Part A | 1.16SDS A |
| Specific gravity or density, Part B | 0.98SDS B |
| Specific gravity, mixed | not published |
| Density, mixed | not published |
| Hardness | D78TDS |
What the numbers mean for a pour
Automatic planning is suspended for this product: its documents give more than one depth limit (1/8 in, 1/4 in) for different applications or sources, and we do not choose between them. Read the published wording and enter the limit that fits your project in the layer planner.
What the manufacturer says
Paraphrased from the manufacturer’s documents.
Intended use
- Stone Coat pitches Art Coat for light-toned marble, granite and quartz countertop finishes as well as art pieces like geodes, ocean pours, coasters and tumblers.Page
UV and color
- Stone Coat says its countertop epoxies use HALS light stabilizers but warns all epoxies can amber over time, especially light colors in direct sun.Page
- The TDS describes Art Coat as having added UV inhibitors for maximum resistance.TDS
Coverage
- At 3 oz per square foot for a color coat plus a clear coat, a 1-gallon kit covers 20 sq ft (1/2 gal = 10, 2 gal = 40, 4 gal = 80).TDS
- The product page gives application rates of 2-3 oz per sq ft for a clear flood coat and 4-6 oz per sq ft for a dirty pour.Page
Surface preparation
- Porous substrates such as live-edge wood or concrete may need a thin seal coat at about 1 oz of mixed epoxy per square foot.TDS
Temperature
- Keep the room above 65°F for the first 48 hours of cure; high humidity slightly shortens working time.TDS
Heat
- The TDS lists a heat deflection temperature of 130°F.TDS
- The product page claims the cured coating can briefly withstand up to 450°F but still advises a trivet or hot pad.Page
- Applying thicker than the maximum recommended thickness can cause warping and possibly a fire because the cure is exothermic.TDS
Other notes
- The product page gives a 12-month unopened shelf life and asks that opened product be used within 6 months.Page
Safety data sheet summary
Signal word: DangerSDS B
Part A hazard statements
- H315 Causes skin irritation
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H373 May cause damage to organs through prolonged or repeated exposure
- H401 Toxic to aquatic life
- H411 Toxic to aquatic life with long lasting effects
Part B hazard statements
- H302 Harmful if swallowed
- H312 Harmful in contact with skin
- H315 Causes skin irritation
- H318 Causes serious eye damage
- H361 Suspected of damaging fertility or the unborn child
- H401 Toxic to aquatic life
- H411 Toxic to aquatic life with long lasting effects
Protective equipment
- Wear impervious gloves such as butyl or nitrile rubber.
- Wear chemical safety glasses or goggles when handling the resin.
- Wear chemical safety goggles or a face shield and impervious clothing when handling the hardener.
- Use an approved organic-vapor respirator if needed, and a supplied-air respirator for high exposures or emergencies.
Ventilation
- Use the resin with adequate general or local exhaust ventilation to keep exposure low.
- Use the hardener with properly positioned local exhaust ventilation to stay below occupational exposure limits.
A summary, not the full SDS. Read the SDS for both parts before use and follow its first-aid section in case of exposure. This is not medical advice.
Where the manufacturer’s documents disagree
- Working time: 55-75 minutes (TDS table and Step 5) vs. Work Time: 45 minutes (product page) (TDS, Page). The table shows the value from the TDS.
- Full cure: Total Cure Time 7 days (TDS table) vs. Full cure and maximum hardness can require up to 3 days (TDS Step 5) vs. Full Cure: 30 days (product page) (TDS, TDS, Page). The table shows the value from the TDS.
- Maximum pour depth per layer: Maximum Casting Thickness .25 inch (TDS table) vs. We recommend pouring no more than 1/8" per application, depending on mass poured (TDS Step 3) (TDS, TDS). Both statements are in the TDS; the table shows “.25 inch”.
- Maximum mass or volume per pour: Do not mix more than 3 gallons at one time (TDS) vs. Max Batch Size: 1 gallon (128 oz) (product page) (TDS, Page). The table shows the value from the TDS.
- Recommended temperature: ideal working temperature around 65-75°F (TDS) vs. Application Conditions: 68–75°F and 55–65% relative humidity (product page) (TDS, Page). The table shows the value from the TDS.
- Recoat window: ready for another coat in 14-24 hours with no need to sand (TDS) vs. Sand/Topcoat: After 24 hours (product page) (TDS, Page). The table shows the value from the TDS.
Not published
The documents listed below give no value for: Minimum pour depth; Pot life; Tack-free; Demold; Specific gravity, mixed; Density, mixed. We leave these blank rather than estimate them.
Use this product in a calculator
Sources
- Stone Coat Countertops. Art Coat Epoxy Technical Data Sheet (TDS). Document revision: Revision Date: 12/12/2023. Accessed September 30, 2026.
- Stone Coat Countertops. Art Coat Epoxy Resin Safety Data Sheet (Art Coat Resin) (SDS A). Document revision: Date Prepared/Revised: June 25, 2024; Supersedes: November 17, 2021. Accessed September 30, 2026.
- Stone Coat Countertops. Art Coat Epoxy Hardener Safety Data Sheet (Art Coat Hardener) (SDS B). Document revision: Date Prepared/Revised: June 26, 2024; Supersedes: April 28, 2022. Accessed September 30, 2026.
- Stone Coat Countertops. Stone Coat Art Coat Extreme UV Resistant Epoxy for Countertops & Art – Stone Coat Countertops (Page). Accessed September 30, 2026.