Blue Fractured Granite Epoxy Tutorial

How to Mimic the Look of Fractured Granite with Epoxy 

Before you start:

Whether you’re pouring epoxy over an existing countertop—like tile or laminate—or fabricating a new surface from MDF, each approach has unique preparation steps to ensure maximum adhesion. For detailed instructions, check out our substrate specific tutorials below. This color technique begins with your surface fully prepped and ready for a stunning epoxy transformation. 

Step 1:  Clean and Prep Surface

Sand and smooth any bumps or rough areas, then clean thoroughly to remove all dust and debris. For new MDF countertops, place them on a level surface and apply two coats of Stone Coat Countertop Black Epoxy Undercoat. Allow the second coat to dry for at least 4 hours. This specially formulated, ammonia-free undercoat bonds perfectly with our Countertop Epoxies and substrate materials for the best results (other products may not achieve the same effect). Once the undercoat is dry, lightly sand with 220-grit if needed and clean off any remaining dust. 

Step 2:  Pour Epoxy (Hand Meld Method)

With the undercoat completely dry, mix a batch of Stone Coat Countertop Epoxy (we recommend 3-4 ounces per square foot) and separate into individual containers for tinting the epoxy.  We recommend 1-2 tablespoons of our Polycolor Metallic Pigment Powder per 16 oz of epoxy.   For making a fully opaque color with our White or Black dye, we recommend up to 5-10 drops per 16 oz of epoxy.  Be sure to mix thoroughly including scraping the sides of your mixing container.   For 20 square feet of coverage using 1 gallon of 1:1 Countertop Epoxy we recommend preparing 48 oz of black, 16 oz of dark bronze, 16 oz of white, 16 oz of silver and 16 oz of diamond dust (go lighter on the pigment additive).

Step 3:  Apply Seal Coat of Countertop Epoxy

Seal and protect your design with a clear coat of Stone Coat Countertop Epoxy. When using the Blue Fractured Granite Epoxy Kit, you will have enough leftover Countertop Epoxy for the clear coat at 3 oz per square foot.    

Mix Clear Epoxy: Follow the instructions to mix the clear Stone Coat Countertop Epoxy thoroughly using a drill with a paddle mixer.   

• Measure 3 ounces per square foot of countertops to be covered. Pour in Part B first at a 1:1 ratio by volume, followed by Part A.   
• Mix for 90 seconds with a paddle mixer and drill, scrape the sides and bottom of the mixing bucket with a paint stick. Mix again for an additional 40-90 seconds.   
• Pro Tip: In colder months, warm the epoxy to room temperature before mixing. Place it 3-4 feet from a space heater to gradually warm the material, making mixing easier.  

Pour the Epoxy: Pour the mixed epoxy into the center of your countertop in a large ribbon.  

Evenly Spread the Epoxy & Remove Air Bubbles:  

• Use Stone Coat’s 1/8’’ x 1/8’’ square notch trowel to spread epoxy evenly across the surface.   
• Use Stone Coat’s Chop Brush and dap the surface of the project to remove the subtle trowel lines left behind spreading the material evenly.  
• Ensure full coverage for a smooth, professional finish.  
• Take time to check the surface for any lost brush bristles. Remove them before the epoxy cures.   
• Use a heat source to eliminate air bubbles trapped during epoxy mixing and spreading. A propane torch is recommended for the most efficient bubble removal, but a heat gun works too.  
• Hold the torch head 2” from the surface and sweep it across in a steady motion, covering the entire area. You'll see bubbles popping—slightly overlapping each pass to ensure no bubbles are missed.  

Step 4:  Apply ultimate Top Coat

For maximum durability, we recommend coming back overtop the clear coat of epoxy once cured with a scratch-resistant protective layer of our Ultimate Top Coat. The Ultimate Top Coat will need to be purchased separately to achieve our highest performing finish.  

For high-detailed written instructions, see our Ultimate Top Coat Instructions HERE.

Enjoy your new countertops!   

From all of us here at Stone Coat Countertops,   

You Got This!