HI! If you want your contractor to install a custom color of James Hardie Fiber cement, just let them know! A knowledgeable contractor has a relationship with the distributor of the fiber cement siding. The project is ordered to spec as a Primed order. The siding comes primed from James Hardie and sent to a pre-finisher where at least 2 coats of your color is applied and cured. Then the siding is sent to the job site for your contractor. Using a Preferred James Hardie installer like Opal Enterprises will ensure your custom color siding project goes smoothly!

what would be the ball park up charge on a custom color order per sq foot

Hi Carla, generally speaking custom coloring for new James Hardie siding is an up-charge of about 20% above the siding quote in the ColorPlus line. Let me know if you would like Opal to quote your home's new siding!