Name: Diamond Valley Painting. Descripton: Garage door special. $175 for a Double car garage door any color.$225 for a Double and a single. Includes Paint. Discounts for referrals. Epoxy coating on floors A standard Double car garage $1,000.00 for two coats of epoxy, One color.$1,500.00 For two coats of epoxy, Chips and then one coat of clear.