About Ultimate Exteriors of Colorado
James Hardie Siding has named Ultimate Exteriors of Colorado as the #1 siding company in the U.S. for quality workmanship. That recognition matters because James Hardie's fiber cement products are the best in the business, with superior fire, rot, warp and termite resistance, and extraordinary warranties. We are a residential siding specialist dedicated to giving our customers the best and longest-lasting results.