Kelly Construction employs a top-notch team of exterior contractors in Thornton, CO. We bring more than three decades of exterior home improvement experience to every job. We can install energy-efficient windows throughout your home, repair your roof with durable new shingles or replace your old, battered siding with new textured siding. We can also switch out your old gutters for a new seamless gutter system. We are accredited by the BBB and guarantee exceptional workmanship. Call 303-457-1960 today to request a free estimate from our exterior contractors in Thornton, CO.