Offering Premium Roofing Services for Over 20 Years Partner with a trusted local roofing contractor today in Harker Heights, TX Your roof is the first line of defense against damaging wind, rain and hail. For one of the most vital components of your home, you need a roofing contractor you can count on for repairs, installations and replacements. Trust Nova Roof Systems, based in Harker Heights, TX, for quality work at fair and honest prices.