Roofing Giant is a leading Dallas roofing company built on the highest engineering and construction standards. We provide excellent quality roofing. Roofing Giant is a subsidiary of a general contractor Construction Giant, Inc. See what others are saying about us here. We are certified and fully insured with a $2 million liability policy. With roofing professionals on our team who have over 25 years experience in all areas of roofing services, you can count on Roofing Giant for on time and reliable service.