Certified Home Improvement, serving the Metro Detroit area, offers: FREE estimates, Senior discounts. We remove snow from roofs. Chimney cleaning available. Get your FREE estimate on roofing services, siding and windows or masonry and concrete work. We are fully licensed and insured and EPA Lead Certified. Excalibur windows and Prodigy siding. We also offer up to lifetime warranties on materials and labor. Roofing Services, Siding and Windows, Concrete and Chimneys.