Which Roofing & Siding Contractor Should You Choose in Pontiac, MI?

Grennan Construction is a trusted Oakland County roofing and siding contractor serving Southeast Michigan since 1998. We specialize in residential exterior remodeling, offering expert installation of roofs, siding, windows, and gutters with a focus on quality materials and exceptional customer service. Our James Hardie Elite and CertainTeed-certified team delivers durable solutions that enhance home value while prioritizing transparency and community trust.