Grennan Construction

About Grennan Construction

With a reputation for honesty and integrity, Grennan Construction is the leading roofing and siding contractor in Oakland County. It has served the local communities since 1998, delivering first-class craftsmanship and attention to detail in every project. Whether it’s small repairs or complete replacements, it is committed to providing reliable and durable solutions. Grennan also offers a range of other services, including gutter and window installation, masonry work, and hail and wind damage repair. It ensures that all aspects of the job are executed according to plan so that the desired outcome is achieved efficiently and effectively. Grennan Construction is a family-owned and operated business based in Pontiac, MI. It is a CertainTeed SELECT Shingle Master and a James Hardie Elite Preferred Contractor, one of only seven companies holding that distinction in the entire state. Call now for a free estimate.