We proudly offer a wide range of residential roofing and siding services to Oakland County and the surrounding Southeast Michigan areas


We are a full-service, licensed, and insured residential roofing and siding company serving the Southeast Michigan area for over 20 years. Let our trained residential roofing and siding technicians inspect your roof to give you the answers.

As a fully licensed, bonded, and insured company, Grennan Construction is here to take care of all your residential roofing and siding requirements. We assure you that once hired, we will take care of all your needs without you having to worry about a thing! Even in today’s extremely competitive market, Grennan Construction has come out at the top for providing our clients with excellent services at the most reasonable prices.

Meticulous Planning

Completion On Time


Perfect Execution


Affordable Prices

Exterior remodel with roofing, siding, front porch addition, James Hardie Fiber Cement Siding, stone, and windows. West Bloomfield, Michigan.
Exterior remodel with siding, roofing, and windows.
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Grennan Construction has proven to be a leader within the residential roofing company industry, serving with integrity while offering a range of residential roofing and siding services that meet your needs.


No single home improvement project has such a significant impact on your home as installing a new roof. Regardless of your roofing material, Grennan Construction has the product line and expertise to complete your job correctly, on time, and within your budget. You can rest assured that not only will your home look beautiful, but it will also be fully protected from the elements and will likely increase in value.


Siding does more than simply provide beauty and value to your home. Your choice of siding also greatly impacts your home’s ability to protect you from the elements and from unwanted pests. Many options are available, and the experts at Grennan Construction will consult with you to determine what best matches your tastes and your home’s needs.


Let Grennan Construction help cut your energy costs while increasing both your curbside appeal and the value of your home. Some companies might try to sell you only one brand of windows. At Grennan, we understand each home is unique. We offer many quality window brands and styles to choose from. Our experts have over 12 years of experience helping home owners find the perfect solution for their properties. All of our window installation projects are backed by a full manufacturer’s warranty.


Grennan Construction has found Leaf Relief by PlyGem to be the most effective gutter protection system on the market. Leaf Relief is more effective than other types of gutter protection at keeping natural debris, such as leaves, twigs, and pine needles, from blocking your gutters. We have not only found it to be the most effective gutter protection, but also the most invisible, as it lays flat and fits snugly on top of your gutter.


Hail has the potential to cause hairline cracks and punctures in shingles, which can lead to a devastating outcome, including delamination. If not addressed, these issues can cause problems with the structure and soundness of your home. Grennan Construction specializes in the repair, restoration, and/or replacement of all types of exterior products damaged by Michigan weather.


For expert brick work and tuck pointing anywhere in, on, or around your home, depend on Grennan Construction. In recent years, we have expanded our services to include concrete repair and replacement, stucco repairs, cultured stone veneer, and many other services similarly related to property repair and restoration. We offer expert construction, inspection, and repair of any brick chimney, brick fireplace, brick wall, or other brick structure.




When a roof can account for as much as 40% of the average home’s exterior, many factors weigh into the choice of materials. Some surfaces are more beautiful than others. Some offer greater resilience or endurance. Some are more affordable. But the one roofing surface which offers all those attributes in balance is the asphalt shingle.

Now accounting for about 80% of the residential roof surfacing in the United States, asphalt shingles are measured against a variety of standards that evaluate fire and wind resistance, tear strength, and other key performance indicators.

Asphalt shingles have a glass fiber reinforcing mat manufactured to the shape of the shingle. This mat is then coated with asphalt which contains mineral fillers. The glass fiber mat is not waterproof by itself. Its purpose is for reinforcement. What makes the glass fiber shingle waterproof is the asphalt. However, the asphalt itself will not stick to the mat. For this reason, “fillers” are used. The fillers in the asphalt cling to the glass fibers in the mat. The asphalt then encapsulates the glass fibers, fills all of the little holes and voids in the mat rendering it waterproof. After this cools a bit, adhesive asphalt is used to cover the mat and the ceramic granules are then embedded.

CertainTeed Select ShingleMaster vector logo

Grennan Construction is proud to install shingles from only the highest-quality manufacturers – such as CertainTeed, GAF and Owens Corning. When your roof is on the line – only the best will do.

Example of Grennan Constructions Bronze level roof shingles. Residential roofing company Michigan
Example of Grennan Constructions Silver level roof shingles. Residentail roofing company Michigan.
Example of Grennan Constructions Gold level roof shingles. Residential roofing company Michigan.


The ceramic granules are there for two reasons. The primary reason is to protect the shingles from the sun. The sun’s UV rays are very damaging to asphalt and cause it to deteriorate prematurely. This is one of the reasons that gravel is used on built-up roofs. The second and more obvious reason for the granules is aesthetics. Asphalt shingles are available in a wide variety of colors to match almost any facade or landscape.



“Did a great job helping devise solutions for problems with a 98-year-old historic home. Carpentry & paint skills excellent! Good communicators. Always knew what to expect.”


“I had a masonry job on my late 1920s home and Grennan Construction did an absolutely outstanding job. I would definitely use them again in the future!”


“I’ve used Grennan Construction for repairs and upgrades to my home and business. Fred and his crew have always done a great job at a reasonable price.”

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When is it time to get a new roof?

Here are some of the tell-tale signs that it is time to call Grennan Construction to talk about new residential roofing:

Leakage in attic after wind-driven rain

Possible causes: Leaky or inadequate shingle underlayment or deteriorated flashing

Leakage in attic after ice build-up

Possible causes: Inadequate shingle underlayment or inadequate attic ventilation

Blistering and/or peeling of interior and/or exterior paint

Possible causes: Excessive temperature or high humidity due to inadequate attic ventilation

Stains on interior ceilings and walls or mold and mildew growth

Possible causes: Inadequate or faulty shingle underlayment allowing leakage or inadequate attic ventilation

Residential roofing contractor complete new roof after photo

Proper attic ventilation is crucial to a long-lasting roof system. Poor attic ventilation can ruin your insulation, destroy your shingles, and raise your energy bills!

Most people think replacing their residential roof is simply replacing shingles. However, we want our customers to know better! Today, effective residential roofing relies on advanced material technology and an integrated systems approach to protect your biggest asset – your home.

Leaking Skylight in need of roof replacement
Peeling wallpaper with mold due to water damage
How often to replace roof

Decay of roof shingles, sheathing, and/or siding

Possible cause: Inadequate attic ventilation

Missing, cracked or curled shingles

Possible cause: Shingles have reached the end of their useful life

Dark, “dirty-looking” areas on your roof

Possible causes: Environmental pollutants; vegetation, fungus or algae; loss of granules due to age of shingles

Excessive energy costs

Possible cause: Insufficient attic ventilationIn. In warm weather, inadequate ventilation will trap hot air in the attic, causing air conditioning systems to work harder, or leaving your home’s interior hotter and less comfortable. In both hot and cold weather, insufficient attic ventilation may cause moisture in the attic to become trapped and condense on the rafters. This condensed moisture can drip down onto the insulation and reduce its effectiveness. Excessive energy costs can result.