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.
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.
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.”
Join over 3.5K Oakland County residents by signing up for our informative, monthly newsletter.
Since 1988 we have been serving our community by providing the best residential roofing and siding services in Oakland County, Michigan. Today, sign up to receive monthly updates, home maintenance advice, and special deals available only through our email newsletter.
Leakage in attic after wind-driven rain
Possible causes: Leaky or inadequate shingle underlayment or deteriorated flashing
Possible causes: Inadequate shingle underlayment or inadequate attic ventilation
Possible causes: Excessive temperature or high humidity due to inadequate attic ventilation
Possible causes: Inadequate or faulty shingle underlayment allowing leakage or inadequate attic ventilation
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.
Possible cause: Inadequate attic ventilation
Possible cause: Shingles have reached the end of their useful life
Possible causes: Environmental pollutants; vegetation, fungus or algae; loss of granules due to age of shingles
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.