Does your home have proper ventilation?

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!

Grennan Construction's employees are trained and certified in attic ventilation principles, installation, and best practices. We stay up to date on the industry's most relevant training and research and use that knowledge to offer our customers the best service in Oakland County.

Why Take Risks?

It is estimated that 9 out of 10 homes in North America do not have proper attic ventilation. Why? Because most people are unaware that attic ventilation can impact the longevity of their entire home.

In both hot and cold weather, insufficient attic ventilation may cause moisture in the attic to become trapped and condense on the rafters.

The types of damage that can result from improper ventilation include:

Leakage in your attic after ice build-up
Blistering and/or peeling of your interior and/or exterior paint
Stains on your interior ceilings and walls or mold and mildew growth
Premature aging and decay of your roof shingles, sheathing, wood framing, and/or siding
High energy costs: In warm weather, inadequate ventilation will trap hot air in your attic, causing air conditioning systems to work harder, or leaving your home’s interior hotter and less comfortable. High energy costs can result.

For more information on how we can help you resolve any concerns you have regarding your home's roofing and ventilation, please visit our roofing information page.

Ensure the safety and efficiency of your home— call to schedule your free roofing estimate!

CALL NOW!

"The ache for HOME is in all of us... the safe place where we can go as we are and not be questioned."

—Maya Anjelou

Testimonials From our Satisfied Customers

"Worked directly with Fred Grennan, the owner. He was very thorough, professional and made sure I understood all of the details. He was able to schedule the job for the following week. The crew was on time, and brought enough workers so that the job was done in a day. The roof looks great!"

-William Rathaus

"My roof had not been provided an ice barrier when it was installed (before I bought it) and I developed a ceiling leak. Grennan responded the next day, bid a few days later, and the roof was repaired in less than a week. They came out on a Saturday to get it done. This company is professional, technologically updated and they do quality work."

– E. Crimmins

More Reviews

We are always looking for talented, skilled workers to join our team.

Please call the office at 248-462-0224

We are actively scheduling for 2021. If you have any questions or would like to request a free quote on a project, don't hesitate to contact us. We're always happy to help.

Sincerely,

Fred Grennan and the Grennan Construction Family

248-462-0224 | info@grennanconstruction.com