Dependable, Honest, Affordable

We want you to feel supported by our specialists and know Trinity is truly a name you can trust. Reach out today. We’re thrilled to serve you!

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YEARS OF INDUSTRY EXPERIENCE
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COMMITTED TO SERVING YOU
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PA COUNTIES SERVED

Our Company

Located in the heart of the Mon Valley in Monongahela, we work with residential & commercial customers in and around the greater Pittsburgh area. Our office is shared with our sister company, Slagle Roofing and Construction. Both companies are owned by Mark Slagle, who has spent his working life in the roofing and construction industry. Along with sharing an office, we’re guided by the same values and commitment to serving people that makes us The Name You Can Trust.

Communication with us is easy and our specialists are respectful.

Store

Inside Store_About Page

Show Room

For your convenience, our indoor show room has samples of garage doors and awnings, brochures and color charts. Call in or stop by and see how we can help you today.

GARAGE DOORSWe offer a wide variety of garage doors to suit your commercial and residential needs. Service, Installation, Repairs, or Sales, we’ve got you covered! Visit the “Garage Doors” page for more info, brochures, and options.
OPENERSWe offer the full line of Liftmaster garage door operators. Feel free to browse our “Garage Door Openers” page for more info.
Enrty Doors
Why stop at a garage door when you can add an entry door that takes the beauty of your home to a whole new level. View our “Entry Doors” page to to view exciting options and information brochures or visit the “Garage Door Visualizer” page to “try on” entry doors and see what they’ll look like.
AWNINGS
Enjoy the sun in cool comfort with Sunsetter’s Manual, Motorized, and Freestanding retractable awnings. Custom awnings and shade products are also available for your home or business. Visit the “Awnings” page for more info.

 

Servicing Southwest PA

Washington County

Allegheny County

Westmoreland County

Fayette County

Greene County

Contact Us

724-258-6900

OUR MANAGEMENT

We’re Brian and Audra Gminder  and we oversee the sales and service of all garage door and awning customers.
If you want to work with a company that is guided by strong core values and committed to giving you the personalized experience you deserve, feel free to reach out to us. We look forward to serving you.

OUR OWNER

I’m Mark Slagle and I’d like to personally thank you for taking the time to browse our website. Whether you’re reaching out to Slagle Roofing & Construction or working with Trinity Garage Door & Awning, my goal is for you to notice there’s something different about us. We value people and trust far above making a dollar. We’ll always go out of our way to make sure your experience with us exceeds your expectations.

Over the last 25+ years, I’ve served customers across the Southwestern, PA region in all areas of roofing & construction, in both commercial and residential capacities. So when you hire us, you’re backed by the kind of experience that saves you time, money, and frustration.

Rest assured Trinity is the name you can trust.   

OUR WORK