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Customers Love Our Patio Doors!

I really like this place. Every profile I need, they have. They are always cheaper than the big box stores. Friendly and knowledgeable. My go to place in the winter.
They have a great selection of mouldings that you will not find in a big box stores. This time I was looking for Simpson strong ties and they have the best selection.
Best the place to go for any type of customers. The gentleman in the yellow hoodies definitely went above and beyond to help me, pretty much helped me out my car from the start. Worth the visit or call, you won't be disappointed.

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Interior Doors

Elevate Your Home's Look

Masonite Interior Barn Door Delta Frost

All of our interior doors are authentic in style, look, and material. We only keep in stock premium interior doors that exceed all industry standards to give your home the look it deserves. We can take care of you, from order to installation!

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Stylish and Durable

Kolbe Windows. Architect: kree8 Design Incorporated Builder: CMGT Construction City & State: Vancouver, BC Distributor/Dealer/Customer: Kolbe Gallery Vancouver

Allegheny Millwork & Lumber has all of the windows and skylights you need to compliment the look and feel of your home. Additionally, we offer window installation services.

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Exterior Doors

The Perfect Outside Look

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Welcome guests into your home the right way with Allegheny Millwork & Lumber exterior doors. We have a variety of doors to suit your home needs, and will perform the measurement and installation.

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How It Works

Our Process For Patio Door Installation & Replacement

Showroom Consultation
Planning and Initial Quote
Measurements and Revisions
Order and Go!
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We Share Your Inspiration To Change Your Home.

Installation Services

Consulting + Full Service Patio Door Installation

Our sales and installation professionals are here to listen and ask questions about your needs and budget. From windows, doors, interior trim moulding, millwork and stair treads, we can guide you in making your dreams a reality. Your home is your sanctuary and deserves special attention, that is what you will get at Allegheny Millwork & Lumber. We will provide a personalized estimate for the project and when you are ready to move forward, we will schedule a visit with our install coordinator who will inspect your space and take measurements of the work area. Once this is completed, we will write up a contract, place the order for your product and schedule a time for the installation.

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About Us

Why Builders Recommend Allegheny Millwork & Lumber

Our reputation for quality and excellence is why you should choose Allegheny Millwork & Lumber.  Our staff is highly knowledgeable and friendly.  We will help guide you through the myriad products when you are building or renovating your home.

From building materials to fine finishes, we have you covered.  Beautiful doors create a welcoming entrance to your home.  Crystalline windows and gargantuan patio doors can grace your property, framing the view and keeping you protected from the elements.  Our experts can help you make the decisions when choosing what is right for you.  No project is too big or too small.  Come see why the best contractors in Pittsburgh have been using Allegheny Millwork & Lumber for the last 40 years.

With over 350 moulding profiles in stock, we can adorn your windows and doors, ceilings, walls, and floors with quality woodwork to put your own stamp on the project at hand.  We can also match existing millwork to complete your historical renovation.

Additionally, we will help you design the kitchen of your dreams.  We encourage you to make an appointment in our 10,000 square feet design showroom.  You can also visit our virtual showroom by clicking on the link to the right  We hope to see you soon!