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Customers Choose Siding With Allegheny Millwork & Lumber

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.

Related Products


Add The Finishing Touch

Little details make a big difference. House trim gives homes and other structures a clean, finished look. Nothing is a better complement to beautiful siding. We have several exterior trim styles and finishes, from historically correct to uniquely yours.

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The Perfect Look

Atlantic Premium Shutters - Arch Panel 3-in Row

It takes less than 10 seconds for someone to form impressions about a house. Our premium shutter options offer lasting Impressions and stunning curb appeal.

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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 the windows you need to compliment the look and feel of your home. Additionally, we offer window installation services.

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How It Works

Our Process

Showroom Consultation
Planning and Initial Quote
Measurements and Revisions
Order and Go!
Explore Our Brands

Shop Siding In Pittsburgh


We Share Your Inspiration To Change Your Home.

Design Team

Let's Bring Your Vision To Life.

Our design team is ready to help make the home project of your dreams a reality. When you are looking to update your home, you want a professional designer who will bring fresh, new ideas to your living space. Our kitchen and bath designers use innovative methods to help recreate rooms with style, functionality, and lasting value to fit each client’s specific needs and budget. We are at the forefront of our industry through continued design education and commitment to customer satisfaction. You can expect a wide range of premium products and resources for your home, as well as creative design solutions with attention to every detail. We will take your kitchen and bath ideas to create a space for everyone to enjoy. Making a hassle-free, personalized service is our number one priority.

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Featured Products

Thermory Cladding

Thermory Cladding Siding - Benchmark Pine Cladding

There’s nothing like the natural elegance of real wood, and with Thermory Cladding, you don’t have to sacrifice looks for durability or longevity. Available in variations that match wood grains from spruce to ash, you’ll find colors and finishes to elevate the appeal of any space. And with its industry-leading dimensional stability, you can count on Thermory Cladding to look great for the long haul, outdoors or in.

Thermory Cladding
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!