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Trex Composite Decking

You Could Build Your Deck With Other Materials...But Why Would You?

What Trex Won’t Do

Trex composite decking won’t rot, warp, or splinter. It’ won’t fade or stain. It doesn’t require seasonal painting, sealing or staining. And termites don’t like the taste.

Chose Your Colors

Vibrant shades of possiblity give out he unmatched control over the design of the deck. Discover your style with a wide range of options.

Don’t Stop At The Deck

Trex offers a wide range of outdoor rails, lighting, pergolas, kitchens, stairs, furniture, outdoor fire & water, lattice, and even cornhole boards!


Features and Benefits

  • Built to withstand years of sun, sleet and snow with high-performance technology
  • Low-maintenance proprietary shell cleans easily with soap & water
  • 25-year limited residential and fade and stain warranties makes good on its promise
  • Made of 95% recycled materials in the United States

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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!