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Custom Masonite Interior Door Replacement Made Easy!

When selecting Masonite for interior door installation, precision in measuring and installation accuracy are crucial elements of the service. Accurate measurements are the foundation of a successful installation, ensuring that the Masonite door fits perfectly within the space, aligns correctly, and operates smoothly. Masonite’s range of doors is renowned for its variety of high-quality finishes, offering a spectrum of styles from classic to contemporary to suit any interior design. These finishes are not only aesthetically pleasing but also crafted to stand the test of time, maintaining their beauty and integrity through years of use. The installation process of a Masonite door is comprehensive and mindful of the homeowner’s space. Allegheny Millwork & Lumber is committed to a clean and efficient installation, ensuring that the work area is left spotless, with no debris or dust left behind. This no-mess approach to complete installation reflects the brand’s dedication to customer satisfaction and excellence in service, making the addition of a Masonite door to any home a seamless and hassle-free experience.



Affordable Style and Safety

Safe N' Sound Solid Core Doors

Masonite is on a mission to put solid core doors in every home. Made of solid material all the way through, they feel more substantial and block sound more effectively. For minimal cost, solid core doors create a dramatic improvement in overall quality.

Complete Customization

From hollow to solid core, single to multiple panels, wood, molded MDF, flush veneer, and flush MDF material, to any paintable or stainable finish, your choices to pair with any of our collections and styles can be virtually endless.

Introducing The Livingston

Masonite’s new Livingston Collection instantly transforms any interior with a unique profile that is universally appealing. The door features an authentic recessed panel with a touch of rich detail.


Features and Benefits

  • Quick delivery to Allegheny Millwork & Lumber!
  • Third-generation family owned
  • Sound-reducing technology for select product lines
  • Solid core durability withstands dents and dings
  • 20-minute fire rating for select heights and designs

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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!