About Allegheny Millwork’s Windows and Doors
Our curated selection balances architectural integrity with advanced functionality to serve homeowners, designers, and builders alike. At Allegheny Millwork & Lumber, we provide more than just materials. We deliver clear direction, expert solutions, and hands-on partnership throughout every single project phase. Step into our showroom and see how we’re redefining home design.
Entry Doors
Strong, Secure, CustomizableOur custom entry doors blend strength, security, and architectural appeal, with options ranging from traditional wood to modern steel-and-glass.
Security is built in, not bolted on. Our doors are constructed from premium materials that are designed to be as strong as they are stunning. As a homeowner, you’ll gain peace of mind without compromising design.
And if you’re a designer, builder, or architect, we’ll give you all the detailed specs you need so you can ensure a perfect fit.
Patio Doors
Indoor/Outdoor Living SolutionsWell-designed patio doors turn your deck or backyard into a natural extension of your home.
Our portfolio ranges from classic French doors to contemporary sliding, bi-fold, or multi-panel systems. We offer expansive glass, custom finishes, and hardware options to fit any design plan.
And because this is Pittsburgh, we know energy efficiency is non-negotiable. Our patio doors feature advanced glass packages that help keep the summer heat out and the winter warmth in.
Our in-house installation team is standing by to make your dreams reality.
Specialty Doors
Unique Options for Unique HomesSome homes are so one-of-a-kind that standard-issue doors just don’t do them justice.
Our specialty door collection includes exterior pivot doors for bold entryways, carriage doors for timeless character, and Dutch doors for added functionality. Interior options like sliding barn and custom panel doors are also available.
Built with premium materials and an unwavering dedication to craftsmanship, these doors solve unique design challenges while serving as fun conversation starters. If you have a vision that you just can’t seem to find in any catalog you thumb through, you’ve come to the right place.
High-quality windows and doors can keep your home comfortable and help you save money. Outdated units can account for up to 30% of heating and cooling losses, according to the Department of Energy. That’s like leaving a window open all year long.
Our products, featuring double or triple-pane glazing, argon fills and low-E coatings, act as a robust thermal barrier to prevent these losses.
You benefit from consistent indoor temperatures, reduced HVAC strain, and measurable utility savings.
Resources to Guide Your Vision
For Builders & Architects
Stay at the forefront of industry with our CEUs.
For Designers
Walk your clients through our curated showroom to help you find the perfect materials and simplify the design process.
For Homeowners
Feeling overwhelmed? Schedule a personal appointment with one of our experts and we’ll guide you from initial concept to finished project.
Get a Quote for Windows & Doors
Ready to invest in windows and doors that blend performance, quality, and design? Our team of experts is here to walk you through the process with a consultative approach that puts your vision first. Whether you’re looking for replacement windows in Pittsburgh or designing custom entry doors for a new build outside of the city limits, your journey starts here. Let’s have a conversation.



