Open the whole wall, not just part of it.
Folding doors, also called bifold patio doors or exterior bifold doors, are a row of hinged glass panels that fold against each other and stack at one or both ends of the opening. When they are open, almost the entire width of the wall is clear, which is what makes them the favorite for outdoor kitchens, pool houses and living rooms facing the yard.
Aluminum makes bifolds practical at large sizes. Slim, strong frames carry the glass panels, and thermally broken profiles help with heat. Closed, they read as a glass wall; open, the room and the patio become one space for most of the year in Texas.
Every folding system is laid out for its opening: the number of panels, the direction they fold, whether there is a single entry door built into the system and what threshold works for the drainage. Blackline designs the layout, fabricates it and installs it with our own crews.
Panels, stacking and access.
We lay out each system around the opening and how you will use it day to day.
Stack to one side
All panels fold to one end, leaving the rest of the opening completely clear.
Split stacking
Panels fold to both ends for very wide openings and a centered view.
Traffic door
One panel works as a regular hinged door for daily use without opening the whole system.
In-fold or out-fold
Panels fold inside or outside depending on furniture layout, patio space and weather exposure.
Frames, hardware and threshold.
Frame
Slim, thermally broken aluminum profiles sized to the panel height and weight.
Glass
Insulated glass with Low-E options for west- and south-facing openings.
Hardware
Hinges, rollers and locking hardware designed for frequent opening and closing.
Threshold
Standard or low-profile thresholds chosen for drainage and a smooth indoor-outdoor step.
Finish
Black as standard, with other colors available.
Installation
Installed, leveled and adjusted by Blackline crews so the panels fold smoothly.
Aluminum Folding Doors we have installed.
What our clients say.
“I just want to take the time to shout out the crew from Blackline. My new door is beautiful. I can't tell you how pleased I am with my new door. Fair price, great customer service and friendly install team.”
“I couldn't be happier with Black line Premium Services. From the first consultation to the final installation everything was handled professionally and on time. The quality of the door is amazing…”
“Very good experience with Emi the sales manager. We had two doors installed only through him. Very good, very responsive, and always available. Highly recommended.”
“I work for a Houston custom home builder, and Blackline Premium Solutions is a trusted trade partner that always delivers excellent products for our homes.”
From opening to installed, in four steps.
Consultation
Send rough sizes and a photo, or visit our showroom to see doors full size.
Shop drawings
We confirm measurements, glass, finish and hardware on drawings you approve.
Fabrication
Your door is built to the approved drawings and checked before it ships.
Installation
Our own crews install, seal and adjust the door, then walk you through it.
Installed across Texas.
Our own installation crews serve the major metros across Texas, with an iron door showroom in Houston where you can see every door full size.
Questions about aluminum folding doors.
What is the difference between bifold and sliding doors?
Bifold panels fold against each other and stack at the end, opening almost the full width. Sliding panels glide and stack behind each other, keeping larger glass panels but leaving part of the opening covered. We help you choose per opening.
Are aluminum folding doors secure?
Yes. Folding systems use multi-point locking on the panels and are built with the same aluminum frames as our sliding systems.
Do folding doors let water in?
Properly specified thresholds, sealing and installation keep water out. Out-fold systems and the right threshold are often recommended for exposed openings.
Can I use a folding door as my everyday patio door?
Yes. We can include a traffic door in the system so you can go in and out without opening all the panels.
How much do aluminum folding doors cost?
Price depends on the width, height, number of panels, glass and installation. Send your opening size for a free estimate.
Related products.
Aluminum Sliding Doors
Multi-panel aluminum sliders that open the room to the patio.
View →Aluminum Windows
Slim-profile aluminum windows for large openings and views.
View →Iron French Doors
Divided-lite iron French doors for patios, pools and interiors.
View →Iron Pivot Doors
One oversized panel on a concealed pivot for modern entries.
View →Tell us about your opening.
Rough sizes and a photo are enough to get started. We come back with pricing and lead times.
