WeatherMaster™ Plus Bi-Fold Doors
Open up an entire wall
Aluminum bi-fold doors that fold neatly to the side, connecting your kitchen or living room to a sunroom, or a sunroom straight out to the deck. Closed, they seal tight. Open, the wall disappears.
Enhance Your Home with Bi-Fold Door Systems
A European-designed system built for oversized doors and slim sightlines engineered so the wall between inside and outside can simply go away when you want it to, then seal up tight when you don't.
Slim sightlines, oversized panels — more glass, less frame
Opens in or out — same profiles either way, so the swing fits your space
Ultra-smooth bottom running — above-ground track with multiple threshold options
Excellent thermal performance — 30mm polyamide thermal break, 1.4 W/(m²·K)
Secure by design — concealed shoot-bolt locking with single-point handle


Configure It to Your Opening
Bi-fold doors fold flat to the edge of the frame, so opening them costs you almost no floor space something a sliding patio door can't do. Nearly any configuration is achievable, up to a maximum of 7 panels left and 7 panels right.
Configure it to you opening: these measurements for a single door are meaningless. All we need is:
Configure it to you opening: these measurements for a single door are meaningless. All we need is:
- Max height 10’ - Max width 16 ft
- Available with ViewFlex vinyl windows, single pane glass, or insulated glass
The Sunspace Difference
A bi-fold door system replaces an entire wall and a wall-sized opening leaves no room for error. If it isn't measured, squared, and set correctly, the panels bind, the seals gap, and the door never operates the way it should. As an authorized Sunspace dealer, Builders America gives you genuine WeatherMaster™ Plus systems, precise custom measurement, factory-trained installation, and full manufacturer-backed warranty protection none of which come with look-alike products or unverified installers.

Quality Materials
Aircraft-grade aluminum, ViewFlex™ vinyl, and Low-E glass Sunspace builds with premium materials engineered to outlast the seasons, not just survive them.
.webp)
Best-in-Industry Warranty
Your investment is protected by one of the strongest manufacturer warranties in the business backed by Sunspace and honored by your local certified dealer.
.webp)
Certified Installation
Every Builders America install is performed by factory-trained, certified crews so your windows fits right, seals right, and performs right the first time.
Built to Match Your Home
Choose from five frame colors and your choice of Vinyl or glass windows. Doors with ViewFlex vinyl windows are ideal for enclosing a sunroom from an open deck or the outdoors. Insulated glass provides full thermal protection between your home and an unconditioned space or the outdoors.
Ready to Transform Your Outdoor Living Space?
Whether you’re considering a Sunspace sunroom, screened porch, or WeatherMaster™ upgrade, our team is here to guide you every step of the way. As an authorized local dealer, we deliver expert recommendations, certified installation, and beautiful results built to last. Let’s bring your vision to life.
Start the Conversation
.webp)



