Before - Existing Endwall With Old Sliding Doors
Retrofit your door
Our customers ask us to retrofit their existing quonset style buildings with a
new bifold door to better utilize their building and take advantage of the
reliability and durability of our bifold doors. Continue reading to learn how
Schweiss can help you revitalize your existing building structure and enjoy the benefits
of owning a bifold door.
After - With Schweiss Bi-Fold Door

END WALL
Rubber
Top
Flash
Steel
Siding
Base
Trim
Trim - Side View
Bracing For the Free
Standing Header
REGULAR FREE STANDING HEADER SETUP
FREE STANDING HEADER IS ABOVE THE ENDWALL
FREE STANDING HEADER IS TO THE VERY TOP OF THE BUILDING
BI-FOLD DOOR ATTACHED TO EACH FREE STANDING HEADER STYLE
How a round roof building can be modified to hold a bi-fold door. Stay within the roof line.
Opening the entire endwall of your building to gain width and height.
Mounting a bi-fold door on the side wall of your building.
Top Flash
Steel Siding
Base Trim
Rubber
Building Roof
Weld
Rubber
Horizontal Support
Lateral Bracing
SIDE VIEW OF BRACING
SIDE VIEW OF FLASHING
BEHIND THE HEADER
Horizontal Support
Lateral Bracing-
up to the roof
horizontal support
Quonset Building with Concrete Curbing
Option 1
Option 2
Side View
Side View
Gap
Header is
sitting on
the face
of concrete
curb
Header is
sitting on the
face of
concrete
curb
Concrete Curb
Concrete Curb
Concrete Curb
Hold free standing header
legs away from the face of
the building
Sheet this gap between
the free standing header
and the quonset building
Door Header Channel
Sheeting
Curved Angle
Canopy Roof
