Some manufacturers have created an alternative by building a hydraulic door similar to the old style garage doors without hinges. The door, when open, rolls back into the building structure resulting in loss of valuable headroom, and it has moving parts, push slides, cam-rollers, and cam-tracks. The door, when open, teeters on two pivot pins and the cam-rollers ride in a track that protrudes back into your building.
On tilt-up doors one-third of the doorframe slides back into the building when open, similar to the old style garage doors! There’s nothing tying the moving doorframe to a fixed header! The doors cylinders are the only things that attach to the side of the doorframe... that’s it. The door is guided
by a set of rollers that go along for the ride by guiding / balancing the doorframe
back into the building, again, resulting in the loss of valuable headroom!
Hingeless Door Design . . . You sacrifice stabilty of the doorframe, making it harder to seal. Tilt-up Doors don’t use hinges on their doorframe to provide needed support and stability! The hingeless door design localizes all the forces to the very ends of the doorframe, relying on the cylinders and top rollers to support the door in all positions! The competitions hingeless door design does not utilize any hinges for additional support! The Schweiss design offers so much more and the robust hinges add stability to the doorframe and header!
Hingeless doors have less support for a door.
Only the outside cylinders and top guide roller that cantilever off the top side of the doorframe are guided in a cam-track as the door opens and closes. Doorframes rely on a shaft that cantilevers off each side of the doorframe that connect to a vertical hydraulic cylinder that raises and lowers the door. (Advantage of doors that have hinges allow for flexibility of the door and frame without binding on the cylinder pins and brackets).
Schweiss Hydraulic Doors are designed with heavy‑duty hinges that help carry the entire weight of the door when opening and closing! The advantage of heavy‑duty hinges on a moving doorframe is that they distribute the weight of the doorframe evenly across the subframe header to give the door stability in all positions! It's all about surface area. Schweiss hinges help spread the forces over a broader portion of the doorframe and header lowering the stresses that are transfered to the hydraulic cylinders and components of the door!
The cylinders on these style doors that raise and lower the door are connected to a pin that is cantilevered off each side of the doorframe. Both pins and rollers carry the entire weight and loads of the door. These doors have two support points and two guide rollers!
The hydraulic cylinders on Schweiss doors that raise and lower the door are connected to the doorframe between two verticle frame members. These verticle frame members balance the weights and forces on the hydraulic cylinders. Spherical bearings are also used to accommodate any flexing, making a strong and safe connection! Schweiss includes 6 to 24 hinges ( depending on the door size ) that are connected to the doorframe to help carry the weights and loads of the door! Schweiss doors utilize hinges to provide a strong connection and safe door! Schweiss hydraulic cylinders have a direct force on the doorframe, not on a cantileverer pin that sticks out the side of the door frame!
Customer must figure back in what the additional footings will be adding to the cost of the door
Door opens to the inside of the structure. When the tilt up door is in the fully open position, one third of the door slides back into the building similar to the old style garage doors — losing valuable headroom! Tilt-up doors obstruct valuable inside space when open and utilize a cam mechanism that travels within a framework, reducing headroom space inside the building structure. This costs you valuable headroom and space you paid for, in addition to blocking interior lighting! A customer told us “The headroom loss from a tilt-up door as compared to a Hydraulic door type was a deal breaker for me."
A hingeless doorframe sits in-between two columns. As the door opens it lifts up and floats inward simultaneously. The door requires a gap on each side with at least enough clearance for the doorframe to tilt back into the building as it opens! The gap on each side needs to be sealed! The doors are typically 1.5” to 3” narrower on each side of the framed opening!
Note: Schweiss doorframes overlap the side columns two inches, not allowing any gaps! Doors are easy to seal when the doorframe overlaps the column; it’s harder to seal gaps when the doorframes do not overlap the columns!
Schweiss doors are extremely weathertight and designed so the doorframes overlap by two inches on each side column making it easy to seal on the sides of the doorframe. The two hydraulic cylinders pull and power the doorframe securely and seal against the door columns! Unlike most tilt-up doors, Schweiss doors are powered down; Tilt-up doors float down into closed position and the doorframe does not overlap anything, leaving a huge gap that needs to be sealed off resulting in dust and dirt blowing through the gaps and cracks.
By design, tilt-up doors do not contact the side columns, leaving a huge gap that needs to be sealed to keep the outside elements out of your building! When operating the door any slight movement from left to right causing irregular gaps that are challenging to seal! The tilt-up door require two seals on both ends of the door. One seal mounts to the vertical column the other seal mounts to the doorframe. Both seals will be rubbing against each other when opening or closing. By design this door rotates as it opens — the doorframe rolls up and tilts inward into the building and the bottom tilts outward; both seals will be rubbing against each other as the door opens and closes. Maintaining a good seal can be a real challenge; keeping the weather seals intact and in place with every cycle!
With a tilt style door containing no hinges you get less stability. There are no fixed connections to the doorframe other than a cylinder on each side of the doorframe. These cylinders do not pull the door downward, it just floats downward. Even the least amount of snow or debris under the doorframe or a frost heave on the outside ramp will result in the bottom of the doorframe sitting slanted and not level with the floor. When a door just floats down instead of being powered down by its cylinders and pump, the bottom seals cannot do an adequate job of sealing the door in the closed position. This creates a gap on one side and a tighter fit on the other side resulting in an open gap or crack that will allow daylight dust, dirt and snow to blow inside your building or even unwanted rodents to come inside.
The large tilt-up doors can move left to right inconsistently when closing causing irregular gaps along the vertical edges, header and sill. The tilt-up door requires weather seals at the top and bottom, with double seals on the sides. Nothing seals better than a Schweiss Door.
An external doors truss mounts near the center of the doorframe.
When cladding/sheeting the door, the sheeting is notched/cut out
around the center truss brackets. They need
to be caulked to keep moisture out!
MORE PARTS... MORE BOLTS... MORE TIME TO INSTALL...
Others companies ship their doors broken down as a bolt-together kit; a giant Erector Set with lots of bolts, small parts and cables to deal with! If by chance the kit is missing components or not assembled correctly it’s gonna cost somebody extra time and money! Usually it ends up costing the end-user more when that happens!
Installation of bolts and cables on a moving doorframe is critical and is all up to the erector to do a good job. Are all the bolts tight? Did you miss any? Do I have the doorframe square? Did I bolt the truss in place? This all sounds like a real timely undertaking to install a kit door! Kit doors may save manufacturing time, but add more time for the installers to assemble the door at the job site! Schweiss doors are pre-assembled, pre-welded and delivered pre-hung within its own doorframe for easy installation.
Will a kit door be as strong as an all-welded doorframe? Welds never work loose and are a much stronger and permanent connections — welds never need to be reinstalled or tightened. Schweiss doorframe members are shop-welded, the doorframes are manufactured square from the factory; meaning less field labor is required. Every member of an all-steel door from Schweiss is positively welded in place. There are no tedious bolts or cables to install.