Butler Buildings allow the use of almost all types of roll-up doors needed for your project. It is important to allow proper headroom when installing your roll-up door. A good rule of thumb is to have at least 3' higher than your roll-up door height. For instance, if you need a 14' tall roll-up door, then you should have a 17' eave height for the drum clearance. At the threshold, the roll-up door will mount flush to the inside of your framed opening provided by Butler. The concrete apron should be sloped to the jamb, allowing proper water run-off. A storm threshold can be added to keep water completely out. 

State-of-the-art technology has allowed Porvene Doors and Butler to create a Door Dynamometer. This revolutionary invention has given us the unique capability of accurately measuring the torque characteristics of roll-up doors.

These characteristics are then converted into a graphical solution through our customized computer software in order to obtain precisely matched spring balancing. As a result, our customers enjoy a superior operating door. This is one of the many ways we strive for higher quality and performance. All roll-up doors come with either chain operation or an optional electrical opener. Power must be run to the motor.