FAQ
Garage Door Questions, Answered — Page 9
More in-depth answers from Denver’s G Brothers Garage Doors. Tap any question for the full guide, or use search to jump straight to a topic.
Commercial
Commercial questions
Do I need a building permit for a commercial garage door in Denver?
Yes.
Read answerCommercialWhat is a commercial jackshaft operator and does it need a separate lock?
A commercial jackshaft operator mounts on the wall beside the door and turns the torsion shaft directly, instead of pulling a trolley along a center rail.
Read answerCommercialWhat is the difference between a commercial and a residential garage door opener?
Commercial openers are built for heavy doors, high daily cycle counts, and continuous operation under multiple users.
Read answerCommercialWhat is a high-speed fabric commercial door and when should I use one?
A high-speed fabric commercial door opens at up to 100 inches per second, five to eight times faster than a standard rolling steel door.
Read answerCommercialWhat are the most common problems with roll-up commercial garage doors?
The five most common problems are: coil drum wear, bottom bar damage, spring failure, operator motor failure, and guide rail damage.
Read answerCommercialDoes a rolling steel commercial door require ceiling clearance?
A rolling steel door needs minimal headroom because the curtain coils into a compact drum directly above the opening.
Read answerCommercialHow often must a rolling steel fire door be tested in Colorado?
Every fire-rated rolling steel door must receive a formal drop test once per year under NFPA 80.
Read answerStill have a question?
Call us and describe what your door is doing. We will tell you what is likely wrong and what it costs.