What are different types of doors?There are four different types of garage doors, categorized by how they open. Sectional roll up garage doors are the most popular for residential homes. They follow a track and are divided into sections that articulate while being raised and straighten out when they are being lowered. Carriage doors are usually either swing out or slide. They are usually used instead of roll up garage doors for a distinctive look and in older houses. Single piece tilting doors were very common in the 1960s and 70s but are used less often today.
How does an automatic garage door opener work?
Automatic garage door openers are a system used by many homeowners to simplify their garage door opening and closing process. An electrically powered motor / drive is connected to a belt or chain, which is attached to the garage door along a single long track. At the end of the track, a pulley and cable system connect with the garage door along a curved arm, which is attached to the door’s torsion springs. The torsion springs store energy that is used to reduce the weight that the drive and belt must pull when the garage door opener engages.