If you need to get a ladder for a particular task, you might want to know more about ladders in general. This may help in your choosing the right ladder for the job. For many tasks, the rigid ladder is the type often used. There are many types of rigid ladders, from the fixed type to the roof ladder type. The most basic of these is the fixed ladder; it has no moving parts. Extension ladders are composed to two ladders where one can retract into the other for easy storage. The ones that form a reverse V are called step ladders. The one with a platform is naturally called the platform step ladder. Ladders that have hooks to firmly set them locked on the roof are called roof ladders. The preferred material for many ladders, except those used in electrical work is aluminium.

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