The roof ladder is mounted on the roof if the slope angle is more than 8 °. It leads from the wall ladder or from the roof hatch to the chimney - so that it can be cleaned regularly.
A wall ladder provides safe access to the roof. They are attached to strong frame structures of the house - only then the installation will be reliable.
Requirements for installing stairs:
Certificate of conformity for roof ladders UkrSEPRO UA1.066.0232071-13.
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