Replacing a One-Piece Garage Door with a Sectional Door

Amarr says this replacement is typically possible. Its FAQ describes a professional installing track and springs for the sectional door; garage construction may require other modifications. Amarr advises dealer evaluation before installation so required changes can be performed. Amarr FAQ

Ask each proposal to identify the new door type, track and spring work, who evaluates the conversion, and how any construction changes will be specified. If one quote leaves those changes open, request the evaluation findings and a clarified scope before comparing it with an alternative.

Amarr’s general answer establishes neither fit nor the modifications needed at your garage. Leave those findings to the qualified installer; do not measure, adjust or test the door or hardware yourself.