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  1. Egbert Jager says:

    There should be negligible differences between the apparent weight of a single vs a double garage door – either belt or chain can open either one.

    – Why? The big spring(s) above the door are designed to balance the load. A person should be able to lift the door themselves (when disconnected from the carriage) – in case of power failure or opener problems you still want to be able to get your vehicle out. The door should remain in any position – balanced between the forces of gravity and the spring(s). If your door is “Heavy”, the springs are due for a ‘tune-up’.

    Buying a house is buying a job. Some jobs – like tightening an overhead garage door spring require a professional. The monthly lubrication, observation and tests to make sure the operation and all the safety features are working correctly – that’s your job.

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