A double width Sectional Door (AKA Panelift) weighs 110 - 140kgs, but your garage door motor is only supposed to lift max 20kg (according to warranty). Therefore it is important to make sure your panel door spring are regularly adjusted, as overtime the steel coil spring will relax making your door heavier. This will labour your garage door motor causing it to "bounce" or damage your motor. We find that when it gets cold garage door springs snap and it sounds like someone has crashed into your door as it makes a loud "BANG"
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