two benefits in going for roller or sectional – doesn’t take up any space in front when opening and closing and the frame is internal behind the garaged appetite, instead of inside it which gives you a good 3 or 4 inches of width. Doesn’t sound alot but is.
A manual roller door can be as cheap as £500 or even less. Mate of mine recently got an electric roller door for just under a grand I think but I wasn’t impressed with it…nothin as such wrong with it but just didn’t feel quality. I’ve got a decent electric sectional one that cost about £1400 for a single but has a RAL coloured door and tip top quality.