Am pulling out one of the roller doors and alraedy have a sliding glass door the right width to fill the space, well almost its 4 mm to wide but I am hoping i can squeeze it in

My question is do I put the base of sliding glass door frame straight onto the concrete or are you supposed to build it up so its 30mm or so off the ground? and if so with what (steel, timber?)

The ground slopes away from the garage so there is very little chance water would flow into the garage.


Read the full thread at RenovateForum.com...