Moteyi
Seedling
Evening. I would really appreciate some advise on modifying my garage roof at home - see below.
The garage is single skin, and the roof has a span of 5.4m a pitch of 45 deg and is 5.7m wide. The rafters are 5x2 and the joists 6x2. At each end the rafters have been doubled up. When I moved in, I boarded the loft and added a staircase and to date it has been used as storage. My son would now like to get a few bits of gym equipment (treadmill, rower, bike but not weights) and so I want to open the space up a bit. At present there are 3no 4.2 hangers from the ridge down to a 6x2 binder running across the joists. The binder isn't keyed into the brickwork. It is the binder and hangers I'd like to remove. Hopefully the following show the current construction.
What I am thinking of doing is shown in the sketch below (clicking on it should make it large enough to read)
Basically I am thinking of making 2 'structural' knee walls either side of the loft, as you would do in a loft conversion, with some access to the eaves for storage. In addition I would plan on adding some noggins between the joists (there aren't any at the moment) and a binder above the existing collars to take some additional hangers and pick up the existing ones. Just to add, I'm not planning on making it habitable, but I may put some 70mm insulation between the rafters and then p/b or ply the ceiling and possibly insulate between the joists. Oh and I might put a couple of velux windows in for natural light.
Any advise would be greatly appreciated.
The garage is single skin, and the roof has a span of 5.4m a pitch of 45 deg and is 5.7m wide. The rafters are 5x2 and the joists 6x2. At each end the rafters have been doubled up. When I moved in, I boarded the loft and added a staircase and to date it has been used as storage. My son would now like to get a few bits of gym equipment (treadmill, rower, bike but not weights) and so I want to open the space up a bit. At present there are 3no 4.2 hangers from the ridge down to a 6x2 binder running across the joists. The binder isn't keyed into the brickwork. It is the binder and hangers I'd like to remove. Hopefully the following show the current construction.
What I am thinking of doing is shown in the sketch below (clicking on it should make it large enough to read)
Basically I am thinking of making 2 'structural' knee walls either side of the loft, as you would do in a loft conversion, with some access to the eaves for storage. In addition I would plan on adding some noggins between the joists (there aren't any at the moment) and a binder above the existing collars to take some additional hangers and pick up the existing ones. Just to add, I'm not planning on making it habitable, but I may put some 70mm insulation between the rafters and then p/b or ply the ceiling and possibly insulate between the joists. Oh and I might put a couple of velux windows in for natural light.
Any advise would be greatly appreciated.
