I'm going to be building something I call a "Shed", but SWMBO refers to as a "Summer House" over this summer. We've agreed to call it a Summer Shed. It'll be used for over wintering plants and garden furniture and plants so will have antifrost heat, a potting shed, garden tool storage and generally a place to potter about.
It isn't big, just 3.5m x 2.4m. Going on to an already poured concrete slab. There are a few constraints which are preventing me from doing things the 'usual way', and a few desires.
I would be interested in advice and contact with anyone who has worked with green roofs (rooves?) before.
My current design thoughts are:
I am at a very early design stage and just wanted to check I'm on the right lines and am not doing something wholly inadvisable. More detail should emerge over the coming weeks and months.
I'm particularly concerned at the moment about structural loading and rigidity, and rot prevention, especially in the north facing location and under the green roof (no ventilation).
Any advice, suggestions or questions welcome.
It isn't big, just 3.5m x 2.4m. Going on to an already poured concrete slab. There are a few constraints which are preventing me from doing things the 'usual way', and a few desires.
- The shed is pushed back against a 3.5m tall boundary fence. This means the fall of the roof needs to be towards the front of the building not the rear to be able to access guttering.
- I'm 1.93m (6'4") tall and I WILL have a full height double width entry doors on the long side under the gutter. Windows either side of the double doors, meaning almost the whole long wall is glazed.
- Aesthetically we both like the look with long protruding eaves. So the height towards the back of the shed will be 2.4m to allow for the roof pitch to clear the opening doors.
- It will be located against a north facing boundary so will be quite dark, Windows can only go in the north and west sides of the building. So we are going to add a roof light/sky tunnel.
- The building is below the level of the main viewing point from the house, so rather than look at a metal/felt/EPDM roof we want to install a green roof. probably Seedums to keep the weight down.
- We want an invisible guttering system.
I would be interested in advice and contact with anyone who has worked with green roofs (rooves?) before.
My current design thoughts are:
- Full 4x2 framing on 16" centres. Doubled up in the corners for rigidity and roof loading.
- 6x2 roofing members 16" on centre, located directly over the vertical studs.
- Doubled up 6x2 header across the long wall of glazing. With doubledup vertical studs between the doors and windows for load.
- roof in OSB sheet with perimeter upstand to retain the green roof. EPDM liner.
- Rear wall clad in upvc siding - access to this wall will not be possible so i want to make it as durable and rot resistant as possible.
- Remaining walls clad in shiplap/tongue and groove to be painted.
- Foam insulation board to ceiling and walls, interior cladding in ply or OSB
I am at a very early design stage and just wanted to check I'm on the right lines and am not doing something wholly inadvisable. More detail should emerge over the coming weeks and months.
I'm particularly concerned at the moment about structural loading and rigidity, and rot prevention, especially in the north facing location and under the green roof (no ventilation).
Any advice, suggestions or questions welcome.
