batfink007
Active Member
Post is a work in progress....
The building will be as large as I can go within permitted development, so head-height (and therefore Atmos speaker height) will be a limiting factor.
Internal measurement will end up just under 4m wide and about 7m long. There will be entrance door which will open into a narrow ‘lobby’ which will open into the main room.
I bought some plans from William at Oakwood Garden Rooms (see Youtube) and modified them slightly to allow for thicker walls for extra insulation. I won’t be putting bifolds in, but I have put a steel in just incase it makes sense to convert it into a garden room should we decide to sell the house at some point. I will post a few pictures of the construction, but won’t go into detail because 1) the ‘IP’ is not mine and 2) there may be differences of opinion on what is ‘right’ and what is ‘wrong’ with the approach. I don’t want to get into that.
I want 2 rows of 3 seats, but don’t really have the head height for a riser unfortunately. Will have to see how that works out.
Projector will be mounted ‘in’ the wall dividing the lobby and the cinema. This dividing wall will also serve as storage for discs, and as a sound-absorption panel (solid, plastered on the 'lobby' side, partially open / covered with fabric on the cinema side).
Speakers will be partially mounted in the walls by 50mm + depth of the internal walls.
Internal walls will be one layer of 18mm OSB plus 2 layers of 12.5mm plasterboard. Insulated with 70mm rigid and then 50mm rock wool. Not sure I’ll be using green glue. Nearest neighbour about 75-100m away.
External will be covered in black feather edge, which I have used elsewhere in the garden. Will post a picture of that later.
More details to come.........
I’ll use the 2nd post in this thread for a picture of the latest progress and the 3rd post for a kit list. I’ve started to narrow down option on the kit, but still a long way to go.
The ‘before’ picture. Don’t expect this to be a quick one!

Very rough sketchup:
The building will be as large as I can go within permitted development, so head-height (and therefore Atmos speaker height) will be a limiting factor.
Internal measurement will end up just under 4m wide and about 7m long. There will be entrance door which will open into a narrow ‘lobby’ which will open into the main room.
I bought some plans from William at Oakwood Garden Rooms (see Youtube) and modified them slightly to allow for thicker walls for extra insulation. I won’t be putting bifolds in, but I have put a steel in just incase it makes sense to convert it into a garden room should we decide to sell the house at some point. I will post a few pictures of the construction, but won’t go into detail because 1) the ‘IP’ is not mine and 2) there may be differences of opinion on what is ‘right’ and what is ‘wrong’ with the approach. I don’t want to get into that.
I want 2 rows of 3 seats, but don’t really have the head height for a riser unfortunately. Will have to see how that works out.
Projector will be mounted ‘in’ the wall dividing the lobby and the cinema. This dividing wall will also serve as storage for discs, and as a sound-absorption panel (solid, plastered on the 'lobby' side, partially open / covered with fabric on the cinema side).
Speakers will be partially mounted in the walls by 50mm + depth of the internal walls.
Internal walls will be one layer of 18mm OSB plus 2 layers of 12.5mm plasterboard. Insulated with 70mm rigid and then 50mm rock wool. Not sure I’ll be using green glue. Nearest neighbour about 75-100m away.
External will be covered in black feather edge, which I have used elsewhere in the garden. Will post a picture of that later.
More details to come.........
I’ll use the 2nd post in this thread for a picture of the latest progress and the 3rd post for a kit list. I’ve started to narrow down option on the kit, but still a long way to go.
The ‘before’ picture. Don’t expect this to be a quick one!

Very rough sketchup:
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