Many houses in the UK use prefab timber frames and or heavy roof trusses. A crane is a perfectly normal requirement.
The airtightness requirement in UK is not that hard to pass. When the airtightness rules came in it caused a lot of headaches for cowboys, and was a doddle for well build dwellings. The vapor control layer needs to be right on the inside as it is supposed to stop vapour from reaching the structure. On a normal timber frame it would be right behind the plasterboard, right where picture hangers will hit it. Obviously a few holes are not hurting the bulk of buildings out there. Loose fill insulation is very widely used and doesn't have to slump, obviously everything could be made badly and installed badly.
I love to see new ideas for building. Personally I can see the future being about plywood panels laminated to foam in ready made units, rather than this, but good luck
18mm structural ply is a lot less than £40/sheet http://www.wickes.co.uk/Structural-Softwood-Plywood-CE2%2B-1... here is a well known (non trade) supplier selling it for £25+VAT (VAT is reclaimable on new homes)
Many houses in the UK use prefab timber frames and or heavy roof trusses. A crane is a perfectly normal requirement.
The airtightness requirement in UK is not that hard to pass. When the airtightness rules came in it caused a lot of headaches for cowboys, and was a doddle for well build dwellings. The vapor control layer needs to be right on the inside as it is supposed to stop vapour from reaching the structure. On a normal timber frame it would be right behind the plasterboard, right where picture hangers will hit it. Obviously a few holes are not hurting the bulk of buildings out there. Loose fill insulation is very widely used and doesn't have to slump, obviously everything could be made badly and installed badly.
I love to see new ideas for building. Personally I can see the future being about plywood panels laminated to foam in ready made units, rather than this, but good luck