Green Building Bible, Fourth Edition |
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These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book. |
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Posted By: Ed DaviesI'd wonder about water vapour coming up from the ground, though.If it's a new building then I'd expect building regs for floors would prevent this. Our garage has a DPM for example.
Posted By: WillInAberdeenRoofs get warm when the sun shines and then they dry towards the inside. Leave it all vapour open, for me.
Posted By: djhIMHO, I'd probably put a VCL in on the grounds of future proofing the building. If somebody later adds something that can produce moisture it will minimise the risk.
Posted By: ShevekI switched to a warm roof detail, but how best to link a VCL in the wall with the VCL to the warm roof deck? The timber frame manufacturer/installer wants to use 120 mm PIR off cuts to insulate the wall.I presume that's the first of your diagrams? And that there should be a red line (which I presume to be the VCL?) as in the second diagram? How are they going to use rigid insulation offcuts to insulate in and among open web joists? I could believe quilts and I could believe blow-in insulation such as warmcel or EPS beads or blow-in foam. The VCL will be whatever is used to hold the blow-in insulation in place, or on top of it. It'll be a royal pain to build I would have thought, with lots of cutting and taping to be done.
They also want a sub-deck below the firrings so that they can use it to safely install the firringsWhy can't they safely install the firrings from a step ladder or a scaffold tower?
Joist hangers sound like a sane alternative, or add a ledger beam below the joists.
Why can't they safely install the firrings from a step ladder or a scaffold tower?
Posted By: ShevekIt's just occurred to me that there's no reason in principle why they can't attach the firrings to the top of the joists on the ground before they install the joists (assuming that's where they're planned to be fitted).Why can't they safely install the firrings from a step ladder or a scaffold tower?
It's a bit weird right? It's only 2.5 m high. I think I'll send them this and see what they say.
Posted By: tonyLooks like too little fall on roof and not fail-safe edge detailWhat fall do you think is correct, Tony? What detail would you suggest?
Why don’t joists sit on the wallsWhich diagram are you looking at and have you read the messages?
Posted By: djhIf it's a new building then I'd expect building regs for floors would prevent this. Our garage has a DPM for example.
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