Green Building Bible, Fourth Edition |
![]() |
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. |
Vanilla 1.0.3 is a product of Lussumo. More Information: Documentation, Community Support.
Posted By: djhIf the EWI is in two 100 mm layers then it is possible to recess battens in the first layer so the screws don't need to be as long. Other possibilities include supporting the battens to support the cladding (assuming there are such!) either from the ground or from the top (eaves or gable). How heavy is the cladding?
Having said all that, 100 mm studs in a 200 mm insulation layer don't sound that disastrous!
Posted By: barneyHave a look for a product by "nvelope" - you want to look at the NV 6 range
Regards
Barney
Posted By: Nick Parsonsdjh comments above: '' 100 mm studs in a 200 mm insulation layer don't sound that disastrous!''. Surely you could do it with only 50 depth and, if your datum points and measuring ability are better than mine, maybe 50 width?
Posted By: dicksterOr do vertical cladding, no sagging?
Posted By: Nick Parsonsfixed with sufficiently stout fixings to keep it all tightTo be clear, the fixings' task is not to 'keep it all tight' as in clamping the batten to the inner EPS so that friction prevents it from sliding down, which it won't reliably - the fixings have to be 'stout' and numerous enough so the act as cantilevers.
Posted By: teach_glasI'm looking more and more towards 200mm I-Beam studs (at 800 centres?) with OSB sheathing on top to further break thermal bridge.
Posted By: barneyHave a look for a product by "nvelope" - you want to look at the NV 6 range
Posted By: barneypotential termite problems
Posted By: fostertom
Unless following the suggestion of ... who was it recently - djh? ... who suggested 'angling the fixings upward' - gd idea that cd change this whole discourse.
Posted By: djht sure how the OSB helps? I would just put the membrane over the EPS and screw through that into the I-beam flanges for the cladding.
Posted By: teach_glasThis is really interesting, I wish there were some examples of this being done to show my engineer!Sorry, can't find any online references but I helped out years ago with a Pavatherm roof which was fixed this way. Long Spax screws at 30° to the roof normal up and down the slope through counter battens, ~200mm of Pavatherm into oak rafters. So it's not an entirely novel idea though I've not heard of it being applied specifically to a wall.
Posted By: WillInAberdeenYes, some of the weight is taken in tension, but the fixing is longer, so overall the bending moment is (exactly) the same (see 1st para above).That would be true if the reaction to the compression against the insulation wasn't providing a bending force in the opposite direction.
Posted By: Ed DaviesThe assumption is that a screw is typically stronger in tension than it is in bending.