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18/05/2008, 10:20 Tandem_Pilot Joined on 23/08/2004 Posts 284 Dividing Wall - Advice Please I have a house within a barn. Unfortunately, the two are not seperated as can be seen below. It is my intention to build a wall from where the ladders are leaning, across the barn to where I am taking the photo. As this will seperate warm from sometimes bl%%*y freezing, what is the best method of  construction to ensure maximum thermal efficiency? Regards Alex Milton Keynes and the Haute Vienne    Report

18/05/2008, 11:07 sweet 17 Joined on 05/08/2006 charente maritime Posts 2,635 Re: Dividing Wall - Advice Please Will ask my OH later for you, if you like.  He is a retired architect and chartered building survyor.  Just for what it's worth, I would think possibly the wall should be constructed of plaster boards with those metal grid things that they use so often in France.  To the grids you then attach insulation materials. You then have the insulation materials as well as the air space in the cavity and both should provide excellent insulation.    Report

18/05/2008, 14:16 Gastines Joined on 23/08/2004 Les Gastines.St.Pere 5mins St.Malo Posts 852 Re: Dividing Wall - Advice Please Cheapest,quickest and easiest way is with metal studs, put your base plate on floor.plumb up to fix a head plate right across the roof,fixing wherever and as much as poss. The metal uprights click into each other so you can extend to whatever hieght you want,also the big bonus is that they don't warp/bend/burn and are insect proof.You can use 400mm or 600 mm centres and crimp-fix tops and bottoms as you put boards up. Do one complete side,install any cables required inside convoluted trunking before putting required insulation in ,then board the other side. For extra strenght ,fire resistance and soundproofing you can double board interior side so that board joints are NOT on same studs. Regards.    Report

18/05/2008, 14:30 powerdesal Joined on 07/01/2006 ex-Sharjah U.A.E Posts 2,174 Re: Dividing Wall - Advice Please  Tandem_Pilot wrote: I have a house within a barn. Unfortunately, the two are not seperated as can be seen below. It is my intention to build a wall from where the ladders are leaning, across the barn to where I am taking the photo. As this will seperate warm from sometimes bl%%*y freezing, what is the best method of  construction to ensure maximum thermal efficiency? That would appear to be a seriously big wall, assuming its as high as the blocked doorway at the top of the steps then its probably 14ft high with the roof apex about 10ft above that. Not, I would suggest, a subject for a plasterboard wall. My view would be a concrete block wall using the block type that are a sandwich with dense foam between the sides (do they exist in France?) up to the 14ft level with horizontal joists above to form the supports for a ceiling, and first floor joists for upper floor. Batten the inner face of the wall and fit additional insulation then plasterboard over. Comprehensively insulate the upper ceiling and finish the internal ceiling face as required (exposed joists / beams, flush plasterboard etc etc) Steve now ex-Sharjah + 50 (in France) ...........................................................................    Report

19/05/2008, 9:26 Tandem_Pilot Joined on 23/08/2004 Posts 284 Re: Dividing Wall - Advice Please Thanks all. I, too, am of the impression it's just too big for all plasterboard (you're correct Steve - 8 metres to the roof apex). Sweet 17 - I would be interested in what your OH has to say, Thanks Regards Alex Milton Keynes and the Haute Vienne    Report

19/05/2008, 15:57 Grumpy Joined on 23/08/2004 23 Posts 101 Re: Dividing Wall - Advice Please How about Ytong-Siporex foamed concrete blocks. Very good insulation property and sufficiently robust for the height required. Steve There are 10 kinds of people, those who can count in binary and those who can't!    Report

19/05/2008, 17:28 sweet 17 Joined on 05/08/2006 charente maritime Posts 2,635 Re: Dividing Wall - Advice Please Apologies for not replying.  OH going to look at it and, provided I am not locked out yet again, will post his answer.    Report

19/05/2008, 17:54 sweet 17 Joined on 05/08/2006 charente maritime Posts 2,635 Re: Dividing Wall - Advice Please T-P The OH has had a good look at your photo.  Says there are various ways of achieving your purpose.  However, you need to be careful how the wall is constructed; you need to "stagger it", putting in bays or even put a load on top of it, otherwise a wall of this size is not stable.  You might also need good foundations for it. You could also build it up as Steve (Powerdesal) has suggested up to first floor height and then use lightweight materials above that which will allow you to build the wall to the shape of the barn roof. Most important of all, he says there is insufficient information to advise you conclusively.  However, I will pm you with our telephone number and he says he is happy to have a chat with you about it (no obligation, of course). Cheers    Report

19/05/2008, 22:35 Wilko Joined on 23/08/2004 84 Vaucluse Posts 213 Re: Dividing Wall - Advice Please How about wooden frame and straw bales, then render ? You seem to have lots of space and they are cheap and thermally efficient. Happy building Wilko    Report

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