Browse Forums Heating, Cooling & Insulation Re: Sarking, Wall wrap sisalation & insullation - what is it 21Oct 13, 2012 8:02 pm Settlement: 10.02.13 Slab: 06.03.13 Frame: 08.03.13 Lock-up: 05.04.13 Handover: 03.06.13 Build thread: https://forum.homeone.com.au/viewtopic.php?f=31&t=59555 Brisbane Photography Re: Sarking, Wall wrap sisalation & insullation - what is it 22Oct 14, 2012 8:43 am . Block settled 07 June 2011 Our little piece of the Interwebs on HomeOne....... viewtopic.php?f=31&t=48577&start=0 Re: Sarking, Wall wrap sisalation & insullation - what is it 23Oct 30, 2012 10:23 pm Our Build Here: viewtopic.php?f=31&t=74037&p=1255246#p1255246 Re: Sarking, Wall wrap sisalation & insullation - what is it 24Oct 30, 2012 11:27 pm . Block settled 07 June 2011 Our little piece of the Interwebs on HomeOne....... viewtopic.php?f=31&t=48577&start=0 Re: Sarking, Wall wrap sisalation & insullation - what is it 25Oct 31, 2012 12:28 am Our Build Here: viewtopic.php?f=31&t=74037&p=1255246#p1255246 Re: Sarking, Wall wrap sisalation & insullation - what is it 27Oct 31, 2012 10:01 pm Our Build Here: viewtopic.php?f=31&t=74037&p=1255246#p1255246 Re: Sarking, Wall wrap sisalation & insullation - what is it 29Nov 01, 2012 6:12 am . Block settled 07 June 2011 Our little piece of the Interwebs on HomeOne....... viewtopic.php?f=31&t=48577&start=0 Re: Sarking, Wall wrap sisalation & insullation - what is it 30Nov 01, 2012 11:13 am Has anyone thought outside the square? I have seen a lot of US UK shows where they line their external walls and roof with sheets of ply board or chipboard. Timber is one of the best insulators available and would probably be a good addition to any other form of sisalation / insulation. I am thinking of building into my roof space and want to keep as much heat out as possible with the fact that the plasterboard will be only 150mm beneath the tin roof, timber might be a solution? Anyone have any experience / advice with using this as insulation? Thanks Andrew Re: Sarking, Wall wrap sisalation & insullation - what is it 31Dec 01, 2013 6:47 am I've heard that you need to have a gap of 20mm between the wall sarking and the brick that goes on the outside. This is to stop the heat transferring through the sarking if in contact with the brick. The same idea for roof sarking. Has anyone heard of this? And if it's the case, do we need to specify this so the builder installs it with a space between the sarking and the external brick/cement tiles. Not sure if it is standard practice to install it this way. I'm looking to use R5.0 ceiling batts, R2.0 to walls as well as sarking to wall and roof. Not sure if this is an overkill for Melbourne... Re: Sarking, Wall wrap sisalation & insullation - what is it 32Dec 02, 2013 6:52 pm No bramsy the 20mm gap minimum in that particular part of the wall is to stop water transferring from the brick to the inner part of the cavity wall. A 20mm gap between the sarking ( usually installed onto a 20mm timber batten ) and the insulation installed between the stud frame makes a still air gap which adds to the effectiveness of the overall insulation of the wall. In your case I'd look to balance your insulation more by going for R 4.0 in the roof but R 2.5 to the walls ( R 2.5 wall batts fit inside 90mm wall studs ). And no it's not overkill, Melbourne can have damned cold winters and reasonably hot summers. Stewie Re: Sarking, Wall wrap sisalation & insullation - what is it 33Dec 02, 2013 7:43 pm bramsy I've heard that you need to have a gap of 20mm between the wall sarking and the brick that goes on the outside. This is to stop the heat transferring through the sarking if in contact with the brick. The same idea for roof sarking. Has anyone heard of this? And if it's the case, do we need to specify this so the builder installs it with a space between the sarking and the external brick/cement tiles. Not sure if it is standard practice to install it this way. I'm looking to use R5.0 ceiling batts, R2.0 to walls as well as sarking to wall and roof. Not sure if this is an overkill for Melbourne... I'm looking at similar for my Melbourne home. Hoping I can afford to get R2.5 in walls and likely R4.0 in ceiling - I can always top up the ceiling insulation later but walls will be stuck as is. I don't think it's overkill to be comfortable in a climate with such drastic variances in temperature. Re: Sarking, Wall wrap sisalation & insullation - what is it 34Dec 03, 2013 11:09 am Quote: I have seen a lot of US UK shows where they line their external walls and roof with sheets of ply board or chipboard. @carmania - I think you'll find that has to do as much about bracing more than insulation although I think you'll find it is not low rated common old construction ply but some kind of sheeting with a much higher R-value. I know that in the US they sometimes cover that ply with sarking or a thermal wrap then put battens over the top and then install the cladding. In your situation for your roof I'd look at an glasswool blanket type of insulation under your metal roofing. I'm sure it would be much more effective although they do add considerably to the thickness of your roofing - typically a 50mm foil backed blanket is rated at 1.1 and a 2.2 blanket is in the vicinity of 150mm thick ( all from memory so don't quote me on those figures ). But they sure as hell keep the hot summer sun out and the heat inside on a cold winters night which is worth its weight in gold in my book. Stewie Vapour permeable wraps are recommended for any climate and main think it is allow walls to breath (i.e. remove water vapour) while at the same time, providing protection… 4 10169 Hi Sleepless Knights, NOTE THE BELOW INFORMATION IS BASED ON RECOMMENDATIONS OF OTHER PEOPLE FROM FACEBOOK GROUP WHERE I POSTED THE SAME POST. I was told by few people… 9 5695 I am in the same situation, would you be able to give some insights in to this? I am in SA 8 18391 |