Browse Forums Building A New House 1 Sep 19, 2007 5:46 pm Should I be installing wall sarking or wall wrap or whatever it's call in my new home? Re: Wall sarking/Wall wrap - is it worth it? 2Sep 19, 2007 5:50 pm I thought wall wrap/foil/sarking was pretty standard? All of the houses around here have it put on after the frame is up and just before they brick. I thought that the roof sarking was extra...
Don't quote me though - we aren't up to that yet. Ray. Second Time 'Round Re: Wall sarking/Wall wrap - is it worth it? 3Sep 20, 2007 10:08 am I called our builder... it's not standard.
Should I get it? Re: Wall sarking/Wall wrap - is it worth it? 5Sep 20, 2007 5:00 pm Really nice design Mark.
I would assume that there will be insulation batts in the walls [ usually R1.5] to meet the energy requirements. In a brick veneer home, sarking or sisalation would be normally included . . . .if only to keep the batts within the frame space. This would be a normal procedure. Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. Re: Wall sarking/Wall wrap - is it worth it? 6Sep 21, 2007 8:34 am ausdesign Really nice design Mark. I would assume that there will be insulation batts in the walls [ usually R1.5] to meet the energy requirements. Thanks. Im getting R2.0 in the walls. Quote: In a brick veneer home, sarking or sisalation would be normally included . . . .if only to keep the batts within the frame space. This would be a normal procedure. Hopefully it is included but my initial enquiries have led to the possibility that it isn't. There was a bit of umming and ahhing on the other end of the phone so I don't think they are sure. I could only talk to the salesman as my customer service officer is on leave. Im waiting for them to get back to me with a definite answer and a price. The last home I built with Allcastle was brick veneer and it didn't have any wall sarking. Re: Wall sarking/Wall wrap - is it worth it? 7Sep 21, 2007 9:14 am Quote: Thanks. Im getting R2.0 in the walls. Did it include in the basic price or it is a option you have to pay for it? Re: Wall sarking/Wall wrap - is it worth it? 8Sep 21, 2007 9:19 am rldragon2003 Quote: Thanks. Im getting R2.0 in the walls. Did it include in the basic price or it is a option you have to pay for it? A $240 upgrade from the standard R1.5 We also upgraded the roof insulation from R2.5 to R4.0 for $450 Re: Wall sarking/Wall wrap - is it worth it? 9Sep 21, 2007 11:16 am I'm amazed that you had to pay to ugrade your batts. So if you don;t upgrade how do you meet your 5 star energy efficient rating required in new homes? Or is this not applicable to all states?? Re: Wall sarking/Wall wrap - is it worth it? 10Sep 21, 2007 12:35 pm Cookiemonster The last home I built with Allcastle was brick veneer and it didn't have any wall sarking. Does your previous AllCastle house has R1.5/R2 insulation for external walls? I thought sarking was the blue aluminium thing on the roof, do you need that inside all external walls as well? Or was this extra, on top of the insulation been installed inside the wall? Re: Wall sarking/Wall wrap - is it worth it? 11Sep 21, 2007 1:48 pm To clarify - sarking, foil wrap, sisalation etc are generally one on the same.
Reflective Foil Laminate [RFL] is shiney both sides or coloured [blue] to reduce glare when trades such as brickies are working in front of it. In a weatherboard construction it has no thermal value [from outside] as it requires an air space on its face to be effective. In this situation it would be referred to as a sarking - to prevent moisture penetration. With some cladding products they require the laminate to be perforated so that the back of the cladding can breathe. Referred to as 'breather foil' and commonly seen as a light green product with heaps of pin holes through it. In a brick veneer construction the 'sarking' on the external wall frame would be referred to as RFL or sisalation as it is performing thermally because there is an air space [the brick cavity] on its face. In regards to the roof - with an iron roof the sarking works to stop condensation dripping from the underside of the iron and if it is dished between the battens creating an air space it works as an insulator. With a tile roof, under around 15 degree pitch, it is generally nominated to act as a sarking, to direct any water that penetrates the gaps in the tiles back down towards the gutter. The long & the short of it is that "foils ain't necessarily foils Sol" Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. Re: Wall sarking/Wall wrap - is it worth it? 12Sep 21, 2007 2:10 pm Sallyho I'm amazed that you had to pay to ugrade your batts. So if you don;t upgrade how do you meet your 5 star energy efficient rating required in new homes? Or is this not applicable to all states?? Most the builder move the standard the insulation from basic price to BAISX requirement(NSW ?), They Claim different council will have different requirement for the R value. Just another way they want to charge customer. Re: Wall sarking/Wall wrap - is it worth it? 13Sep 21, 2007 2:47 pm Reading between the lines 'sallyho' you may not have a clear grasp of the 5 Star system.
We won't talk about NSW because they like their BASIX. In Vic, Tas, SA etc the rating is taken on the envelope of the home and a points score target in relation to the homes location [climate zone] is required to attain 5 Stars. i.e around melbourne & the like 7 points is required. Mildura 3 points & locations designated as alpine 34 points. A house in melbourne just reaching 5 Star will be way short if it is shifted to an Alpine area & likewise an alpine home could be up around 8 stars in melb. To reach 5 stars a home may make the grade with super ceiling & floor insulation & yet have no wall insulation. In what I assume would pertain to Marks case, volume builders will generally have the minimum insulation requirement for their geographical area as standard and charge extra if it was required to be increased to meet the 5 star or basix requirement for a particular location. Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. Re: Wall sarking/Wall wrap - is it worth it? 14Sep 21, 2007 4:26 pm ahuang Does your previous AllCastle house has R1.5/R2 insulation for external walls? Yes. But no sisalation (thanks for the terminology lesson Ausdesign ) ahuang I thought sarking was the blue aluminium thing on the roof, do you need that inside all external walls as well? It does have a thermal benefit. It also help retain the wall insulation in place so they don't get pushed through by the plasterer on the other side. ahuang Or was this extra, on top of the insulation been installed inside the wall? I think we're about to find out that it's extra. ausdesign In what I assume would pertain to Marks case, volume builders will generally have the minimum insulation requirement for their geographical area as standard and charge extra if it was required to be increased to meet the 5 star or basix requirement for a particular location. Thats exactly right. However with R2.5 in the ceiling and R1.5 in the walls - the builders standard inclusion, we do meet BASIX requirements. I upgraded to R2 and R4 respectively to reduce our dependance on air-conditioning. Re: Wall sarking/Wall wrap - is it worth it? 15Sep 21, 2007 5:12 pm Quote: Thats exactly right. However with R2.5 in the ceiling and R1.5 in the walls - the builders standard inclusion, Not any more, I been told we had to pay it for R2.5 in the ceiling & R1.5 in the wall, which is the BASIX requirement. Re: Wall sarking/Wall wrap - is it worth it? 16Sep 21, 2007 5:19 pm rldragon2003 Quote: Thats exactly right. However with R2.5 in the ceiling and R1.5 in the walls - the builders standard inclusion, Not any more, I been told we had to pay it for R2.5 in the ceiling & R1.5 in the wall, which is the BASIX requirement. The Clarendons Springwood design comes with R2.5/R1.5 as standard - at least until the end of September. I've been told they're about to standardise their standard inclusions across there entire range. Re: Wall sarking/Wall wrap - is it worth it? 18Sep 24, 2007 5:37 pm Clarendon doesn't use wall sarking (sisilation) as standard. For our home it's a $1450 upgrade. Re: Wall sarking/Wall wrap - is it worth it? 19Sep 24, 2007 6:11 pm 3 rolls of RFL plus labour = $1450 ??? Peter Clarkson - AusDesign Australia www.ausdesign.com.au This information is intended to provide general information only. It does not purport to be a comprehensive advice. Re: Wall sarking/Wall wrap - is it worth it? 20Sep 24, 2007 7:18 pm ausdesign 3 rolls of RFL plus labour = $1450 ??? Thats what they quoted. How much do you get in a roll? 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 9781 Hey guys building a new place through a volume builder and just wondering if i should complain to the site supervisor as we just had plasterboard installed. Looks like… 0 11273 I am in the same situation, would you be able to give some insights in to this? I am in SA 8 17051 |