10 Jun 13 11:18 AM
I have a question for the ventilation experts.
I understand that a Passive house will have a highly efficient balanced heat recovery ventilation system.
I think I understand the basic principle of h......read more
27 May 13 12:38 PM
We purchased the heat exchanger unit from Avon electric, they also go by the name of Cleanaire. Yes it does recover heat from the house (not the roof space). No draughts and you can’t hear ......read more
22 May 13 1:21 PM
these guys look like they could help:
offices in Wellington, Christchurch and Auckland...read more
21 May 13 12:16 PM
Do the ribs act as a thermal bridge thus reducing that excellent R8 value?...read more
20 May 13 9:22 AM
Excellent questions. I am really pleased someone has raised these questions as I have thought the same thing myself. The option that I chose was mechanical ventilation BUT I would be very i......read more
15 May 13 12:29 PM
You have explained a lot better than I did, the point I was trying to make with Solarei...read more
8 May 13 12:21 PM
The Passive house standard is NOT specific for one climate or style of home/building. Buildings have been built to the Passive house standard all around the world and they aren't even all ho......read more
2 Feb 13 7:28 AM
I thought someone a lot more knowledgable than me might have answered this for you by now but as they haven't I'll add my little bit and direct to a place of huge knowledge.
I think you d......read more
9 Dec 12 3:03 PM
as this is house, yet to be built you should be able to carry out detailed heat loss calculations. With these you would be abe to easily calculate how many watts of heat you would need to main......read more
9 Dec 12 7:19 AM
Is aerogel insulation available in NZ?
Has anyone used it in a domestic insulation situation?
Any idea of cost?
Having done a quick google, there were some reports back in early 2012 of the price a......read more
16 Nov 12 8:15 AM
Can anyone recommend a supplier of insulated blinds, preferably canterbury based?
I came across this UK company..I wonder if there is anything similar here in NZ?
14 Oct 12 8:23 AM
I have wondered this too. My guess is that becasue OSB can't tolerate moisture very well it creates a problem here with most of our houses designed to have drained and vented cavities, so t......read more
13 Oct 12 11:06 AM
Have I missed something...I don't know who GW is or what company or products he represents! I am curious , as , I expect, quite a few other people are.
GW's posts have been blunt, that's true, but I'......read more
7 Oct 12 10:38 AM
Have you looked at what Casper and Ellen are doing with there certified passive house?
They are using an ICF system.
When you say" moi......read more
12 Sep 12 1:01 PM
Hi Red & Black, I think what skamp is suggesting is excellent advice. Everyone's build stuation is complex and unique and the choices are infinite but the budget isn't! I have just gone through some o......read more
8 Sep 12 7:47 PM
I can't really help with the cost difference question but your alternative of using 90mm frame and cavity battens sounds pretty good. However you probably don't need to put the battens onto the studs ......read more
31 Aug 12 7:50 PM
These are Stunning looking and no doubt are very high quality windows, I wonder how they compare cost wise to other high end window products ......read more
14 Aug 12 12:09 PM
Do you calculate quantity of pipe required?
pipe spacings, etc...read more
27 Jul 12 12:26 PM
Congratulations to Casper and Ellen on getting your Passive house underway. Thank you for posting. It is interesting that there are now quite a few certified passive houses, zero/low energy and very l......read more
11 Jul 12 9:43 AM
R1.0 for windows locally? Presumably this is Triple glazed?...read more
25 Jun 12 7:14 PM
I thought this was interesting and worth posting. however, if anyone wishes to comment please be polite.
23 Jun 12 9:39 AM
I,m looking for suggestions on cost effective methods of increasing the thermal mass of a yet to be built timber frame house.
My thoughts at the moment are to add some mass to some of the internal wa......read more
19 May 12 4:52 PM
Ehaus are inviting people to attend this:
16 May 12 12:03 PM
yes, they look great!
Although no technical data on U values and airtightness available on the website.
Is this a business opportunity? Have you offered your services for New Zealand distri......read more
15 May 12 10:40 AM
Sorry if I missed something but why have you ruled out PVC and timber frames?...read more
13 May 12 11:22 AM
Be careful how you calculate that "payback"
A house (double glazed) around my area that would sell for around $430K would actually only fetch around $370K if it was only single glazed, (unb......read more
3 May 12 12:22 PM
Do you know if the 1Kg of pellets providing 5kW of heat energy for an hour is a measured value or a calculated value...if calculated do you have the calcs available?...read more
28 Apr 12 7:04 PM
Also came across a whole load of technical articles and building science papers which may interest some of you. Some may not be relevent to New Zealand buildings but I think there is some interesting ......read more
23 Apr 12 7:15 PM
I couldn't resist posting this link
On the one hand it is good to see a mainstream group housing company at last recognising the market for ......read more
19 Apr 12 1:17 PM
So, would you have any recomendations for window suppliers that are more helpful?...read more
19 Apr 12 12:25 PM
"In a thermally efficient and correct design the windows MUST be in line with the insulated part of the wall. This is not possible with NZ style aluminium windows but normal practice with the Eur......read more
19 Apr 12 9:01 AM
Can you explain more about positioning the windows back into the insulated part of the wall instead of on the outside, cold part.
I can understand the theoretical advantages of putting the......read more
16 Apr 12 7:05 PM
I came across the buildingscience.com website today. there is a lot of information, most of which is beyond my understanding, but one article that I thought might interest others can be downloaded at ......read more
15 Apr 12 8:49 AM
Although only a 90mm frame I think they will have a service cavity (perhaps 50mm) which may reduce this thermal bridging and also have some more insulation. They haven't shown this part yet....read more
15 Apr 12 8:09 AM
I thought this was interesting
I wonder whether Australia might be able to do something like this? Somewhere in Northern Territory?
14 Apr 12 8:45 AM
Where is the best place for a hot water cylinder?
Well, ideally I assume within the warm space of the house (not outside or in roof space) AND centrally located so that pipe runs to the hot water out......read more
1 Apr 12 7:10 PM
I found this short youtube video with a brief summary of the importance of airtightness and reference to possible mould issues..it is part of a Proclima marketing but I nevertheless still worth postin......read more
13 Mar 12 11:26 AM
This link is to a paper that explains the basics of the breathable wall concept. I found it very informative. Although a European publication it is very relevant to our climate.
11 Mar 12 6:15 PM
Would a granite kitchen bench provide any effective thermal mass?...read more
11 Mar 12 8:16 AM
Is this product any use?
9 Mar 12 12:21 PM
Grand designs mentioned an interesting product which might be related to your mystery film, JD?
It was called heat mirror
9 Mar 12 11:17 AM
Doesn't sound likely with the outdoor temperatures we experience. Perhaps this is in florida?
Can you ask these people for a bit more info?...read more
20 Feb 12 6:30 PM
I think you will find this thread very interesting
Others who have insulated their fridge!!...read more
17 Feb 12 6:52 AM
I think you'll find it called extra-low voltage
and in this case, provided it is isolated from the 230volt system could be done as non prescribed work
17 Feb 12 6:43 AM
16 Feb 12 11:25 AM
Apologies if this has been raised before but I believe
All recessed light fitting used in NZ must be marked with either IC-F, IC or CA symbols Or if no symbol then they should be marked as NON IC and......read more
11 Feb 12 8:54 AM
I stumbled across this website today
in my attempt to learn more about interstitial condensation.
I downloaded the free trial version of the dew point calculalator
Some of th......read more
9 Jan 12 7:51 AM
This should interest a few of us
5 Jan 12 5:59 PM
Try these two links specifically about earth walls
11 Dec 11 7:38 AM
There is a group being set up in Christchurch, which is similar to what you are proposing...