Watch Us Build a Passive House in New Zealand - Episode 2

[@tealkerberus748]

Looking forward to doing this myself in the foreseeable. My design is a lot less dependent on plastic, but the energy target is on par.

[@wongnigel1158]

Fantastic editing showing before and after of each detail

[@Style-plus-renovations-NZ]

Nice work guys.

[@CarnageCX3]

Great work guys from a fellow Australian.

[@robertpartridge7852]

So good. So so good

[@gking3551]

Awesome video guys!

[@marksaunders3767]

Great to see this. Look forward to the next ones

[@compound__]

Thanks Mark. Stoked to hear you are enjoying the series.

[@jamieoconnor4342]

Wicked! Cool roof detail

[@joeltunbridge2328]

Great stuff guys, love your work.

[@peterfokinpan8063]

Love the video. Though it always amazes me how "stupid" houses are built here in nz. I lived in germany for over 20 years and stil cant help but giggle looking at the quality and insulation round here. Built a nz style house myself though

[@Ladybirdsin16mm]

Are you able to use untreated timber framing? Going to be building soon, but thought the only option was treated timber frames

[@TroyP]

Can you give the blower door ACH looks like you will have amazing airtightness!

[@compound__]

The results from our blower door test will be shared in the next video. Thank you for watching, Troy!

[@elizacentracchio817]

Great stuff guys. What is the reason behind the poly flashing on top of the roof battens?

[@compound__]

Hi Eliza, this is to prevent a chemical reaction between the iron and the treated timber

[@hendrikx1991]

Great work guys, lots of communication going on to achieve such great work. Waiting for the next episode! Is is also possible to use the air/vapor control layer on the outside (on top of ply/osb) then use ridged insulation board. Then after this cavity with cladding on top? This would take away the fussiness with the vapor control layer on the inside. Keep up the good work, wish I could visit the site, living in QT myself. Also what ventilation system you putting in?

[@compound__]

Hi Nicky, yes we think this would be possible. In the future we would love to do a rigid insulation layer install on the outside of our wall sheathing/rigid air barrier. It comes down to cost, time and performance. This wall makeup worked for this project based on the above, though with the industry changing it is becoming more cost effective to use Sips. We are looking forward to using Sips panels for two projects commencing soon. Your welcome to visit the site :)

[@paullambert2668]

Do you get issues with penetrations through the gib? It seems that when your vapour and air tightness barrier is on the inside of the wall cavity, then every power point or fitting will be a penetration through that barrier. In the US I see people pushing the vapour barrier to the outside of the framing (just under the sheathing), then the insulation outside the sheathing - which gives good protection from thermal bridging, and also means you have far fewer penetrations in the membrane.

[@compound__]

Hi Paul, we have very minimal penetration through our vapour barrier. We achieve this by using a internal wall service cavity between the vapour barrier and the finished wall linings. This gives plumbing and electrical their own framing line to run all services without effecting the insulation or vapour control layer. We have found this very effective

[@paullambert2668]

@@compound__ Ah, super interesting. So in effect an insulated wall, then the membrane, then some additional framing/battens, and then the gib. I like that as a concept, although it of course makes the wall thicker and therefore your rooms smaller. But it'd be really nice for running services.

[@KarlBeardsley]

What's the name of the rab product you are using with the 10mm of polystyrene attached on the exterior of the wall please?

[@compound__]

Hi Karl, the product is RIGIDRAP-XT

[@markm4458]

@@compound__ The IBS website says that the XT product is not designed for timber framing. You obviously don't think it's a problem. What fixings did you use for the sheets?

[@compound__]

@@markm4458 Build science & engineers calcs tells us this is not an issue at all. We used Delfast 65mm stainless screws. Using a quick drive screw gun made for an easy install and control of depth. We would love to see more insulation on the sheathing here in NZ, similar to ZIP-R sheathing in the US.

[@kytddjj]

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