New Zealand is OBSESSED!! with Pink Insulation
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- Опубліковано 24 чер 2024
- Pink Batts is the most popular insulation product here in New Zealand. In this video, we will talk about the different options for insulating your home. We’ll cover the advantages and disadvantages of each,
And stick around to the end of the video where I’ll explain why I think fibreglass insulation is so dominant here and why pink batts have become the leader in the insulation market. If you like this kind of content please consider subscribing!
I’ve done a number of home renovations…every time I’ve removed the drywall the batts have been black with mold. Horrible horrible product! But in NZ we will always go for the cheapest nastiest product. Fletchers has the NZ market brainwashed! Im advocate of PIR foam and while it offgasses in the beginning it stops and becomes inert in a matter of days and will remain hydrophobic and is also a much better insulator which = a much healthier home
Good overview. I went through the exercise of adding insulation to my large 1977 home a couple of years ago. It already had pink batts in the ceiling and walls but nothing underfloor. I have another property which has the polystyrene underfloor and went away from using it because of the installation mess you mention, and despite the Expol concertina system they still have to have clips to hold them in place and I'd had the odd one I'd had to refix. I'd also seen the sag issue with batts so in the end went with the Mammoth recycled polyester. I did have to figure out how many bales of each of the widths I'd need based on the floor joist spacings, and had to cut many of them to length which was easy with a sharp bread knife but they press into and stay in place well as long as cut to the right size and it is a pretty clean job. The underfloor ones have held themselves in place securely since without the need for any clips etc. In the ceiling I used 200mm R3.2 Ceiling Blanket which came in a roll and was relatively easy to lay out over the top of the batts and between the trusses. It was also easy enough to cut with a bread knife. The house has a noticeably different heat characteristic and is much more comfortable both summer and winter now. The basement became a fridge because the heat wasn't radiating through the floor, and upstairs three days after installing it the floor warmed up underfoot. Most interesting and worthwhile.
The Native New Zealand Pink Batt.
Polystyrene’a other disadvantage is that it reacts with the plastics in electric cables (tps) so a more expensive cable style (purple sheathing) or mechanical protection (conduit) is required
Rock wool wins. 🇨🇦 Recycling the product at 5:36 would be a nightmare when a house needs to torn down. Thank you.
Because of the buildings material cartel that won't let superior solutions into the market?
Rockwool is the best regarding: Fire, Sound and water, but it cost more.
I'm going to build a house in Amberley, north of Christchurch. In addition to Pink Batts, my architect has recommended Kooltherm K5 phenolic insulation boards between the timber framing and the outer cladding. The phenolic foam adds about R2.2, and also avoids thermal bridging through the framing timber.
And the added cost for an average 3 bedroom house to do that would be somewhere between 10-15k....housing is already expensive enough in NZ, but if you have the budget for it in CC it may be worth it.
@@edw9623Kool therm is outrageously expensive
There are comparable products without branz appraisals available in nz for 1/3 of the price.
Having moved to NZ from the UK, I’m still surprised that PIR/foam board insulation isn’t more common. The R values are super high for the thickness of the material, but sadly, I think the small market and cost means it’s still a niche product.
These videos are super helpful!
I recommend knopped blown in wool for you ceilings. Its a combination of sheep and lama, cost effective and clean. We notice the difference between glasswool and natural wool.
Sheep wool doesn't create dust coming down (we have a 1910 build with original art deco ceilings) and so far it's rat free, something I can't say from glasswool (pink batts turned yellow from 10 year rat pee). We fumigated and sprayed all timbers with borer bash top to bottom before re-insulating.
Our ceiling is 107m², 57m² has R3.6 polyester insulation + 150mm R3.0 wool knopp insulation, the remainder 50m² only has 150mm R3.0 wool knopp insulation. R6.6 over the livingroom kitchen and hallway, R3.0 over the bedrooms.
We are in the process of installing R3.0 underfloor retrofit with rigid glasswool sheets and R2+ in the walls, incl internal walls, when we renovate room by room.
When we bought the house it was on its original totare stumps, now the house is a minimum of 600mm of the ground. This not only save against damp but also woodworm and rot. Make informative choices, hopefully you only have to do this once (per house😅)
I've recently did ceiling insulation (rodney area). My father was around and he's an inspector up in northeastern europe.
Here's his observations:
1. fiberglass isn't used anymore.
2. rockwool everywhere (my installer didn't have that as an option).
3. plastic film is needed so that humidity from home isn't absorbed into insulation.
Bonus - we went to see friends house being built. Same as you said - up in europe they use rigid insulation for walls. Can't remember why exactly why. Maybe because it was easier to handle.
Great video josh. Yes availability is a factor. Personally my perfence is the terra Lena wool blend insulation as it's moisture resistant, fire resistant and breathable. It's nice and easy to work with along with being made from wool offcuts and holds its shape. Pink batts are ok but from my experience they don't breathe as well as wool blend
grate stuff!
Have you seen the wood fiber insulation being introduced by companies like Steico? NZ loves wood construction, why not wood insulation? :)
Those R values you quoted are imperial numbers for the USA market, pink batts is upto around R2.8 for 90mm thickness, there is also Polyisocyanurate (or PIR) boards, the highest performer per mm of thickness, good for raked/cathedral ceilings where rafter depth is usually insufficient to fit the required batts, also, as the rafters are not straight or square you will have to deal with any gaps. XPS polystyrene is extruded, only slight better thermal performance than EPS, plus you dont have al those beads blowing around as you mentioned. EPS is about the same thermal performance as batts per mm of thickness. SIP panels only have mediocre thermal performance if using EPS (most commonly used matreial), very good video otherwise - Building energy assessor
@brianclarke1695 curious as to why would you say SIP only has mediocre thermal properties?
Designed to have SIP splines where possible, they are pretty sweet. Decent air tightness out the gate.
Kiwis would never pay for Gapotape or similar around PIR boards placed between members, so installation will always be a problem, but super useful as a warm roof, or outsulation.
Pink batts are the dog shit gold medal winner when it comes to thermal envelope insulation. Sooner kiwis get pulled into the 21st century the better. 😊
hi what would you recommend to insulate under wooden stairs. The underside of the wooden stairs is concrete walls and floor open to the crawl space. I want to DIY it but I'm not sure of the best option
I didn't think pink batts was the go to in NZ anymore, most construction sites I see now use knauf earth wool insulation, another glass fibre product, I found it to be less itchy then pink batts and Bradford gold.
But it's unfortunate that rockwool and similar steel slag products are absent from the NZ market.
what about the lovely insul fluff ? its by far the worst insulation to work with!!
Next would be the GIB, why is it called GIB and why are they dominating the market, same with Pink Batts.
I mean, what would you use besides plasterboard? Fibro?
@@nathanbedford3443not all plasterboard is GIB I think was the point. Ie Fletchers have the dominance in NZ of that product too. Fletchers is one of the main reasons that the NZ building regs are a joke when compared internationally.
I’ve been a draftsman for NZ residential houses since 2014 and all of the projects I did use GIB. There was a time where GIB is scarce, the house is ready for lining, and the council is asking for a “minor variation” for GIB replacement. In fact, on June 2022 NZ MBIE published the Product Substitution for Plasterboard.
@@nathanbedford3443 I used BB Plasterboard once. The rest is GIB
@@MrRENZsalas group home builder? Use another bracing method. No problem with plasterboard substitutions then as it’s not structural.
Fibreglass dominates the market because House bashes don’t offer anything else outside the box
NZs rigged housing market, industry, building code etc. Common sense is optional