Latest / Early Edition with Ryan Bridge / Nick Clements: YourQS Author on the Government overestimating the cost for new home insulation standards

Transcript

Nick Clements: YourQS Author on the Government overestimating the cost for new home insulation standards · Early Edition with Ryan Bridge

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  Speaker 1: Remember the insulation debate new h one insulation standards. The
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  Speaker 1: Minister Chris Penk said, well, he didn't say, but he
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  Speaker 1: quoted figures that it could be around forty to fifty
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  Speaker 1: thousand dollars extra to meet the new standards per house
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  Speaker 1: that's been built. He said that in July, and now
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  Speaker 1: we've had some numbers done. It could cost as little
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  Speaker 1: as two thousand, two hundred dollars to add to a
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  Speaker 1: new three bedroom house. That's according to Quantity Surveying, your
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  Speaker 1: QS who put the numbers together for ebos and New
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  Speaker 1: Zealand Certified Builders and Nick Clements is YOURQS author. Nick,
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  Speaker 1: Thanks for being with us this morning. Reilly, tell me
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  Speaker 1: what is that two thousand, two hundred dollars estimate? What
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  Speaker 1: is that for?
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  Speaker 2: So that's the cost impact of meeting the new ah
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  Speaker 2: Onne standard, which changed for the twenty twenty three last year.
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  Speaker 1: Is this for the country wide? The average? How big
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  Speaker 1: a home are we talking?
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  Speaker 2: It was a two bedroom about one hundred and forty
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  Speaker 2: square meter two story. Our three bedroom, two story one
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  Speaker 2: hundred and forty square meter home based on the Orkhan
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  Speaker 2: regions are sort of the upper half of the North.
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  Speaker 1: Island, Okay and is this if you if you start
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  Speaker 1: the work on the H one from design phase.
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  Speaker 2: Yeah. So with H one, there's two ways of complying
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  Speaker 2: with the standard. There's something called schedule method and then
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  Speaker 2: the other option is calculation method. So how I describe
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  Speaker 2: it to peoples, there's four different levers that a designer
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  Speaker 2: can pull to enable them enable their design to meet
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  Speaker 2: the standard. And those levers are the insulation and the
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  Speaker 2: thermal performance of the floor, the walls, the windows, or
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  Speaker 2: the ceiling, the roof. And if you do it by
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  Speaker 2: schedule method, it basically pushes all of those lead leavers
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  Speaker 2: to ten. So it basically ensures that the building complies
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  Speaker 2: by making sure everything is up to a particular standard.
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  Speaker 2: But what the calculation method allows a designer to do
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  Speaker 2: is work out the film performance of that particular building,
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  Speaker 2: so that design that a size floor area, wall area,
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  Speaker 2: window area, and then they can pull each of those
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  Speaker 2: levers individually to meet a design criteria so it meets
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  Speaker 2: the performance required for the standard. And the thing is
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  Speaker 2: that each of those levers has different costs. He'd click
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  Speaker 2: on that lever costs a different amount of money. And
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  Speaker 2: what we did with the exercise, where is basically looked
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  Speaker 2: at each of those leavers. I looked at what was
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  Speaker 2: the in that case, what was the minimum we could
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  Speaker 2: do to meet the standard, and what was the cost
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  Speaker 2: of each of those ex changes. And so you're able
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  Speaker 2: to basically it's a bit more refined than what the
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  Speaker 2: schedule method is. The schedule method puts everything basically the
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  Speaker 2: most extensive option, really okay, whereas the calculation method you
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  Speaker 2: can refine.
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  Speaker 1: So you haven't obviously done a lot of work on this.
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  Speaker 1: The minister hadn't. He was using numbers that were given
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  Speaker 1: to him by a few random builders. Is there any
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  Speaker 1: way it could cost forty to fifty thousand dollars for
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  Speaker 1: a house, a three four bedroom house, as he's indica,
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  Speaker 1: I don't think so.
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  Speaker 2: No, No, it would seem it would seem pretty high.
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  Speaker 1: Is there a difference? Can you are there? Is there
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  Speaker 1: an allowance for a difference per region, because it's obviously
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  Speaker 1: warmer up north than it is down south in these standards.
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  Speaker 2: Yeah, in the in the code is what they call
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  Speaker 2: us that our rating, which is the indication of the
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  Speaker 2: film work performance. And so you've got to meet a
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  Speaker 2: different a venue down south than you do in the
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  Speaker 2: in the North Island, right, but it wouldn't and it
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  Speaker 2: would be more extensive to meet that higher avalue because
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  Speaker 2: you've got to have a higher performing component to get there.
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  Speaker 2: But I don't think. I didn't actually do the exercise
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  Speaker 2: on the other parts of the country, but I don't
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  Speaker 2: believe it would make that much of a difference.
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  Speaker 1: All right, thank you very much. A few times this morning.
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  Speaker 1: Sounds like the Minister will be taking this one on board.
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  Speaker 1: Nick Clements of us, the your QS, author of the numbers.
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  Speaker 1: They've run the numbers on the new H one insulation
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  Speaker 1: standards and found actually it's a fraction of what we
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  Speaker 1: were led to believe.
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