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T O P I C    R E V I E W
Thronester Posted - 08/13/2019 : 10:48:06

Iím told the 2015 energy code will now apply to new construction beginning Thursday. I believe insulation will now be required not only in walls but under the floor in raised floor construction as well as ceilings, which may be tricky for any open beam ceilings https://codes.iccsafe.org/content/IECC2015/iecc-residential-provisions?site_type=public
15   L A T E S T    R E P L I E S    (Newest First)
kalakoa Posted - 09/04/2019 : 18:11:51
People need to be able to afford their homes.

Which need is not the concern of government. If it were, they would approve more housing. This problem is not unique to Hawaii.

I don't think the public version...

Exactly correct. Different rules apply to different people for different reasons, and most of the rule books aren't published. Nobody dares complain for fear of retaliation, which fact has even been reported in the newspaper.

protecting the public from unscrupulous builders or building practices

Building Department has been known to lack scruples, how do you protect the public from that?
YurtGirl Posted - 09/04/2019 : 14:48:44
quote:
Originally posted by kalakoa

It is the opposite of what they claim to try to be accomplishing.

Stricter building code requirements are intended to create jobs and boost the value of existing real estate.




People need to be able to afford their homes. I don't think the public version of the Building Department or IBC's mission statement is to create jobs or boost property values. They are supposed to be about protecting the public from unscrupulous builders or building practices.

Melissa Fletcher
___________________________
"Make yurts, not war" Bill Coperthwaite, 1973
Carey Posted - 09/04/2019 : 09:01:45
White roof is not the requirement, reflective is
HPM has had Durapon70 heat-reflective paint coatings on all of the metal roofing systems they sell for a few years, & many of the other metal roof sellers offer reflective or cool coatings as standard, or as an option:
https://www.hpmhawaii.com/custom-metal-roofing

kalakoa Posted - 09/03/2019 : 18:52:51
It is the opposite of what they claim to try to be accomplishing.

Stricter building code requirements are intended to create jobs and boost the value of existing real estate.
YurtGirl Posted - 09/03/2019 : 17:17:29
Agree 100% that's expensive. It is the opposite of what they claim to try to be accomplishing.

Melissa Fletcher
___________________________
"Make yurts, not war" Bill Coperthwaite, 1973
kalakoa Posted - 09/03/2019 : 17:03:38
It's a big investment to not be able to permit a residence, get insurance, etc.

It's a big investment to build a completely sealed house with double-paned windows and grid power to run the air conditioning 24x7. Perhaps the State should require residency applications and a means test for anyone intending to relocate.
YurtGirl Posted - 09/03/2019 : 15:58:58
I can not recommend to clients that they don't permit, protest movement or not. It's a big investment to not be able to permit a residence, get insurance, etc. But it sure seems like our county building department keeps pushing people that way more and more. No sense :( They should be working to help people build safe and affordably.

Melissa Fletcher
___________________________
"Make yurts, not war" Bill Coperthwaite, 1973
kalakoa Posted - 09/03/2019 : 15:38:03
Is there an exemption for residences that have no heating or cooling needs?

County is busy "learning about" the alternate standards.

Meanwhile, there's always "not bothering to get permits", which is now acceptable if your structure is part of a "protest movement".
YurtGirl Posted - 09/03/2019 : 15:15:10
Are there any professionals or people have navigated this new system that can chime in here? I have a letter off to county but no response yet. It seems a bit nuts to me to implement insulation requirements that obliterate decent ventilation and passive solar principals. Mold everywhere... And if it isn't ventilating, then we're forcing energy use because we'll need to use heating/cooling/dehimidifying power.

Is there an exemption for residences that have no heating or cooling needs? If there is no energy to conserve in the design, why are they even calling this 'energy codes' or allowed to slap it on everyone?


Melissa Fletcher
___________________________
"Make yurts, not war" Bill Coperthwaite, 1973
dobanion Posted - 08/26/2019 : 12:02:59
Yeah I know a bright white roof is ugly. But the first time you do the math on just how much heat energy is absorbed in a day on a typical roof vs a white one, you start to see the reasoning.
Thronester Posted - 08/19/2019 : 18:13:42
Yeah would be nice to not have people scrambling to get permits through before the deadline. Hopefully the dust settles soon and the county can draft up similar amendments like Maui and Kauai. The zone 1 tropical exemption doesnít seem too horrible. In fact it seems that many people tend to build like that anyway. Some of the takeaways that I got were if you donít have air conditioning, have paddle fans in the bedrooms and living room, operable windows on exterior walls of bedrooms, a latch for keeping bedroom doors propped open and large eaves to prevent direct sunlight through windows then the only major change I see the cool roof. Iíll be interested in seeing what becomes available for roofing and windows that satisfies the requirements. Who wants a bright white roof? LOL
kalakoa Posted - 08/18/2019 : 08:43:09
https://www.hawaiitribune-herald.com/2019/08/18/hawaii-news/strict-state-energy-standards-likely-to-raise-price-of-home-ownership-county-scrambles-to-fix/

Building a house on Hawaii Island just got a lot more complicated --‚ÄĒ and more expensive -- because the county missed a deadline to enact local exemptions to a strict new statewide energy code.

Hawaii counties had two years to implement changes to the International Energy Conservation Code, but neither the Department of Public Works nor the County Council initiated a new law to do so. Both Maui and Kauai passed bills to lessen the impact by taking their own particular climate zones into consideration.


Rhetorical: what was County doing for those two years? Passing a GET surcharge (twice), shutting down vacation rentals, scheduling "talk story" sessions about the lava "recovery"...
kalakoa Posted - 08/14/2019 : 08:35:05
contacted the code people about details of insulation requirements and options

I solved the problem by not asking for codes or inspections.
dobanion Posted - 08/14/2019 : 05:23:52
See section R401.2.1 Tropical Zone

Essentially, if you don't have air conditioning, no insulation in walls or floors required, and reduced ceiling requirements.

I think Hawaii is actually using the 2015 IECC with amendments.

https://energy.hawaii.gov/wp-content/uploads/2016/07/2015-IECC-with-Hawaii-Amendments.pdf

The above changes up the ceiling insulation requirement a bit, with a higher requirement (R-19) if you don't have a reflective "cool roof", and a lower requirement (R-13) if you do.

A exposed beam ceiling should still work. One layer of 2" foam board on the roof plus a white (reflective) steel roof surface would meet the requirements of the code.

When I contacted the code people about details of insulation requirements and options for a shall we say, unconventional dwelling, they sent me a link to this:

https://energy.hawaii.gov/wp-content/uploads/2011/10/CommercialBuildingsGuidelinesforEnergyEfficiency2004.pdf

Yeah I know it says commercial, but I was told you can use the commercial system of passing requirements. The advantage of this system, if applicable, is that it works in a radiant barrier as a option to reduce the R-value requirement. In some cases, a white roof combined with a radiant barrier removes the insulation requirement entirely.

They have several combinations of roof surface, insulation, and radiant barriers that are acceptable. They have a calculated value that combines the three things (insulation, reflective surface, radiant barrier) to give you a single number to pass. They call this the RHGP (roof heat gain factor). See section 6.
Seeb Posted - 08/13/2019 : 17:47:55
The underfloor insulation would be a disaster

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