Re:The Third Phase of Clean Energy Will Be Most Disruptive Yet
by mobilefriendly on Wednesday April 03, 2019 @08:20PM
(#19568360)
There's a lot of greenwashing in the insulation business. Rockwool uses coal to melt stone, binds the fibers with formaldehyde, and puts the coal ash waste in the final product. That's not something I want deteriorating in my walls.
Re:The Third Phase of Clean Energy Will Be Most Disruptive Yet
by vkou on Wednesday April 03, 2019 @04:50PM
(#19567168)
> Passivhaus does not mandate plastic based insulation... wood fibre,straw bales...
So, I presume that in the case of a fire, they go up like a match?
Re:The Third Phase of Clean Energy Will Be Most Disruptive Yet
by jgamman on Wednesday April 03, 2019 @05:09PM
(#19567283)
i think you're confusing a haystack with a compressed straw bale - IIRC the fire resistance of a compressed straw bale is excellent. it singes on the outside but it's v difficult to burn through.
Re:The Third Phase of Clean Energy Will Be Most Disruptive Yet
by dangravell on Thursday April 04, 2019 @09:24AM
(#19571976)
Plus, regs in your locale should cover this, but always good to DYOR.
Passivhaus is not focused on one metric. To achieve passivhaus there are many metrics measured. Energy use, overheating, air quality, thermal bridging... The list goes on. I'm not sure what one metric you're referring to.
Passivhaus does not mandate plastic based insulation. Many are built with cellulose, wood fibre,straw bales...
They are not in any way more prone to water intrusion any more than any other building.
They are far less likely to suffer sick building syndrome because ventilation standards are far higher than for 'normal' houses.
You can open the windows if you want. Sure, if you do it in -10 temperatures you lose some heat.
Passivhaus 'nutters' are generally apathetic about PV. You don't need PV ; simplicity is part of the point. The marginal cost on insulation is generally pretty low. The difficult but it's getting builders diligent enough for the challenge.
Hope that helps to encourage you to continue researching the subject.