[Greenbuilding] Polyiso strength on roof

[Gennaro Brooks-Church - Eco Brooklyn]

ok....Your first link says EPS has 28 times more embodied energy than
cellulose, which is what I've read. It says wood is three times more than
EPS. But this is per cubic meter and you would never use any where near as
much wood as EPS in a home.
Your other link is to the site that is selling EPS homes, the same site
that fails to mention the high embodied energy of EPS, which either means
they didn't do their homework or they are purposefully omitting that info.
We know it is the latter. I don't trust people like that.
Another point that screams greenwashing:
If the salesman says it is recyclable, it's greenwashing.
If the salesman says it is recycled, keep listening.

These guys say EPS is recyclable as one of it's green points. Everything is
recyclable. It's a misleading comment.

I'm not bashing EPS homes. It's a great concept. I'm just saying I'm not
going to start building homes out of it until I see how its huge embodied
energy fits into the equation. Then I'm going to look into what it means to
live in a plastic house. If those two things pass then I think we've got a
winner.

Gennaro Brooks-Church
Director, Eco Brooklyn Inc.
Cell: 1 347 244 3016 USA
www.EcoBrooklyn.com
22 2nd St; Brooklyn, NY 11231

On Mon, Dec 8, 2014 at 9:55 PM, ErgoDesk <ergodesk at gmail.com> wrote:

> Depends on who and how you ask, here are some of my refs.
> http://www.evernote.com/l/AAL5N-jyW1lP0J92qy-R7MAlck9u9cCR_OQ/
>
> http://about.me/StyroHome
>
>
> On Mon, Dec 8, 2014 at 6:26 PM, Gennaro Brooks-Church - Eco Brooklyn <
> info at ecobrooklyn.com> wrote:
>
>> Topher you beat me to it. I was going to mention the 700 year old house
>> in Schwyz central Switzerland. Who is talking about OSB? Ergo before you go
>> touting the magic of plastic all I am saying is that you need to take into
>> consideration the massive amounts of embodied energy that EPS has. Have you
>> done those calculations? I would be curious. I did read an authoritative
>> article claiming that retrofitting an old house is definitely better than
>> raising it and building new in terms of energy used (both in construction
>> and life of the building).
>>
>>
>> Gennaro Brooks-Church
>> Director, Eco Brooklyn Inc.
>> Cell: 1 347 244 3016 USA
>> www.EcoBrooklyn.com
>> 22 2nd St; Brooklyn, NY 11231
>>
>> On Mon, Dec 8, 2014 at 7:37 PM, ErgoDesk <ergodesk at gmail.com> wrote:
>>
>>> Funny dude, you can't build that same 250-year-old house from today's
>>> OSB crap, nor can you find a 250 year old house that energy efficient.
>>>
>>> http://about.me/StyroHome
>>>
>>>
>>> On Mon, Dec 8, 2014 at 4:33 PM, Topher <topher at greenfret.com> wrote:
>>>
>>>> On 12/8/2014 7:20 PM, ErgoDesk wrote:
>>>> > Wood house needs rebuilding every 34 years
>>>>
>>>> Funny, I audited a 250 year old house just the other day.  Can you point
>>>> me at a 250 year old EPS building.
>>>>
>>>> The big trouble with EPS is the global warming potential, it requires
>>>> multiplying that embodied energy by roughly 1000.
>>>>
>>>> Thank You Kindly,
>>>>
>>>> Topher
>>>>
>>>> --
>>>> Topher Belknap
>>>> Green Fret Consulting
>>>> Kermit didn't know the half of it...
>>>> http://www.GreenFret.com/
>>>> topher at greenfret.com
>>>>
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>>
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