[Greenbuilding] Unifoam vs Plastispan

Lynelle Hamilton lynelle at lahamilton.com
Tue Oct 3 17:54:06 CDT 2017


Thanks, John!


On 2017-10-03 6:38 PM, John Salmen wrote:
>
> Plastifab EPS foam as a geo-foam has been used under roads bridges 
> buildings etc for a long time. The moisture intake is very small and 
> useful I think in that it can store and release small amounts as needed.
>
> *From:*Greenbuilding 
> [mailto:greenbuilding-bounces at lists.bioenergylists.org] *On Behalf Of 
> *Lynelle Hamilton
> *Sent:* Tuesday, October 3, 2017 3:25 PM
> *To:* Green Building
> *Subject:* [Greenbuilding] Unifoam vs Plastispan
>
> I am insulating under a floating pad. The engineer has specified 25psi 
> under the slab and 30 psi on outer edges. I've been looking at two 
> products: Unifoam 25/30 and Plastifab 25/30. Aiming for R35 under the 
> slab.  Price differential is significant (Unifoam is nearly $3000 
> more) for the house.
>
> Has anyone had experience with either product? From the specs, Unifoam 
> appears to absorb less water and has less deflection, but both are 
> within the ASTM spec for the issue.
>
> Many thanks for any insights!
>
> Lynelle Hamilton
>
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