Material Database - Graphite Polystyrene GPS SIPs

Everything concerning the adequate application of WUFI in the USA and Canada depending on local conditions e.g. architecture, building codes, standardization, laws et cetera.
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Ricky JGA
Posts: 1
Joined: Fri Feb 14, 2020 5:33 am -1100

Material Database - Graphite Polystyrene GPS SIPs

Post by Ricky JGA » Fri Feb 14, 2020 6:59 am -1100

Hello, we have designed a SIPs house using GPS panels. The database has a material for EPS but not GPS. I have been having trouble finding the properties (Bulk density, porosity, specific heat capacity, thermal conductivity, and permeability) It may be because this is a proprietary material. (I'm not sure) but was wondering if anyone out there has had better success than me getting this modeled in.

I'm sure it's pretty similiar to EPS but is supposed to have around 20% better R-Value so I'm not completely comfortable using EPS as a substitute.

Thank you

Christian Bludau
WUFI SupportTeam IBP
WUFI SupportTeam IBP
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Location: IBP Holzkirchen, the home of WUFI

Re: Material Database - Graphite Polystyrene GPS SIPs

Post by Christian Bludau » Thu Jul 14, 2022 8:49 pm -1100

Dear Ricky,
you may try to adapt the values from the database based on data from the manufacturers datasheet.
Further there is an EPS Grey 032 in the database, which may be similar to your material.

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