Green Home Design
It seems like green home design is the only thing people are talking about. My client projects often take me down this path. Having some basic construction knowledge from the process of building my home, I found this video interesting. It is from a firm in Europe, but they claim this has been used in North America for 30 years. I have not seen this unless it is only common in manufactured housing.
Could this “pre-fab” method be the future of home construction for custom built homes? It looks fantastic and energy efficient. I would have to think that it would not be terribly expensive to produce either. Is this a good answer to more energy efficient structures?
I would be interested in seeing R values, as well as wind, snow & seismic load resistances based on panel thickness. If its inexpensive, this will most like be a template for future residential construction.
We quote u-values across the entire build, slightly different to the US model. With a 130mmm panel, lined with an insulated plasterboard inside (50mm thick), a 50mm cavity on the outside of the panel and 100mm exterior leaf of brick or concrete block (rendered) outside that, u-values come in around 0.16. Have a look here: http://www.sip-energy.com/JM/SIP%20Energy%20130mm%2050mm%20Warmboard.pdf
As for snow & seismic loadings - well, it’s not an issue in this climate - we have more issues with Wind and Roof Load, and the panels are very, very, strong - axial testing on a 2.4m x 2.4m panel recorded 337kN/m. Eccentric load capacity is limited by the capacity of the joist hangers (Simpson ITT), so panel is not the limiting factor. Bending came in at 2.7kNm/m and stiffness at 100 x 10(9) N/mm2/m
Sorry for the metric units, folks !!
BTW - in this market, SIP’s are a premium product, not a discount one, and are more expensive to make than an open stud TF frame. However, where SIP’s score highy is in airtightness. With airtightness accounting for 20%-25% of Building Energy Rating, here, that’s a big, big factor. Our 1st test house came in at 3.25m3/h/m2 leakage - this is a good score, and more to come !! It’s especially good at roof wall plate level.
Glad you liked the vid !!
btw - SIP info in US available at http://www.sips.org
Bear in mind, most US producers us expanded polystyrene - we use EXTRUDED - which in our opinion, performs much better, but it is more expensive………..all down to ‘horses for courses’ dontchaknow !!
da best. Keep it going! Thank you
Hello! Thanks for the post. It is really amazing! I will definitely share it with my friends.
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