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| Looking for anyone who has used this product. I'm told it just came out this year and is a 3in1 product that would replace traditional osb, rigid foam board and housewrap in one application. I've just started building my house in NE Georgia and was planning on using osb and house wrap only. My exterior framing is 2X6 on 16" centers and 10 foot walls. I intend to use damp sprayed cellulose between the studs giving me a R-21.
The price of this product is roughly 4 times the price of OSB. The 1/2 inch sheet gives a R-3 value. Would this product be cost effective in a hot summer mild to cool winter climate? |
Here is a link that might be useful: Dow Styrofoam SIS
Follow-Up Postings:
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- Posted by sierraeast (My Page) on Wed, Aug 27, 08 at 12:37
| If you go this route, you might consider pricing osb,wrap, and foam board panels out seperately and compare to the dow system. Other considerations would be that running seperately would be a tad more labor intensive as im assuming the dow system would install in one pass. |
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- Posted by geraldo_linux (My Page) on Wed, Aug 27, 08 at 13:10
| New here, usually on Orchard forum. I do a little building. Any time I have investigated anything new (SIPS,ICFs, etc.) they turn out to cost too much for me. I am pretty sure four times as high as OSB is too high for me. I live in Eastern Washington and, for example, we get framing done for about $7 using recent legal immigrants. It is a depressed area so we need to build as cheap as possible. Also when we deal with someone new we have to take the time to ask exactly what is included in their quote. Sometimes it is surprising. It always comes back to conventional built for me. I use the KIS method. Keep it simple. Also if you will notice that website states it is in "market test". IMHO YMMV |
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- Posted by sierraeast (My Page) on Wed, Aug 27, 08 at 13:38
| Old schoolers generally stick with tried and true. There are so many "new" materials/technology out there these days that will make any head spin. Leading to a bottom line is that it's a pretty safe bet to go with what high end, reputable builders are using on homes in your area that works, builders concerned with energy saving techniques. |
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| Not available here yet. Pricier than I thought. An alternative would be to use t&g XPS as sheathing, if permitted, or add it to the exterior of the OSB with or without a housewrap. In a cold climate, following Building Science's recommendations, on this home I used 1" t&g XPS as sheathing with no housewrap, blocking the 2x6s all way around on both floors.
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- Posted by duckwacker (My Page) on Wed, Aug 27, 08 at 18:13
| Thanks for all the input so far. The local building supply is pushing this product. I have seen a sample of the 1/2 inch thick product. It has a thin fiber backing and what looks like Isocyanurate insulation in the middle and a waterproof film on the outside. Doesn't appear any sturdier than rigid foam board. I'm just trying to build the most energy efficient house I can without over doing it. I don't mind being cutting edge but I don't want to take on an experiment. Keep the comments coming! |
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| Why is the store pushing it? We'll never know, but that sort of thing always bothers me, especially with a new product. I like introductory offers but I don't like being a guinea pig. Toss me into the old-timer's pool. I want to see and hear about at least ten years of real life use before accepting a 'new' product. EIFs are an example of why. My feeling is that you can have quite a lot of already-tested insulation for the cost difference of this product. |
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- Posted by energy_rater_la (My Page) on Fri, Aug 29, 08 at 14:40
| have you looked at SIP's? like everyone else the SIS is a new product to me. I'll look for more info & input. |
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- Posted by energy_rater_la (My Page) on Fri, Aug 29, 08 at 14:53
| SIP's is osb on both sides, where as SIS is osb to interior of house, dow to exterior. Will you be getting a decent price? best of luck. |
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