SIP, or Structurally Insulated Panel, is something that I have been aware of for the past two decades. In fact, I’ve dreamed of building a home using them in the 10″ wall variety along with the 10″ (or larger) ceiling variety. Unfortunately, SIPs are hard to come by down here in the state of Georgia (damn southerners 🙂 ). But, I deviate …
I know a lot of the SIP panel product manufacturers include channels inside the panels for running electricity. I know the basic code requirements for outlet box frequency, etc., but I wondered about whether or not in-wall boxing is a requirement vs. surface-mounted boxes.
Also, I wondered about the use of 4″ SIP panels for use on interior walls and the alternatives to running plumbing through a floor instead of a wall. Thought about the use of SIP panels in flooring as well but in conjunction with open-truss joists in order to running mechanicals.
Not sure even if I were to seriously consider these approaches if it would meet my local codes (Gwinnett, County, outside the Buford city limits, in 30519). Also, I have not gotten prices on SIP panels in +18 months, but the farther North I go inquiring on prices the cheaper they seem to get. For instance, found one manufacturer up in VT/NH ~2 years ago pricing $3-3.75/SqFt between 4″ and 10″ panels and calculated on a 40’x80′ ‘shell’ ranch-style on full-footprint walkout basement.
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r-control has a plant in Gainesville, GA so they are readily available here and should meet all local caodes. Electrical boxes are easy to install in them, especially with a router jig. We didn't have any trouble running electrical at all actually. I wouldn't use them for interior walls though I suppose you could. I don't see what the benefit would be.
Acoustical insulation. Especially if one plans on a home theater or music room. I did notice there was a place in Gainesville, but I thought they only manufacture and offer no services for erection. Still, it would be worth the quote.