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Forums > Green Building Technologies > Structural Insulated Panels (SIPs) > Subject: Attic Insulation with SIP/ICF

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rnortmanUser is Offline
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Posts:94




08/03/2008 8:02 PM  
Well, for electrical you can go either way, but for plumbing it seems like a really bad idea to put it inside an exterior wall, whether it's SIPs or stick-built.  With the temperature differentials in exterior walls there is a risk of condensation inside the wall, a slight risk of freezing, but most importantly if you ever get a leak or need to replace pipe you are in trouble.

If your floor plan puts plumbing in an exterior wall, fur it out, or change the floor plan.

cmkavalaUser is Offline
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08/03/2008 8:13 PM  
rnortman;
that is a good point and we try to locate all vent stacks to interior walls or use mechanical venting.
The water supply lines can be run in the 1-1/2" furring space as well and is insulated from the exterior

Chris Kavala
chris@southernsips.com
1-877-321-SIPS
paulmUser is Offline
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Posts:14




08/03/2008 8:38 PM  
Boontucky-girl,
The site you lost track of may have been Gary Reysa’s www.builditsolar.com Great source of information about thermal solar/hydronic systems. Not as much about PV.

Please keep posting about your project. We're planning on building our retirement home in northern Missouri, probably not that far from you (all of the same weather stuff to deal with), starting next year-- ICF/SIP/Geo/Radionic/Solar, and have about a million things to learn between now and then.
Paul
Boontucky-girlUser is Offline
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Posts:87




08/04/2008 9:25 AM  
Thank you all so much for the discussion. I do firmly believe in putting piping in an exterior wall is a bad idea, so we are trying to design everything to be inside. But right now I can't say that we will achieve this 100%. Same with the electrical. I can think of the light switches right next to the entrance that I'd like to have right there. I currently have a light switch on the other side of the room and I hate having to walk in the dark to find it to get light, so none of that in the new house. And outlets along exterior walls, there are just some rooms I can't help but have to have those there.
DonaldsonUser is Offline
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08/04/2008 2:53 PM  
Posted By PanelCrafters on 08/03/2008 6:43 PM

Agony? That's just plain silly. Agony? Hmmm, what is your agenda?

No agenda, just the experience of trying to get the electrical wire to make the turn at a corner in an OSB sip, and.  It took a long time to get it to make the turn, that is the agony or frustration.  On a cement sip you have do cut away the cement and then mix cement to patch the wall. Dry wall is just easy to work with.

I am writing not as a professional builder but a DIY'er.  And for the DIY'er the easiest way to do something is sometimes the cheepest in the long run.  Also,  as a DIY'er we tend to make more mistakes and have to come back and add in or take a way.  Having the trades behind drywall instead of inside the structural wall itself makes sense as it makes for eaiser repaires or remodel.  The one trade that I didn't do was the electrical and I have had to re-do several things that the professional screwed up.  Thank God it was an easy cut away on the drywall and fix the problem and then mud the drywall back in!!!!!!!!!!!!!

This thread was started by a DIY'er so for one DIY'er to another I am giving some advice to make their build go the smoothest in the long run, IN MY MOST HUMBLE OPINION!!!!!!
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08/04/2008 8:17 PM  
Posted By cmkavala on 08/03/2008 7:59 PM
Fish wires, that sounds easy as a remodeling job.
Please explain how easy it is to add a switch and/ or receptacle after the drywall is finished?

And, how often must a box be added after the home is finished? And, are you trying to say, that it's impossible? "Agony"?

1-1/2" furring strips not only provide a clear electrical chase for future work, they provide for less sound transmision and additional insulation

There is no advantage when it's an added cost. It's not an additional cost with traditional OSB SIPS.

Are you saying there is no upcharge to fish wires? and you use more wire because you can't change direction wherever you want  - you have to follow the chases.
Heaven forbid if you want to add a recept. where there is not a chase, then what.....another remodel job?

Tin Man, your arguments are extremely weak. I really enjoy your attempts to justify the extra costs that your Tin SIPS require, but as they say, "They Don't Pencil".

....jc
If you're not building with OSB SIPS(or ICF's), why are you building?
cmkavalaUser is Offline
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08/04/2008 8:24 PM  
Great we are in agreement then, your going fishing and I'll save more trees

Chris Kavala
chris@southernsips.com
1-877-321-SIPS
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