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IndianaFred
Registered Users
Posts:6
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| 09/19/2008 8:18 PM |
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| I'd like to ask some of you ICF pro's a few of questions. 1. In the general terms of building a single level home with a crawlspace and 8 foot ceilings with ICF's what would be a reasonable cost per sq. ft. to pay? 2. When building up from the footer, would it be practical to use CMU to ground level then ICF, rather than ICF from the footer? And if CMU are used does that compromise the wall strength? 3. Lastly, to save costs would a novice( with some homeowner DIY experience) save money erecting the ICF's and have a contractor come in and finish? Or just ask the ICF contractor if you can help in the build to save costs? Thanks, I look forward to your professional responses. |
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SoCalScott
Registered Users
Posts:40
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| 09/19/2008 9:32 PM |
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Fred -
reasonible costs? hard to know w/o details ( shape, openings, corners, location, wall thickness, etc....) are you talking materials and labor or just labor? you can do materials takeoffs by referencing the estimating section of your ICF providers manual and calling your local ready-mix and rebar retailers for pricing. Labor depends on local wages, and complexity of your project.
If you are doing ICF for the walls it makes sense to go all the way down to the footer w/ ICF. One continuous wall all in one step. You can pour ICFs in up to 12' lifts (recommedned maximum). Just run a ledger board for your floor system (assuming you are using TJIs) again reference your ICF suppliers tech manual for different ledger options.
Lastly, depends on your experiance/capabilities. If you have some sort of a const. background and pay a nominal fee for consultanting (either from ICF rep or experienced local ICF installer), you could save money, but how much and how confident are you in your capabilities? If you mess up it is on you, if your sub messes something up, you have recourse.
I have seen a number of owner builders do their own projects quite successfully, but ny no means is ICF "so easy anyone can do it"
Good Luck! |
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IndianaFred
Registered Users
Posts:6
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| 09/19/2008 9:42 PM |
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| Thanks for the advice, my plan is a simple ranch in an "L" shape with two car attached garage. Can the roof design play a role in cost of ICF's? Initial plan was a gable roof with ICF gables extending above the roof line. Wondering if a hip roof would be more economical way to go? I would be using trusses on either to lower costs! |
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SoCalScott
Registered Users
Posts:40
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| 09/19/2008 11:11 PM |
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You would have to go to your local truss company to get framing package estimates. Also, depends on the style you are looking for inside our home...vaulted or not. IF going with vaulted, SIPS are a good way to go for the roof system (I believe ICF builder magazine did an article on SPIS roofs over ICF walls a couple issues back). Again, get estimates and do a cost benefit analysis.
Once you pour your ICF wall and set your sill plate, your roof framing is standard operating procedure, depending on what you desire.
When doing gables out of ICF, there are a coupel differnt ways to approach them, all relatively straight forward. I believe Logix and Amvic have sections in their technical manuals that cover this, I am sure others do as well. You would be cuttin forms at angles, so there is more waste and cost per .f. for the gable protion. but that has to be weighed against the costs of the different roof systems you are looking at.
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IndianaFred
Registered Users
Posts:6
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| 09/20/2008 9:06 AM |
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| Thanks again SoCalScott, I'll keep those things in mine! |
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