Anyone with experience having built a SIP home care to ‘guestamate’ what a SIP shell installed on my lot should cost?

 

We have a 3300SF home with a bungalow over the three car garage and 12 ft high walls?

 

I understand that stick built framing is running 22 ~26% of total construction cost

 

Thanks for any feedback!

 

John

John,
 There are 2 components: The SIPS and the labor.

So, calculate a square footage of the walls, and a square footage for the roof. Do not subtract for windows and doors. In other words if the gross wall dimensions for wall 'A' are 40' x 10', you've got 400 sqft.

Now prices vary fairly widely. I use $6 per square foot(6.5" panel), and that should be high, and would include everything except shipping and assembly materials(sealant, adhesive, screws, spray foam, etc.).

Do the same for the roof panels(if being used). I'd use $7 per sqft.

Ok, that should give you a rough estimate.

So, for a 40' x 40'(1,600 sqft house) with 10' high walls, I'd estimate at: 40' x 4 = 160lf x 10' = 1,600 sqft x $6 = $9,600.

Then there is labor. Much tougher estimate. On a slab, how long do you think it would take a crew of 4 men to set 160 lf of sill plate(and maybe a SIP bottom plate depending on the type of SIPS being used)? Now the panels. You'd have either 10 per wall(4' wide) or 5 per wall(8' wide) panels to set. Then they have to install the top plates. Walls done.

How long? Wow, depends on the efficiency and expertise of the crew. Ok, let's WAG:

• 1/2 day for the sill plates...
• 1/2 day for each wall...
• 1/2 day for the top plates...

Ok, 3 crew days. What do ya think about cost? Let's shoot high, $40 per hour per man, $160 per crew hour x 24 hours = $3,840.

Will they be renting equipment(or have their own and charge you for it)? There's some more $$$$. For a SIP roof, you can usually count on it.

Then for your scenario, you'll need to add excavation and foundation costs. A local contractor should be able to give you a price on the excavation & foundation. Then have him give you a price per crew hour. You should be able calculate a rough estimate from that.

Panelcrafter Excellent respond, your a real professional, and an asset to this forum, keep up the posting i really enjoy it!

here is a recent bid from enercept for a smaller house(2800)for the walls only.

6" walls plus all screws and sealant plus $975 for freight. = $15983.00

Don't forget engineering. Also, JC's estimate presumes that you will be getting precut panels. It may take longer if you have to go back and cut windows. This isn't a fast process because you can't speed up the hot iron running through foam.

Smaller? 40' x 40' is 1,600 sqft. Smaller? Also, as I recall you had something like 298 LF of 9' walls(vs 160 LF of 10' walls).

Let's see: 298 LF x 9' x $6 = $16,092.

As I noted this should be a rough estimate, and it should be slightly high. Hmmmm. 'Slightly' high enough to cover installation materials and shipping. Not too shabby.

But I do understand the reason behind your post. It's not to inform, it's to bash. 

Nice try.

Points well taken I'll be sharing my experiences with my investors and on my personal residence!

"But I do understand the reason behind your post. It's not to inform, it's to bash."

i said smaller because he said in his post he had 3300 sq ft. how is it bashing to post an actual estimate. do you have a cob up your ass or something?

Hmmmm...I don't think so. I mistakenly thought that you were referring to my 40' square Example. Sorry.