I'm looking for some advice on spray foam insulation quotes I've received for my home in northern Illinois. One contractor gave me a quote of over $33,000 for the top options and nearly $17,000 just for the attic using closed-cell foam and DC-315. I'm trying to determine if this pricing is typical or if it seems excessive. Here's a breakdown of the quotes I have:
1. 1st floor 2x4 exterior walls: Spray 3" average of closed cell foam - $3,700
2. 1st floor 2x4 exterior walls: 15 kraft faced batts - $1,600
3. 2x6 exterior walls: Spray 2" average of closed cell foam with R-13 unfaced batts - $4,600
4. 2x6 exterior walls: R-21 kraft faced batts - $1,600
5. 2x6 exterior walls: Spray 5 1/2" average of open cell foam - $2,800
6. Basement exterior walls: R-15 kraft faced batts - $1,600, or Spray 2 1/2" average of closed cell foam - $3,500
7. Accessible ceiling: R-11 kraft faced batts with R-38 blown-in cellulose for a total of R-49 - $3,200
8. Roof rafters: Spray 3" average of closed cell foam plus 7" average of open cell foam - $13,800
9. Applying DC-315 ignition barrier over exposed floor - $3,250
10. Rim joist ends: Spray 2" average of closed cell foam plus 3 1/2" average of open cell foam - $1,300
11. Garage ceiling: Spray R-38 open cell foam - $1,200
12. Bedroom interior walls: R-13 unfaced batts - $750
13. Floor slab: Spray 4" average of closed cell foam - $950.
What do you think? Are these options efficient? I have another bid with different choices but I'm not sure if those are better or worse. Any insights would be super helpful!
2 Answers
When it comes to quotes for spray foam, the best advice I can give is to get multiple bids. That way you can compare and see if your quotes are in the ballpark. Regarding the options you were given, I'd suggest being cautious about mixing different types like open and closed cell foam in the same project. While having efficiency in mind is great, sticking mostly to closed cell foam could save you a lot of headaches down the road. Consider consulting an insulation expert who can tailor a plan suited for your specific needs!
From what I see in your quote, it looks like you're potentially spending quite a bit, particularly for the roof and attic areas. In cold climates, open-cell foam might not be the best choice because it can lead to heat loss and moisture issues. If I were you, I would explore sticking to closed-cell foam for most of the areas and using fiberglass batts just for interior walls where sound transfer is more of a concern. Also, definitely consider an insulation consultant who can provide you with a more energy-efficient insulation plan tailored to your home.
Totally! I think a tailored plan sounds perfect, especially since insulation can vary widely depending on your region. My buddy in New England had some serious issues with foam in the attic too.
Definitely a good call! Different climates need unique approaches. Spending upfront for the right insulation can pay off in savings on energy bills later!
That makes sense! I’ve also heard that closed-cell foam is better for climates like yours, but I’d worry about potential moisture issues if there's a drastic temperature change.