Serving Des Moines, IA
Iowa's closed- and open-cell spray foam specialists — BPI-certified building envelope crew, pole-barn and new-construction installs, and a lifetime workmanship warranty backed by documented air-leakage testing.
Iowa's closed- and open-cell spray foam specialists — attics, walls, crawl spaces, rim joists, and pole barns. BPI-certified building envelope crew, documented air-leakage testing, and a lifetime workmanship warranty backed by post-install blower-door verification.
By the Numbers
Years in Iowa
Homes Insulated
Google + BBB A+
Building Performance Certified
Workmanship Warranty
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The Reality
Sound familiar?
These are the situations we help Des Moines customers solve every week.
- →Your second-floor bedrooms are 10 degrees hotter than the rest of the house in summer
- →Your gas bill in January looks like a car payment and the furnace runs constantly
- →Your fiberglass batts are sagging or compressed and clearly not doing the job anymore
- →You're building new construction and want to actually meet the IECC code without compromises
- →Three insulation contractors quoted $4,800 to $19,400 for the same attic and you can't tell what's actually different
Our Services
What we install.
Service · 01
Closed-Cell Attic & Roof Deck Foam
Closed-cell spray foam applied to the underside of the roof deck or to the attic floor — air-seals, insulates, and acts as a vapor retarder in one application. R-7 per inch, structural rigidity bonus, and HVAC equipment now lives in conditioned space if you go to the deck.
Service · 02
Open-Cell Wall & Sound Insulation
Half-pound open-cell foam fully fills wall cavities, expands into every gap and around every wire and pipe, and doubles as a sound dampener for interior walls. Best paired with a smart vapor retarder in our climate.
Service · 03
Crawl Space & Rim Joist Sealing
Closed-cell foam applied to the rim joist and (often) the foundation walls converts a leaky vented crawl into a conditioned space. Eliminates the #1 air-leakage path in most Iowa homes and pairs cleanly with a vapor barrier and dehumidifier.
Service · 04
New Construction & Pole Barn Foam
Whole-house and pole-barn closed-cell foam for new builds and ag/commercial outbuildings. Coordinated with your GC, framer, and electrician schedule. Documented R-value and air-tightness for your code packet and energy modeling.
The Difference
Why Iowa builders and homeowners trust Northstate.
BPI Building Performance Certified
Our crew leads carry BPI Building Analyst certification. We don't just spray foam — we understand how the building envelope works as a system, where the leaks actually are, and what your house will do AFTER the foam goes in.
Documented Air-Leakage Testing
Every retrofit job includes pre- and post-install blower-door testing. You see the actual air-changes-per-hour reduction, in writing, signed off by our BPI lead. That documentation also unlocks utility rebates and tax credits.
Lifetime Workmanship Warranty
Manufacturer covers the resin chemistry; we cover the install. Combined warranty against pull-away, voids, and coverage gaps for the life of the home. Transferable on home sale.
Honest About When Foam Is Wrong
Foam isn't always the right answer. If your attic ventilation is solving the problem fine and your bills are reasonable, we'll tell you to add cellulose instead and save $4K. We've turned away 15% of bids in the last year because foam wasn't the right fit.
Common Questions
You probably want to know.
How much does spray foam cost?+
Open-cell wall cavities: $1.20–$2.10 per board-foot. Closed-cell rim joist or attic deck: $2.40–$3.60 per board-foot. Typical 2,400-sqft retrofit attic: $4,800–$8,400. Whole-home new construction: $9,800–$22,500 depending on scope. Detailed line-item quote after free estimate.
Open-cell vs closed-cell — which do I need?+
Closed-cell for anywhere moisture or air-sealing matters most: rim joists, basement walls, roof decks, exterior walls in our climate. Open-cell for interior partition walls (sound), and as a budget option for wall cavities where a smart vapor retarder is added separately.
How long does the install take?+
Typical retrofit attic: one day. Whole-home new construction: 2–4 days depending on size, coordinated with your GC's framing and rough-in schedule. We provide a 24-hour reoccupancy window after the foam cures.
Will it actually lower my bills?+
Yes — typical Iowa retrofit drops heating bills 20–35% and cooling bills 15–25%. We document pre- and post-install blower-door numbers so the savings are measurable, not theoretical. Most retrofits pay back in 4–7 years on energy savings alone.
Are there rebates or tax credits available?+
Yes — MidAmerican Energy and Alliant rebates for documented air-sealing, plus the federal 25C tax credit (up to 30% of project cost capped at $1,200/year). We provide the documentation packet your tax preparer or utility needs.
Get the bill drop you've been telling yourself you'd fix one of these days.
Free in-home estimate with thermal imaging walk-through. We identify your actual leakage paths, document the readings, and provide a written line-item quote. No pressure, no commission upsell.
📞 (515) 555-0157Visit Us
Des Moines, IA
Northstate Spray Foam
2840 Hubbell Ave
Des Moines, IA 50317
Phone
(515) 555-0157Service Area
Des Moines · West Des Moines · Ankeny · Urbandale · Waukee · Ames · Cedar Rapids