West Des Moines Attic Insulation
We seal the ceiling first, set the baffles, then blow cellulose to R-49. You get the before and after numbers in writing, not a promise.
Three eras of West Des Moines houses, three different attics.
Valley Junction is one story. Those 1900s houses have plaster walls with nothing behind them and attics that were never really insulated, just floored over for storage. The 1970s through 90s ranches out toward Westridge got blown-in fiberglass when they were built, and forty years later it has settled into a thin grey mat that measures nowhere near what the label once said. Then the newer builds off Mills Civic, framed to code minimum, which is the floor a builder is allowed to hit and not the number that makes a January bill reasonable.
Central Iowa is climate zone 5. The target is R-49, about fourteen to sixteen inches of settled cellulose. We measure what is actually up there in several spots, because attics are never uniform, and then we write down where you started and where you ended. That written number is worth keeping. It answers the question at resale, and it is what a tax filing wants to see.
Depth alone is not the whole picture either. An attic can read fourteen inches in the middle of the floor and almost nothing along the eaves, where wind coming in the soffit vents has pushed loose fill back off the top plate over the years. That thin band sits directly above the exterior walls of your house, which is the worst possible place to lose coverage, and it is a common finding in the older ranches.
What separates a real upgrade from a load of fluff is the order of work. Air sealing comes first, every time. Can lights, plumbing stacks, bath fan boots, and open wall top plates are holes, and no amount of depth over a hole stops air from moving through it. Seal, baffle, then blow.
What the assessment finds, and what we do about it.
The walkthrough is where the quote comes from, so we do it properly. Christian or a lead goes into the attic with a flashlight and a ruler, not a clipboard at the front door, and you get told what is up there before anybody talks about scope.
The walkthrough
Depth readings across the whole floor, not one probe by the hatch. We flag settled material, wind-washed corners near the eaves, and anything wet or chewed.
Finding the bypasses
Can lights, chimney chases, dropped soffits over kitchen cabinets, and the top plates of interior walls. These are the paths warm house air uses to get above your ceiling.
Sealing
Foam and fire-rated sealant at every penetration, gasketed covers over recessed cans, weatherstrip on the hatch. Slow, hands-and-knees work that decides the whole result.
Baffles at the eaves
Baffles hold the soffit-to-ridge channel open so deeper fill cannot choke it, and they stop wind washing that scours insulation thin right where the roof meets the wall.
Cellulose to depth
An even blanket edge to edge, with depth rulers left standing so coverage is verified as the crew works rather than guessed at afterward.
Sign-off
Photos before and after, the written R-value report, product certifications for your tax filing, and the work area swept before we pull out.
Ice dams in January, hot bedrooms in July.
The January tell
Ice on the eaves is the cheapest diagnostic in the business. It means heat is getting through your ceiling. That heat warms the roof deck, snow melts against the shingles, the water runs down to the eave where there is no house underneath to warm it, and it freezes into a ridge. Every thaw adds to the dam until water backs up under the shingles and finds a bedroom.
People call a gutter company for this, and we do gutters, so we will say it plainly: gutters do not cause ice dams and no gutter will cure one. The fix is a cold roof deck. Seal the bypasses so the warm air stays downstairs, bring the depth up to R-49, and keep the eaves breathing with baffles. Do those three and the snow on your roof stays frozen and even, which is exactly how it is supposed to sit.
The July half nobody mentions
Attic work gets sold as a winter fix, and then July arrives and the upstairs bedrooms will not hold a temperature no matter how hard the AC runs. Same cause. A shallow attic over a leaky ceiling bakes all afternoon and radiates straight down through the drywall.
Depth and sealing cut that both directions, which is why the comfort change is usually the thing people mention first, ahead of the bill. Most West Des Moines attics are a one or two day job, and you stay in the house while we work. If you are weighing approaches, our blown-in insulation and spray foam pages cover where each one earns its keep. The federal energy credit covers 30 percent up to the annual federal cap through 2032, and we hand you the paperwork for it. See finished attics in the gallery.
What people ask us.
What R-value should a West Des Moines attic hit?
Why air seal before adding depth?
Will this stop the ice dams on my roof?
Do you have to remove the old insulation?
How long does the work take?
Is there a tax credit for this?
On the regular Polk County run.
From Valley Junction out to the Mills Civic builds, West Des Moines is a short haul from the shop in Woodward.
Free attic insulation quote.
We come out, measure what you have, and write a scope for your house. No deposit, no pressure, no reason to decide on the spot. Request the quote.