A&C Twin Falls Spray Foam InsulationA&C Twin Falls Spray Foam Insulation

Wall insulation in Twin Falls ID - walls packed full and holes patched clean

Cold outside walls and drafty rooms in an older house? We fill each wall cavity full so those rooms finally stay warmer.

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Foam insulation fills the wall and ceiling cavities of a framed room with two windows.
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Wall insulation
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(208) 544-9023

How can you tell your walls need insulation?

  • Outside walls feel cold

    Put your hand on an outside wall on a winter morning, and it feels a lot colder than the walls inside the house. That usually means the cavities are empty or the old fill has slumped, and every winter you wait, you keep paying to heat that cold side.

  • Drafts at outlets and trim

    You feel moving air at outlets, switch plates or baseboards along the outside walls. Air is finding its way through the wall, and until something stops it, the furnace runs longer and the room never quite warms up.

  • One room never keeps up

    A bedroom or the room over the garage runs colder in winter and hotter in summer than the rest of the house. Often that's a wall that was never filled, and waiting usually means living around that room for another season.

Can you add insulation to walls that are already finished?

Yes. Wall insulation in Twin Falls usually means blowing loose fill into the hollow spaces of your existing walls through small holes, so each cavity fills completely, even the odd-shaped ones around pipes and wiring, and the rooms along your outside walls hold heat better without tearing out drywall.

Most wall calls we get come from older houses where the outside walls were built hollow or have old fill that's slumped over the years, so the rooms along them never warm up. The price turns on how many walls you want done, how the house is built, what's already in the cavities and whether we work from inside your rooms or from outside through the siding, and you'll get your own figure from the estimate once I've looked. The schedule mostly depends on how many rooms are involved, how much furniture has to come off those walls and, for outside work, the weather. Whether the job needs a permit depends on the work, so we talk it through with you at the estimate and check with the city's building office before we start if we're not sure.

Details to note before an estimate

  • Rough age of the house
  • Which rooms and outside walls to include
  • What's in the walls now, if known
  • Siding type and any re-siding plans

How we do wall insulation

I start by checking how your walls are built and what's already in them, because filling a cavity that's damp or blocked just hides the problem. On the day, our crew drills a small hole into each stud bay, from inside your rooms or from outside under the siding, and blows loose fill through a hose until that bay is full from top to bottom, awkward spaces around pipes and wiring included. When we work from inside, we cover the floors and keep the dust contained so it doesn't drift through the house, and once every bay is full, we patch the holes clean.

A wall fill stays inside the stud bays, so it can't reach the leaks where your walls sit on the floor framing, between floors or up where they meet the roof, and I'll point those out so you can decide whether to have us handle them with air sealing services. While I'm looking the house over, I'll also tell you if the lower level needs basement insulation more than the walls upstairs need filling.

Work that often goes with a wall fill

  • Air sealing services

    If you still feel drafts along the baseboards after the walls are full, sealing the gaps at the floor framing and attic usually closes them.

  • Basement insulation

    Cold floors on the main level or a chilly basement usually trace back to bare foundation walls, a separate job from filling the walls above.

What happens when you call about wall insulation in Twin Falls?

  1. Call or send a note

    Call (208) 544-9023 or use the form and tell us which rooms feel cold. We'll get back to you and set a time for me to come by.

  2. I look over your walls

    I come out myself, check how the walls are built and what's in them, and look at the attic or basement if they're part of the problem. You get an estimate that spells out which walls, whether we work from inside or out, and the price before anything gets drilled.

  3. Fix what comes first

    If something needs sorting before insulation goes in, like a roof leak or damp in a wall, you'll hear about it before we start. That way you're not paying to fill a wall that has to come open again.

  4. Install and walk through

    Our crew does the fill with a lead installer on site who knows what you and I talked about. When the holes are patched and the rooms are cleaned up, we walk the finished walls with you.

Questions before you book wall insulation

How much does wall insulation cost in Twin Falls?

Insulation in Twin Falls usually costs about $1 to $5 per square foot, and that range covers insulation work in general around here, not walls alone. Where your walls land depends on the things covered above, like how many walls and what's in them now, so the estimate is where you get the figure for your house.

How do I make sure blown-in wall insulation won't settle?

Hire an installer who packs it in dense enough, because fill that goes in light can sink over time and leave empty spots in the wall. Packed that tight, cellulose also slows the air moving around inside the cavity and does some air sealing along the way. Ask any installer how they make sure each bay is full before they patch it.

Is re-siding a good time to insulate walls?

Yes, re-siding is the easiest and least costly time to insulate and air seal your walls, because the old siding is off and the walls are open. A layer of insulation over the outside of the framing usually adds only a little to the cost of the siding, so it's worth planning both jobs together. Most people notice quieter, more comfortable rooms right away.

Who do I call about a permit for wall insulation in Twin Falls?

Call the city's Building Safety Department at (208) 735-7238 before work starts if you're not sure your project needs a permit. The city requires permits for most alterations, and its list names new built-up roofs, trusses and new windows but not wall insulation, so the call is how you find out for your house. Homes in the city's historic preservation district have to go before the commission before a permit can be issued, and the Planning & Zoning Department takes questions at (208) 735-7267.

How long does blown-in wall insulation last?

Properly installed cellulose can keep working well for decades. The word that matters is properly, since a wall that went in thin or full of gaps won't fix itself, which is why we take our time filling each bay. Our promise is satisfaction guaranteed on every job.

Do I need a disclosure statement from a contractor in Idaho?

Yes, Idaho law requires a general contractor to give you a disclosure statement before you sign a contract over $2,000 to alter or repair your home. Read it before you sign, and ask any contractor you're considering whether they're licensed and insured. We're fully licensed and insured, and I'm glad to go over the paperwork at the estimate.

Get a wall insulation estimate for your house

Send us a few details, and we'll get back to you within one business day to set a time. I'll come out, look over your walls and give you a free estimate with no obligation, so you know what's in there and what it would take before you decide anything.

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Book a look at your cold walls

Call (208) 544-9023 any day of the week and tell us which rooms run cold, so I know where to start looking.

Request an estimateCall (208) 544-9023