Wall Insulation

Serving the Boise Area

Want to Make your garage more comfortable?
Have a room you want to soundproof?
We Can Help.

Insulating your walls will help keep any space in your home quiet and comfortable year-round.

or keep scrolling to learn more about the wall insulation process

Why Insulate Your Walls?

3 Ways Wall Insulation Helps Your Home All Year

Improved Comfort

Insulating exterior walls in your home or garage helps them keep the heat out in the summer and hold it in through the winter, helping you stay comfortable year-round.


Whether you’re trying to keep noise out of your home office or keep it inside of your kids’ play room, wall insulation will give you some much-needed peace and quiet.

Lower Energy Bills

When wall insulation is helping your home keep the heat out on hot summer days and hold it in through the winter, your HVAC system doesn’t have to work as hard and you save on your energy bills all year.

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How is Wall Insulation Installed?

Here’s How We Insulate Your Walls

Insulating walls after they’ve been finished is quite a bit more complicated than doing it while your home is being built, but we have our wall insulation retrofit process down to a science.

The Right Way to Insulate Your Walls

5 Things We Focus On When Insulating Your Walls

There’s a lot that can go wrong when insulating walls if you don’t know what you’re doing. These are the 5 things we focus on to make sure we leave you with walls that are insulated perfectly.

1. Prepare For a Mess

Insulating existing walls is always a messy process, from drywall dust to stray insulation. That’s why we put extra care into our prepwork, doing everything we can to contain the mess and make our final cleanup a breeze. As with every type of project we work on, we make sure to leave your home just as clean as we found it.

2. Drill Holes Between Your Wall’s Studs

We’re going to be drilling a hole into each framing cavity of the wall we’re insulating, so knowing where the studs are is important. While we can usually count on most studs being 16 inches apart, framing around doors, windows, and near the outer ends of walls will often be irregularly spaced.

Marking stud locations helps us make sure that every hole we drill is near the center of each framing cavity, making the next step of the process a breeze.

3. Fill The Wall Completely

Gaps in a wall’s insulation will bring down the effective R-value of the wall as a whole, so making sure that each framing cavity in the wall is entirely filled with dense-packed insulation is key.

This is where our experience comes into play – after having insulated hundreds of walls, we know how long it takes to completely fill each wall cavity with the specific equipment and material we use. If we feel one part of your wall filling up more quickly than expected, we know that something is stopping the insulation from filling the entire wall cavity – whether it be the odd framing cross-member, a horizontal pipe, or a loop of wire. When this happens, we drill a second fill-hole below the obstruction to make sure that the entire cavity gets filled, leaving your wall insulation with zero gaps.

4. Don’t Damage the Drywall

Drywall is pretty strong, but a commercial insulation blower is stronger – if you’re not careful you can easily pack insulation into your wall so tight that it causes the drywall to bow or crack.

This is another issue that’s easily solved by our experience – we know how to calibrate our equipment to minimize the risk of damaging your wall and keep a close eye out for any signs of the drywall shifting as we blow insulation into your walls.

5. Patch Your Wall Properly

Now that your walls are insulated, it’s time to make them look good again. We patch the fill-holes we put in your walls with the same circles of drywall we cut out in the first place, securing them with pieces of 1×2 and smoothing them over with drywall compound to leave them ready for any necessary finishing touches. We stick to what we’re best at so we don’t apply any texture or paint, but we’re happy to give you a recommendation for a painter or handy-man.

Ready To Get Started?

You Have Questions?

We Have Answers

How do I know if my walls are insulated?

If your home was built in the 70s or later, your exterior walls are almost certainly insulated. Whether or not your interior walls are insulated is entirely up to the discretion of your builder – most good builders will insulate bathroom and bedroom walls for soundproofing.

Garage walls are rarely insulated, even in brand new homes. (If building code doesn’t require something a builder probably isn’t going to spend the money to do it, even if it would be useful).

The only way to be 100% sure if a wall in your home is insulated is to check for yourself. The easiest & least destructive way to do this is to drill a small hole (3/8″ is usually a good size) in the wall you’d like to check. While drilling your “check hole”, push the drill bit all the way into the wall (aim to go about 2″ deep) and keep the drill running as you pull it out. If the wall is insulated, this should make the drill bit grab a bit of insulation on its way out so you can see what’s in there without trying to peek through that tiny hole.

How long will it take you to insulate my walls?

In most cases we can complete a wall insulation project in 4-6 hours, but this ultimately depends on how many walls we’re insulating and the complexity of the wall’s framing (more complex framing requires more insulation fill holes to be cut and patched).

What R-Value can you insulate existing walls to?

We can insulate walls with 2×4 framing to R-15 and walls with 2×6 framing to R-21 – the same R-Values that can be reached when installing batt insulation into walls during the initial construction process.

Can you add more insulation to walls that are already insulated?

When there’s already insulation in a wall, there’s nothing that we can do to add more. In this case you have two main options:

  • Option 1: Injection spray foam
    • – Pro: In theory, injection spray foam can work its way past the existing insulation in your walls then push it out of the way as it expands.
    • – Con: We’ve heard mixed results from people who have had this done, and it is quite expensive.
  • Option 2: Remove the drywall and start from scratch
    • – Pro: You can insulate your wall perfectly (how your builder should have done it in the first place).
    • – Con: You’ll have to tear-down the drywall on every wall you want to re-insulate, then install new drywall and re-finish the wall when you’re done.
What type of wall insulation do you install?

We install blown-in fiberglass insulation into existing walls (ones that have already been drywalled and finished) and can install either blown-in fiberglass or fiberglass batt insulation into open walls that have not yet had drywall installed.

What is the best type of insulation for walls?
Should I use fiberglass or cellulose?

Blown-in fiberglass insulation is a much better choice than cellulose for attic insulation in terms of both upfront cost and long-term performance.

Cellulose insulation settles up to 20% over time, leaving the top of your walls with a major gap in their insulation after a few years. Modern fiberglass insulation doesn’t settle at all, so your walls will stay just as efficient years down the road as they were the day they were first insulated.

What does “R-Value” mean?

The R-value of a material is a measure of its thermal resistance – you can think of it as the “insulating power” of the material. The higher the R-value, the greater the insulating power!

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