drill & fill wall insulation
Improve your home’s energy efficiency! We provide top-notch blown-in insulation for exterior and interior walls. Contact us for a free quote!
Upgrade Your Comfort Without Tearing Down Walls
Many older homes in Western Washington were built without proper wall insulation—leading to drafts, uneven temperatures, and high energy bills. Our drill and fill wall insulation service is the perfect solution to upgrade your home’s thermal performance without the mess of major renovations.
How It Works
Inspection & Prep
We evaluate your wall structure and choose the best insulation for your needs (fiberglass or cellulose)
Drill Access Points
Small holes are drilled between wall studs—either from the exterior or interior, depending on your home’s layout
Dense-Packing
Insulation is blown in tightly to fill the entire wall cavity, sealing gaps and air leaks
Clean Patching
Holes are carefully patched, leaving your walls looking as close to original as possible
What Is Drill & Fill Insulation?
Drill and fill insulation is a minimally invasive method used to insulate existing walls by drilling small holes between studs and filling the cavity with high-performance insulation. This process seals hidden gaps and improves energy efficiency—without having to remove drywall or siding.
Rebate Eligible
May qualify for local energy rebates and federal tax credits
Fast Installation
Most jobs completed in 1 day, no major demo or interior tear-down
Sound Control
Reduce noise from outside or between rooms
Improved Comfort
Say goodbye to cold spots and uneven temps
Rebates & Tax Credits
We’ll help you determine eligibility. Upgrading your wall insulation may qualify you for:
• PSE and other local utility rebates • 30% Federal Tax Credit (up to $1,200/year) under the Inflation Reduction Act
Ideal for Existing Homes
• Homes built before modern insulation standards
• Cold, drafty rooms or walls that feel cold to the touch
• Homeowners looking to reduce heating and cooling costs
•Attics or crawl spaces already insulated—but walls are not
Get a Free Estimate
Ready to make your home more comfortable and energy efficient? Contact us today for a free estimate on drill and fill wall
Serving Seattle, Bellingham, Everett, Olympia & surrounding areas
Call or message us today to learn more!
FREE SAME DAY QUOTE
Drill & Fill Wall Insulation - FAQs
What is drill and fill insulation?
Drill and fill is a method of insulating existing walls by drilling small holes between studs and filling the cavity with dense-pack insulation like cellulose or fiberglass.
What types of insulation are used?
We typically use dense-pack cellulose or blown-in fiberglass, both of which offer excellent thermal performance and sound reduction.
Will it damage my walls?
For exterior walls, small holes are drilled behind siding or in stucco and patched afterward. For interior walls, holes are drilled in the drywall and repaired cleanly. All work is done with minimal disruption.
How long does it take?
Most single-family homes can be completed in 1 to 2 days, depending on wall access and square footage.
Will it help with soundproofing?
Yes, dense-pack insulation can reduce sound transmission between rooms or from outside noise.
Is this eligible for energy rebates or tax credits?
In many cases, yes. We can help determine if your home qualifies for local utility rebates. Unfortunately, they did away with the tax credit starting 12/31/2025 so homes are no longer eligible for the 30% tax credit.
What’s the benefit of adding wall insulation?
Improved year-round comfort, lower energy bills, reduced drafts, and increased resale value—especially in older homes.
Can it be done on older homes?
Yes! Drill and fill is ideal for older homes without existing wall insulation, helping improve comfort and energy efficiency.
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our service areas
south Washinton
- Seattle
- Bellevue
- Kirkland
- Renton
- Everett
- Federal Way
- Auburn
- Kent
- Mercer Island
- Bainbridge
- Redmond
- Bothell
- Newcastle
- Shoreline
- Lake Forest Park
- Tukwila
- Des Moines
- Issaquah
- White Center
- Kenmore
- Edmonds
- Mountlake Terrace
- Lynnwood
- Sammamish
- Snoqualmie
- North Bend
- Lake Stevens
- Woodinville
- Mukilteo
north washington
- Bellingham
- Mount Vernon
- Burlington
- Lynden
- Blaine
- Birch Bay
- Custer
- Ferndale
- Chuckanut
- Lummi Island
- Orcas Island
- Oak Harbor
- Everson
- Alger
- Nooksack
- Marietta
- Sedro Wolley
- Anacortes
- La Conner
- Stanwood
- Arlington