adding insulation to existing home
Looking for addition insulation services in Western Washington? We specialize in house additions to keep your home comfortable and energy-efficient!
Addition Insulation
Building an Addition? Don’t Overlook Insulation
When adding new square footage to your home—whether it’s a bedroom, sunroom, garage conversion, or second-story extension—insulation is one of the most important steps in making that space livable, efficient, and code-compliant. At Insulation Co, we work with homeowners, contractors, and builders to ensure that every new home addition is properly insulated from the start—setting the foundation for long-term comfort, energy savings, and structural protection.
Fiberglass Batts
Ideal for open framing and cost-effective thermal performance
Spray Foam Insulation
Best for air sealing and moisture control in new builds
Rockwool
Excellent for soundproofing interior walls in bedrooms or home offices
Rigid Foam Board
Great for exterior walls and under floors for added R-value
Why Insulate Your Home Addition?
Unlike older parts of your home that may have outdated insulation, new additions give you the opportunity to insulate right—from day one.
Here’s why insulation is essential:
Temperature Control from the Start
Without insulation, new rooms can become too hot or cold. Insulation keeps temperatures balanced year-round.
Lower Utility Costs
Insulation eases HVAC strain and keeps energy bills low.
Sound Dampening
Adding a bedroom, office, or media room? Insulation in walls and floors helps reduce noise transfer between rooms and from outside
Moisture & Air Barrier Protection
Proper insulation seals gaps, blocking drafts, moisture, and pests—especially in crawl spaces and over garages.
Meet Energy Codes & Building Regulations
Most local codes specify R-values for walls, ceilings, and floors. We’ll ensure your addition meets or exceeds them.
Make Your Addition a True Extension of Home
Don’t let your new space feel like an afterthought. With the right insulation, your addition will blend seamlessly into your home—not just in appearance, but in comfort and performance. Contact Insulation Co today or request your free quote online. We’ll help you insulate your new space the right way—on time, up to code, and built to last.
FREE SAME DAY QUOTE
OTHER SERVICES
Quick Links
our service areas
- 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
- 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