Do you have a showroom?

Yes, but it’s actually more efficient if we come to you because we need to do an in-home estimate. For a window or door installation, we can usually give you a bid during the first appointment. It takes more work to get a solar bid ready—we need at least 12 months of your electrical usage history, and we have to determine your site’s sun and shading issues.

What’s your turnaround time?

Most jobs start three to four weeks after the contract signing. Window and door installations are usually one-day jobs. Larger jobs like siding, solar systems, sunrooms and patio covers are usually completed within four to six weeks of signing the contract.

Will my new windows last a long time?

Yes. The windows we install have the most technological foam spacers instead of aluminum, which gives them a longer lifespan than the industry standard. We offer window systems with a full lifetime warranty.

What’s the difference between new construction and retrofit installation?

A retrofit installation is when new windows and doors are placed in existing frames—there’s no time to remove trim or cut back the siding or interior sheet rock. With new construction, there can be considerable demolition and then rebuilding. The process that’s best for your situation depends on the product you’re installing, whether it will fit into existing frames, and the condition of your home. New construction will make your home look like it was built with the new windows.

Northwest Exteriors

Name: Northwest Exteriors Diamond Certified Video Profile
Uploaded: 2010-12-07T22:34:59Z
Duration: 1 min 59 s
Channel: Diamond Certified Resource

Windows

Lake Marin Mendocino Napa Solano Sonoma Counties

Diamond Certified Company Report

Rated Highest in Quality and Helpful Expertise PERFORMANCEGUARANTEED

Northwest Exteriors

540 SURVEYS

Rating

15 CONSECUTIVE YEARS

SINCE AUGUST 2010

CERT 1671

Diamond Certified Ratings Dashboard

540

Verified Customers
Surveyed

Customer Loyalty

Customer Satisfaction

Helpful Expertise

Company Credentials

Liability Insurance
Business Practices
Current Complaint File
Workers Compensation
License Verification
Legal & Finance

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Diamond Certified Video Reports on Northwest Exteriors

Northwest Exteriors Diamond Certified Video Profile

Diamond Certified Researched Capabilities on Northwest Exteriors

Service Area

Sonoma County
Marin County
Napa County
Lake County
Mendocino County
Solano County

Serving Sonoma, Marin, Napa, Lake, Mendocino and Solano Counties

Main Services

Windows

Replacement Windows
Velux Skylights
Window Awnings
Window Glass Repair
Window Installation
Window Insulation
Window Pane Replacement
Window Repair
Window Replacement
Window Screen Repair
Window Screen Replacement
Window Seal Repair

Additional Services

null

Company Info

Hours

Mon

09:00 am - 05:00 pm

Tue

09:00 am - 05:00 pm

Wed

09:00 am - 05:00 pm

Thu

09:00 am - 05:00 pm

Fri

09:00 am - 05:00 pm

Sat

09:00 am - 02:00 pm

Sun

09:00 am - 02:00 pm

Closed

Contact

Northwest Exteriors

Capabilities Table

Company Name

Northwest Exteriors

Managers

Rick Pellhum, General Manager

Years in Industry

29 (Manager)

# of Employees

160

License

710798

Memberships

Electric & Gas Industries Association (EGIA), The League of California Homeowners

Founded

1995

Payment Accepted

american express,

discover,

mastercard,

visa

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Picture of A display showcasing James Hardie siding options stands quietly in the corner, embodying Northwest Exteriors' dedication to quality outcomes. With a focus on customer satisfaction, they consistently achieve high ratings. Copyright ©2025 Diamond Certified Resource

- Northwest Exteriors

A display showcasing James Hardie siding options stands quietly in the corner, embodying Northwest Exteriors' dedication to quality outcomes. With a focus on customer satisfaction, they consistently achieve high ratings. Copyright ©2025 Diamond Certified Resource