Third-Generation Precision for Every Window in NorCal
From Colusa to San Jose, SEI Window Coverings delivers expert-led, custom window treatment solutions—measured to the 1/16th of an inch and installed by the owner for lasting peace of mind.
A Family Legacy of Window Covering Excellence in NorCal
For SEI Window Coverings, craftsmanship is not a trend—it's a tradition. As a third-generation, family-owned business, our roots in the window treatment industry run deep. Owner Trevor Smith grew up immersed in the trade, learning from a grandmother renowned for drapery making and a father respected for meticulous installation. With over 20 years of exclusive, hands-on experience, Trevor has transformed SEI from a high-volume installation partner for national chains into Northern California’s most trusted independent dealership. Our approach is simple: combine technical mastery with accountability. The individual who measures your windows to the 1/16th of an inch is the same professional who completes the installation, eliminating the errors common with big-box retailers and outsourced contractors. Supported by Aurora Pujol, who keeps our operations running seamlessly, SEI delivers a stress-free experience from mobile showroom consultation to final fit. We are licensed (CSLB 1118434), bonded, and insured, offering peace of mind to homeowners and commercial clients alike throughout Colusa, Sacramento, Roseville, Walnut Creek, San Jose, and over a dozen counties.
20+
YEARS OF EXPERIENCE
A Technically-Led Approach to Custom Window Treatments
SEI Window Coverings stands apart in the Northern California market by prioritizing technical expertise over high-pressure sales. Our vertically integrated process—design, consult, measure, order, install, and service—ensures every solution is as functional as it is beautiful. From custom plantation shutters and energy-efficient cellular shades to motorized solar shades and smart home integration, we work exclusively with top-tier brands like Graber and Norman. Our mobile showroom brings real material samples directly to your home or business, allowing you to see wood, composite, faux wood, and vinyl options in your unique lighting conditions. Commercial clients appreciate our capacity to manage large-scale, high-value projects, whether it’s a luxury auto dealership or a federal office requiring security clearance. Every installation includes a lifetime warranty on shutters, and we provide ongoing service and warranty support for all SEI-installed products. With a reputation built on original project photos and verified customer satisfaction, SEI is the first call for anyone seeking precision-fit window treatments in Northern California.
FAQS
Frequently Asked Questions About Our Process
What areas do you serve with your mobile showroom?
We cover Northern California, including Colusa, Sacramento, Roseville, Walnut Creek, San Jose, and surrounding counties. No need to visit a showroom—we bring samples to you.
Who will be installing my window coverings?
Owner Trevor Smith personally measures and installs your window treatments, ensuring technical accuracy and full accountability on every project.
What brands and materials do you offer?
We specialize in Graber and Norman products, offering wood, composite, faux wood, vinyl, and motorized options for both residential and commercial clients.
Do you repair window coverings installed by others?
We prioritize replacing failing third-party products with our warrantied systems. Service and warranty support is available for SEI-installed solutions.
What kind of warranty do you provide?
All shutter installations include a lifetime warranty. Other products carry manufacturer warranties—details are provided during your consultation.
How precise are your measurements?
Every window is measured to the 1/16th of an inch, eliminating costly errors and ensuring a custom fit that stands the test of time.
