Business Details
36 Years
experience
Trusted Window & Door Replacement Services in Portland, OR
Therm-O-Loc Windows has been serving the Portland Metro area since 1990, specializing in window and door replacement and installation. As a locally owned family business, we prioritize quality, attention to detail, and customer satisfaction. Our team of trained professionals stays current with the latest industry standards to ensure precise and efficient installations. We partner with top manufacturers like Milgard and Cascade Windows to deliver energy-efficient, durable products.With over 28 years of experience, we have built lasting relationships with customers and manufacturers, earning a reputation for honesty, transparency, and exceptional service. Our commitment to treating every home with care and professionalism has made us a trusted choice for thousands of homeowners in the Pacific Northwest.
Services
Glass Replacement
Window Installation
Door Replacement
New Construction
Design Consultation
Details
- Year established: 1990
Highlights and features
- We have over 28 years of experience in window and door replacement.
- Our team is Milgard-certified for the highest quality installations.
- We provide free in-home consultations and personalized design guidance.
- Our installations are efficient, clean, and completed with minimal disruption.
- We maintain long-term relationships with top local manufacturers for superior products.
Associations and certifications
- Milgard Certified Dealer
What people say
Highest quality of service
Lowest bid
Cleanliness
Consistent, on-time
Excellent
Services
Glass and Window Replacement
Therm-O-Loc Windows specializes in replacing old windows with energy-efficient vinyl, wood, or fiberglass models from Milgard and Cascade Windows. Our skilled team ensures precise installations that enhance home comfort and reduce energy costs. We also repair broken or failed glass units, preserving frame integrity while improving performance.
New Construction
We supply and install high-quality windows and doors for new residential and commercial projects. Partnering with Milgard-certified manufacturers, we offer durable, energy-efficient products with industry-leading warranties. Our direct collaboration with builders ensures seamless ordering and hassle-free installations tailored to project needs.
Door Replacement
Upgrade your home with modern sliding, French, or folding doors from Milgard and Cascade Windows. Our team installs durable, stylish options that enhance curb appeal and indoor-outdoor connectivity. We focus on energy efficiency, security, and aesthetics to meet both functional and design goals.
Window Design Consultation
We offer free in-home consultations to help select windows and doors that match your home's style and functional needs. Our experts guide you through options for modern, traditional, or custom designs, ensuring long-term satisfaction with both appearance and performance.
Questions
What services does Therm-O-Loc Windows offer?
We specialize in window and door replacement, new construction installations, glass repair, and free design consultations for homes in Portland and Southwest Washington.
Are you Milgard-certified?
Yes, we are a Milgard-certified dealer, ensuring access to premium products, warranties, and installation expertise.
Do you serve areas outside Portland?
We serve the entire Portland Metro area and Southwest Washington, including Vancouver, Lake Oswego, and Beaverton.
How long does a window replacement take?
Most projects, including full replacements, are completed in one day with minimal disruption to your home.
Is there a warranty on installations?
Milgard products come with industry-leading warranties, and our workmanship is guaranteed for quality and durability.
Can I get a free estimate?
Yes, we provide free in-home consultations and quotes for all window, door, and new construction projects.
