Your Questions, Answered

Explore Our FAQs

  • What types of windows and doors do you offer?

    We provide a diverse range of windows and patio doors, including vinyl, fiberglass, and aluminum options. Our products cater to both new construction and replacement projects, ensuring you find the perfect fit for your home.

  • How long does installation take?

    Installation timelines can vary based on the project size and complexity. Typically, our professional team completes installations efficiently, often within a day for standard projects.

  • What warranties do you provide?

    We stand behind our products with comprehensive manufacturer warranties, ensuring your investment is protected. Specific warranty details can be found on our product pages.

  • Can I customize my windows and doors?

    Absolutely! We offer various customization options, including colors, styles, and sizes, allowing you to create the perfect look for your home.
Your Window Installation Questions Answered

Frequently Asked Questions

  • What is the average time for window installation?

    Our goal is to minimize disruption to your daily life. A single window installation is typically completed within the same day. For a full home window replacement, the project usually takes 2 to 3 business days, depending on the number of units and the architectural complexity of your home.

  • Do I need to be home during the installation?

    While we can work on the exterior, we do require access to the interior to ensure a perfect thermal seal and to complete the finishing trim work. We will coordinate a specific time that fits your schedule.

  • What types of windows do you offer?

    We offer a wide range of window types including vinyl, fiberglass, and aluminum options. Each type is designed to meet different aesthetic and performance needs, ensuring you find the perfect fit for your home.

  • How do I prepare for my window installation?

    To ensure a smooth installation process, please clear the area around the windows and remove any window treatments. This will help our team work efficiently and safely.
Quality Windows for Every Home

Frequently Asked Questions

  • What window manufacturers do you offer?

    We have strategically chosen to work with the finest regional manufacturers: Milgard Windows & Doors and Cascade Windows. As a Certified Milgard Dealer, we specialize in their full product catalog, including the Tuscany®, Trinsic™, and Ultra™ series, ensuring you receive the best pricing and factory-backed support.

  • Do the new windows come with screens?

    Yes. All of our operable window units from Milgard and Cascade include high-quality, matching screens as standard equipment. These are designed to be easily removable for cleaning while providing maximum airflow and protection.

  • What styles of windows are available?

    We offer a diverse range of window styles, including double-hung, casement, sliding, and awning windows. Each style is designed to enhance your home's aesthetic while providing energy efficiency and durability.

  • Are your windows energy-efficient?

    Absolutely! Our windows are designed with energy efficiency in mind, featuring advanced insulation and low-E glass options that help reduce energy costs and improve comfort in your home.
Quality Windows, Quality Warranty

Frequently Asked Questions about Milgard Windows

  • What is the warranty on new Milgard windows?

    Milgard offers one of the industry's strongest protections: the Full Lifetime Warranty. This covers both parts and labor for as long as you own your home. Because Thermoloc is a Certified Dealer, your installation is backed by this professional-grade guarantee.

  • Will new windows reduce my energy bills in Portland?

    Absolutely. Our windows feature advanced Low-E glass coatings and Argon gas fills, specifically engineered for the Pacific Northwest climate. By upgrading your home’s thermal envelope, you can significantly reduce heating and cooling costs year-round.

  • What styles of windows are available?

    Milgard offers a diverse range of window styles, including vinyl, fiberglass, and aluminum options. Whether you're looking for casement, double-hung, or sliding windows, we have the perfect fit for your home.

  • How do I choose the right windows for my home?

    Choosing the right windows involves considering factors like style, energy efficiency, and your home's architecture. Our team at Thermoloc is here to guide you through the selection process to ensure you make the best choice.

Thank you for contacting us.We’ll get back to you as soon as possible.

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Explore Our Services

At Thermoloc, we are committed to providing high-quality window and door solutions tailored to your needs. Whether you're in West Linn or Tualatin, our expert team is here to assist you.

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We’re here to answer all your questions. Don’t hesitate to reach out and talk to our window and door experts to find out everything you wish to know about our installation process, product durability, and anything in between.

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Journal

Vinyl vs. Fiberglass: Which Milgard® Series is Right for You?

January 30, 2026
A guide to framing your home in a new light.  Choosing between the sleek, modern lines of the Trinsic™ Series and the classic, traditional look of the Tuscany® Series can be a challenge. At Therm-O-Loc , our design consultations help you weigh the benefits of each. Whether you prioritize the low-maintenance durability of vinyl or the superior strength of fiberglass, we ensure your choice matches the architectural integrity of your home and your personal style.

Energy Efficiency for the PNW.

January 12, 2026
How high-performance windows keep comfort in and weather out. In the Pacific Northwest, your windows are the primary defense against damp winters and rising energy costs. By upgrading to Milgard® Windows and Doors , you aren't just changing the look of your home; you're investing in advanced glass technology. From the Tuscany® Series vinyl frames to the durable Ultra™ Series fiberglass, our installations focus on thermal performance that keeps your home cozy during the coldest months.