Our Proven Window & Door Replacement Process
At Lake Washington Windows and Doors, we have our installation process down to a science and follow the same 3-step process every time.
Our Simple 3-Step Replacement Process
After installing thousands of windows and doors throughout the Pacific Northwest, we know what works. That’s why we follow the same proven 3-step process for every project. It keeps things easy for you, delivers precise results, and ensures long-term performance in our rainy Pacific Northwest climate. From the initial consultation to the final installation, our team makes the process simple, respectful, and professional, with no pushy sales tactics and no mess left behind.
Step 1: Complimentary In-Home Consultation
Your replacement window or door project begins with a no-pressure, no-obligation consultation in your home. We’ll schedule a convenient time for one of our window and door specialists to meet with you, assess your current setup, and learn more about your goals. During the visit, we’ll:
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Inspect your existing windows and doors
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Answer your questions about materials, energy efficiency, aesthetics, and more
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Take rough existing frame measurements to create an accurate quote
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Recommend replacement window and door options based on your home, lifestyle, and budget
We’ll never rush or pressure you into a decision. After the visit, we’ll follow up with a clear and detailed estimate as soon as possible so you can make an informed decision.
Step 2: Critical Measure
Once you’ve approved your quote, we’ll schedule a visit with your lead installer to take precise, final measurements for every replacement window or door in your project.
This appointment typically takes less than an hour, but it’s one of the most important parts of the process. Accurate measurements ensure your custom-built replacement windows and doors fit perfectly and perform properly, preventing air leaks, water intrusion, and future issues.
After gathering the final specs, we submit your order to our trusted manufacturing partners to produce your windows and doors.
Step 3: Expert Installation
Our certified installation team gets to work using our patented Leak Armor system to ensure your replacement windows and doors provide lasting protection and performance..
We’ll complete most of the work outside your home. If we need to come inside, we’ll ask for permission, lay protective coverings, and vacuum up debris as we go. We treat your home with care and leave it clean at the end of each day. During installation, we’ll:
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Remove and responsibly dispose of your old windows or doors
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Install each replacement unit with precision and care
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Apply our Leak Armor flashing system for superior weather resistance
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Perform a final walkthrough to ensure everything looks and works exactly as it should
Once the work is complete, we’ll leave you to enjoy the comfort, energy efficiency, and quiet of your newly upgraded windows and doors.
What Customers Are Saying About Our Replacement Process
Experience the Benefits of Professional Installation While Avoiding the Risks of DIY
Choosing the right replacement windows and doors is only part of the equation. If they’re not installed correctly, even the most advanced products can underperform or worse, cause long-term problems. Here’s what a professional installation provides and what can go wrong without it:
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Benefits of Professional Installation |
Risks of Poor or DIY Installation |
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Proper fit prevents leaks: Precise measurements and installation prevent air drafts and water intrusion. |
Gaps lead to damage: Improper fit causes drafts, water entry, and higher utility costs. |
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Warranty remains valid: Professional installation keeps manufacturer warranties intact. |
Voided warranties: Incorrect installation often voids product coverage. |
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Leak Armor system adds protection: Our patented system defends your home against rain, moisture, and mold. |
No advanced sealing: Standard installations or DIY efforts can lack moisture protection. |
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Boosts energy efficiency: Tight seals and expert fitting help lower heating and cooling bills. |
Higher energy costs: Poor sealing lets heated or conditioned air escape, driving up energy costs. |
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Improves sound insulation: Proper installation reduces outside noise for a quieter living space. |
No sound barrier: Gaps and misalignment let outside noise travel freely indoors. |
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Preserves structural integrity: Your home’s framing, sills, and walls are protected from water damage. |
Structural damage risk: Water intrusion can lead to wood rot, mold, and a warped window frame. |
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Long-lasting sealants and flashings: We utilize commercial-grade materials to protect against wear. |
Weak or failing seals: Low-quality or poorly applied materials break down over time. |
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Enhances home value: Clean, professional craftsmanship improves curb appeal and resale value. |
Sloppy appearance: Poor installation and finishing can damage your home’s appearance and deter potential buyers. |
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Quick, clean installation: Our team works efficiently and respects your space every step of the way. |
Time-consuming DIY: Non-professional work takes longer and creates more mess. |
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Thorough final walkthrough: We review every detail and clean up the work area before leaving. |
Lack of accountability: Incomplete jobs may leave behind debris, dust, or problems. |
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Custom solutions for unique homes: Our team has the experience to handle non-standard frames and older construction. |
Limited DIY flexibility: Non-standard projects may overwhelm inexperienced installers. |
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Code-compliant workmanship: We meet or exceed local building codes and manufacturer guidelines. |
Missed code requirements: Unpermitted work can result in fines or problems when selling your home. |
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Scheduling and support: We handle communication, timelines, and delivery. |
Uncertain timelines: DIY or budget crews may delay or miss installation windows. |
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Access to premium products: We work directly with top manufacturers to ensure quality and consistency. |
Wrong product orders: Sizing errors or mismatched styles can lead to delays, reorders, and increased costs. |
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Peace of mind and less stress: You can relax knowing the job is being done right the first time. |
No service if something goes wrong: DIYers and cheap contractors may leave you on your own after problems arise. |
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Catch hidden issues: Our pros recognize signs of hidden moisture, framing, or pest problems. |
Hidden issues overlooked: Problems behind the wall may go unnoticed and unaddressed. |
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Safer and injury-free: Our trained team handles the heavy lifting, ladders, and tools. |
Injury risk: Window and door installation is physically demanding and can be dangerous. |
Why Lake Washington Windows and Doors Is a Name You Can Trust
At Lake Washington Windows & Doors, we know that experience matters. That’s why we’ve assembled a team with over 575 years of combined experience in the window and door industry who know how to get the job done right the first time. Since 2008, we’ve completed thousands of installations across the Pacific Northwest, and our attention to detail has earned us a 4.9-star average rating from homeowners who value our craftsmanship, professionalism, and customer-first approach.
As a locally owned business, we’re proud to serve our community with premium windows and doors built for the Pacific Northwest climate. We install only the highest-performing products from trusted manufacturers and back them with strong warranties. Our exclusive Leak Armor system provides every installation with added protection against water, drafts, and noise. We treat your home with the same care and attention we would give our own.
We Only Work With the Country’s Best Manufacturers
We partner with the best in the industry to bring you a curated selection of fiberglass and vinyl replacement windows, patio doors, entry doors, and stacking door systems. Whether you’re upgrading for energy efficiency, style, or durability, we offer options to match your goals.
No matter which product you choose, our expert team ensures a perfect fit, clean finish, and long-lasting performance, all backed by industry-leading warranties for your peace of mind.
An Industry-Leading Warranty Protects Each of Your Windows and Doors
Your replacement window and door investment should come with lasting peace of mind. That’s why every product we install is backed by a manufacturer’s warranty, with many offering lifetime coverage and transferable protection for added value.
Warranties typically cover key performance areas like product defects, insulated glass, finishes, and hardware. These protections apply when products are properly maintained and installed, which we ensure through our certified installation team. While certain conditions or exclusions may apply, we work only with manufacturers who stand behind their products with clear, customer-focused policies.
All warranties are supported by Lake Washington’s commitment to honest communication, professional workmanship, and long-term customer care. For full details, warranty coverage is subject to each manufacturer’s terms and our company’s service policies.
Our Patented Leak Armor Guarantee Protects Every Window
In addition to manufacturer warranties, we protect your windows and doors with our exclusive, patented Leak Armor™ installation system, engineered specifically for the Pacific Northwest’s wet climate. Developed through years of experience and thousands of installations, Leak Armor combines layered waterproof flashings to redirect moisture, protective sill pans to guard against base-level water damage, high-performance sealants at all critical points, and precision installation that seals out drafts and noise. It goes far beyond standard methods to defend your home against moisture, air infiltration, and long-term structural issues. Our Leak Armor™ system provides:
- Increased resistance to water intrusion, essential for the rainy PNW climate
- Extra sill protection that helps prevent wood rot
- Reduced air infiltration and fewer drafts
- Improved sound control, reducing outside noise for a quieter home
- Better energy efficiency, helping lower your heating and cooling costs
Leak Armor gives your home commercial-grade protection at no additional cost, keeping your interior dry, efficient, and comfortable. It’s just one more reason homeowners trust Lake Washington Windows & Doors for lasting results.
Ready to Start Your Replacement Window or Door Project?
When you’re ready to experience the benefits of new windows and doors, we’re here to help. Whether you’re replacing one window or outfitting your entire home, we make the process smooth, professional, and pressure-free. Schedule your complimentary in-home consultation today, and let our experts help you choose the right windows or doors for your space, style, and budget.
FAQs – Our Window Replacement Process
How long does the entire window and door replacement process take?
From your initial consultation to final installation, most window or door replacement projects take between six and 10 weeks. Timelines can vary depending on product availability, manufacturer lead times, obtaining permits (if required), and the time of year. Our team will keep you updated throughout the process and work with your schedule to ensure a smooth experience.
How long does the actual installation take?
Most installations are completed in one to three days, depending on the size and complexity of your project. We’ll provide you with an accurate timeline during your consultation, and our crews always work efficiently to minimize disruptions to your home.
Do I need to be home during the installation?
We complete most of the work from the outside, but if we need access to the inside of your home, we’ll coordinate a convenient time and always respect your space.
What areas do you serve?
We serve King County, Pierce County, Southern Snohomish County, and Kitsap County. If you’re unsure whether you’re in our service area, please give us a call.
Are financing options available?
Yes! We offer competitive financing plans to help you get your windows and doors as soon as possible. Ask us for current offers during your consultation.
Can you match the style of my existing windows or doors?
Absolutely. We work with multiple manufacturers and offer a wide range of colors, finishes, hardware options, and grille patterns to complement your home’s design.
Do you replace or repair interior trim and exterior trim during installation?
Yes. As part of our installation process, we inspect both the interior trim and exterior trim around each window or door. If the trim is damaged, outdated, or incompatible with your new units, we can repair or replace it to ensure a clean, sealed, and professional finish. Our goal is to enhance both the look and performance of your home, inside and out.
Is your replacement window installation team licensed and insured?
Yes. Our window installers are fully licensed, bonded, and insured in Washington State. Our team is trained, background-checked, and held to the highest standards of professionalism.
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