Question 1

Why should I replace my windows?

Accepted Answer

New windows improve your home's energy efficiency, reduce outside noise, enhance curb appeal, and can increase your property value. Older windows often have air leaks, condensation between panes, or difficulty opening — all signs it's time to replace.

Question 2

How long does the installation process take?

Accepted Answer

Most residential projects are completed in one to two days. Larger projects with many windows may take two to three days. We always provide a detailed timeline during your free consultation.

Question 3

What brands do you carry?

Accepted Answer

We are the sole authorized dealer and installer of Crystal® Window & Door Systems in the DMV area. Crystal products are available in a wide range of styles, materials, and energy ratings to suit any home.

Question 4

What does the installation process look like?

Accepted Answer

We start with a free in-home consultation and measurement. After you approve the quote, we order your custom windows directly from Crystal. On installation day, our team carefully removes the old windows, installs the new ones, and ensures a complete, weather-tight seal before we leave.

Question 5

What warranty do you offer?

Accepted Answer

Crystal® offers a comprehensive manufacturer's warranty covering glass, frames, hardware, and seals. On top of that, we back our own work with a lifetime workmanship warranty — if it's an installation issue, we'll make it right.

Question 6

Do you handle permits and HOA approvals?

Accepted Answer

Yes — and this is an area where local experience really matters. We're familiar with permit requirements across Montgomery County, Prince George's County, Fairfax County, and the broader DMV area. We can advise on what's typically required for your jurisdiction and help you navigate HOA approval processes, including documentation and style matching when your association has specific guidelines.

Question 7

Can you work within historic district or preservation requirements?

Accepted Answer

Absolutely. Many of the neighborhoods we serve in DC, Bethesda, Alexandria, and elsewhere have historic preservation overlays that restrict window styles, materials, and visibility from the street. We have experience working within these constraints — selecting products that meet preservation standards while still improving performance and efficiency.

Question 8

Are you a local business?

Accepted Answer

We are — and proudly so. Wei's Windows is a family-owned business that started in the DMV and has never left. We handle everything in-house: design consultation, product sales across multiple premium brands, and professional installation. We've spent over two decades working on homes in Bethesda, Rockville, Silver Spring, Alexandria, DC, and the surrounding areas. When you call us, you're talking to the people who will actually show up and do the work — the same people your neighbors called. That community accountability matters to us, and we think it shows in how we work.

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