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We are the sustainably-focused side of

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Choosing sustainable solutions helps your home pass inspection

Sustainable, high-performance windows and doors are essentially what lets you pass Title 24 in the first place — the products that hit the required U-factor (≤0.30) and SHGC (≤0.23) are the well-built, energy-efficient ones: dual-pane, Low-E, quality frames. So compliance and sustainability aren't two separate goals; choosing the sustainable option is how you clear the code.

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Your windows and doors are a thermal hole in the house.

Why glass leaks so much energy

​

A single pane of glass has almost no insulating value on its own. Heat crosses a window three ways — conducted through frame and glass, carried by drafts around bad seals, and radiated straight through the pane. The last one dominates.

50%

of a home's heating or cooling load can move through fenestration — the single largest envelope pathway.

76%

of the sunlight hitting a standard double-pane window becomes heat inside during cooling season.

– 2/3

of the heat lost through a window escapes as radiant transfer through the glass itself, not the frame.

That's why we believe in sustainable design.

Three paths. One standard.

 

 

We provide a refined, seamless experience for clients seeking sustainable luxury door and window solutions. Whether you choose our full-service installation or prefer product-only delivery, every step — from personalized selection to final install — upholds our commitment to exceptional craftsmanship, efficiency, and environmental responsibility. ​​

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THE SOURCE

You have the crew. We have the product.

You have the crew. We have the product.

For homeowners and contractors who need the doors and windows themselves — nothing more. We help you choose, price it competitively, store it safely, and deliver on your schedule.

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THE OPENING

Your wall is ready. We supply and install.

Your wall is ready. We supply and install.

Your framing is done and the opening is waiting. Same product, same pricing, same delivery — with our installers setting the system to spec.

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THE CRAFT

White glove. Bare wall to ready to paint.

White glove. Bare wall to ready to paint.

We cut and frame the opening, install the system, then carry the work through flashing, waterproofing, and finished to stucco, ready for paint. Same competitive pricing on product, plus our internal service warranty layered on top of the manufacturer's coverage.

Ready to find your path?

We'll handle the hard part, you enjoy the natural light. The upgrade you want – green by design.

110 Broadway Ste B
Costa Mesa, CA 92627

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Not sure where to start? That's fine — just ask us what you want to know.

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The Brands We Stand Behind

sustainable door and window systems engineered with consciousness

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La Cantina V2  that1doorguy
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VistaLuxe WD LINE  that1doorguy
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Costa Mesa Showroom that1doorguy

one window.  one door.  one home at a time.

that1doorguy.com

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the chlorophyll of

one window

one door

110 Broadway Ste #B
Costa Mesa, CA 92627
Orange County, CA

one home at a time

© 2025 T1DG Solutions LLC

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