
We are the sustainably-focused side of


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.

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.
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.

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.

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.

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.

that1doorguy.com
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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