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Sliding Glass Door Thermal Performance: U-Factor ExplainedBi-Fold Door Thermal Performance: U-Factor ExplainedStorefront Energy Code: What Every Builder Must Know in 2026Exterior Bifold Doors: Weather Resistance GuideSliding Glass Door Thermal Performance: U-Factor ExplainedBi-Fold Door Thermal Performance: U-Factor ExplainedStorefront Energy Code: What Every Builder Must Know in 2026Exterior Bifold Doors: Weather Resistance Guide
Vol. IJacksonville, FloridaMonday, August 3, 2026
The Gladiator Dispatch
Doors · Windows · Modern Living — Straight From the Factory Floor
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Sliding Doors
Sliding Glass Door Thermal Performance: U-Factor Explained
What Is U-Factor and Why Does It Matter for Sliding Glass Doors? U-factor — sometimes called U-value — measures how quickly a door or window assembly transfers heat from one side to the other. The lower the U-factor, the better...
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Why Gladiator · What to Watch For
What Sets Us Apart
01
Factory-Direct Pricing
You buy straight from the maker — no dealer markup, no showroom overhead. Watch for "direct" sellers who still route through a middleman.
02
Real Thermal Performance
NFRC-rated U-factors and genuine thermal breaks — not just a sleek frame. If a quote skips the numbers, ask why.
03
Coastal-Grade Aluminum
6063-T5 alloy engineered for salt air and wind load, backed by a 15-year warranty. Thin extrusions are the red flag.
04
Freight Done Right
Insured, liftgate-equipped, nationwide delivery with a Bill of Lading on every shipment. No surprise dock fees.
Latest Stories
Tips From the Floor
The Pro Desk
Tip No. 01
Measure the rough opening, not the old door
Order to the framed opening with proper deduction for shims and flashing. The most common sizing mistake on big panel systems.
Tip No. 02
Spec the glass before the frame color
Low-E coating and the right U-factor drive comfort and energy bills far more than finish. Lock performance first, looks second.
Tip No. 03
Plan the header for wide spans early
A 16-foot opening needs structural support designed in before drywall. Loop your contractor in at the quote stage, not install day.
Coming Down the Pipeline
New & Upcoming
In This Issue · Outdoor Living
Define the Backyard. Aluminum Pergola Kits, Engineered to Last.
A patio without structure overhead always feels unfinished. See how a factory-direct aluminum pergola sharpens the architecture and creates a room you'll actually use.
Explore Pergolas →Keep Reading
Quick Reads
Jul 23
Sliding Glass Door Thermal Performance: U-Factor Explained
Jul 7
Bi-Fold Door Thermal Performance: U-Factor Explained
Jul 2
Storefront Energy Code: What Every Builder Must Know in 2026
Jan 20
Exterior Bifold Doors: Weather Resistance Guide
Jul 23
Sliding Glass Door Thermal Performance: U-Factor Explained
Jul 7
Bi-Fold Door Thermal Performance: U-Factor Explained
Jul 2
Storefront Energy Code: What Every Builder Must Know in 2026
Jan 20
Exterior Bifold Doors: Weather Resistance Guide
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