How to Stay Code-Compliant with Your Windows in Texas
- Longhorn Windows
- Aug 5
- 4 min read
Updated: Aug 24
If you're a Texas homeowner, you already know our state doesn't play around when it comes to the elements. Between brutal heat, severe storms, and the occasional hurricane barreling through the Gulf, our homes need to stand up to a lot—especially our windows. But here’s the kicker: staying protected isn’t just about having strong glass. It’s about making sure your windows meet Texas building codes. Fail to comply, and you could face inspection failures, insurance issues, or worse—leave your home vulnerable during a major storm.
This guide breaks down everything you need to know about Texas window code compliance—from the basics of IRC and IBC, to windstorm-rated requirements, and even the little-known violations homeowners make every day. And we’ll show you how Longhorn Windows makes staying compliant easy, whether you’re in Houston, Katy, Galveston, or Pearland.
Why Window Codes Are More Than Just Red Tape
Texas isn’t just big on pride and brisket—we’re big on safety, too. And when it comes to your home’s windows, ignoring local building codes can cost you more than just a failed inspection. From energy efficiency requirements to windstorm certifications, code-compliant windows in Texas are the front line of protection against both nature and legal headaches.
Take this stat: After Hurricane Harvey, TDI data showed that about 28% of property-related insurance claims were closed without payment—often tied to exclusions for windstorm damage, deductibles, or coverage classification issues. TDI even issued a bulletin reminding insurers not to deny wind claims, especially related to structural elements like windows, without informing policyholders of TWIA options.
Translation? If your windows don’t meet code or TDI-approved standards, you may be putting your insurance coverage—and your peace of mind—at risk.
Let’s walk through exactly what it means to be code-compliant in Texas—and how Longhorn Windows helps homeowners across Houston, Webster, Sugar Land, and Pasadena stay protected, efficient, and fully within the law.
Texas Window Code 101
Texas follows the International Residential Code (IRC) and International Building Code (IBC), but the Lone Star State throws in its own curveballs. If you’re anywhere near the Gulf Coast, you're in a designated windstorm zone. That means your windows need to pass the muster of the Texas Department of Insurance (TDI) and potentially withstand hurricane-force winds.
Here are the major code elements homeowners should know:
IRC/IBC Compliance
These codes define structural integrity, egress minimums (emergency escape routes), and safety glass requirements.
Any new window installation must meet or exceed these national standards.
Texas Department of Insurance (TDI) Requirements
In coastal counties (including Galveston, Texas City, La Porte, & Seabrook), TDI requires windstorm-rated windows.
TDI-approved products are tested for impact resistance and pressure performance.
Energy Code Compliance
Texas enforces IECC (International Energy Conservation Code) standards.
Windows must meet minimum U-factor and SHGC (solar heat gain coefficient) ratings depending on your climate zone (Zone 2 or 3 for most of Southeast Texas).
When Windows Must Meet Code (and When They Don’t)
Not all projects trigger the same level of scrutiny. Here’s when you’re required to upgrade to code-compliant windows:
New Construction: Every window must meet full code.
Room Additions or Major Renovations: New windows added to existing walls must follow current IRC/IBC and TDI standards.
Window Replacements: If you’re replacing an existing window without changing the size or frame, some code allowances apply—but energy codes still often apply.
Egress Windows: Bedrooms must have at least one window that meets egress code (minimum width, height, and open area).
Tempered Glass Requirements: Any window near a door, bathtub, or staircase may need to be tempered glass per IRC rules.
Ignoring these nuances can land homeowners with surprise inspection failures or, worse, uncovered damage claims.
Top Code Violations Homeowners Don’t Know They’re Making
Even the most well-meaning DIYer or general contractor can slip up. These are the most common Texas window code mistakes:
Using Non-TDI-Approved Windows in Windstorm Zones
Especially in Galveston, Baytown, League City, & coastal areas, using non-rated windows voids insurance eligibility.
Improper Installation Techniques
Even if the window is rated, a poor install can fail a TDI inspection. Flashing, anchoring, and sealing must all meet specs.
Overlooking Tempered Glass Zones
A small fixed window next to a stairwell may still require tempered safety glass.
Failing to Meet Energy Ratings
Cheap windows with low SHGC/U-factor ratings can result in failed inspections or higher energy bills.
Incorrect Egress Window Sizes
Replacing a bedroom window? If it doesn’t meet code for emergency escape, it’s non-compliant.
How Longhorn Windows Keeps It Compliant
At Longhorn Windows, we don’t cut corners—we cut down on inspection stress.
Here’s how we ensure your project stays fully code-compliant:
Certified Products
We only install TDI-approved, hurricane-rated windows in applicable zones.
Our windows are also ENERGY STAR® certified, meeting or exceeding Texas energy codes.
Expert Installations
Pre-Project Code Check
Before a single window is removed, we assess your home for windstorm, egress, and tempered glass requirements.
Our team handles the paperwork and, if necessary, coordinates with TDI or your local city inspectors.
Post-Install Inspections
We make sure everything is ready to pass city or third-party inspections the first time.
Ready to Keep It Code-Safe?
Whether you’re building new in Webster or replacing storm-battered glass in Mont Belvieu, Longhorn Windows has the products and expertise to keep your home safe, efficient, and fully compliant with Texas window code.
Call (832) 530-4485 to protect your home, your budget, and your peace of mind.