WatchStorm Damage? G3 Roofing & Construction Is Your Best ChoiceIf you've lived through a North Texas August, you know the feeling of walking into a room with west-facing windows at four in the afternoon. It's like an oven. Your AC runs and runs and that room never quite cools down.
Windows are a big part of that story. Here's a plain-English guide to what makes a window energy efficient in our climate, so you can ask the right questions when you shop.
Why Do Windows Matter So Much in Texas?
Heat gets into a house in a few ways, and windows are one of the biggest. Sun shines through the glass and heats up the room. Heat also moves through the glass and the frame, and hot air leaks in around windows that don't seal well.
In a lot of the country, people buy windows mostly to keep heat in during winter. Here, we care just as much, and usually more, about keeping the sun's heat out in summer.
What Is Low-E Glass?
Low-E stands for low emissivity. It's a very thin, nearly invisible coating on the glass that reflects a lot of the sun's heat while still letting light through. Different low-E coatings are tuned for different climates. In a hot, sunny place like North Texas, you generally want glass designed to block more solar heat.
G3 can talk through modern frames and low-emissivity glass options with you. We're not tied to a single manufacturer, so we can compare products and what fits your home.
What Do Window Labels Mean?
Most windows come with a label that rates their performance. Two numbers matter most here:
- U-factor. How well the window keeps heat from moving through it. Lower is better.
- Solar Heat Gain Coefficient (SHGC). How much of the sun's heat comes through the glass. Lower means less heat gets in, which matters a lot in Texas.
You'll also see ENERGY STAR labels that show a window meets efficiency guidelines for a given climate zone. Make sure the rating fits our region, not somewhere up north.
Does the Frame Matter?
Yes. The glass gets most of the attention, but the frame affects efficiency, durability and how the window looks. Common materials include vinyl, fiberglass, wood and aluminum. Each has strengths and tradeoffs. Older aluminum frames, which you'll see on a lot of North Texas homes, tend to move heat easily. Read our guide on vinyl vs. fiberglass windows for more.
Are Double-Pane Windows Enough?
Double-pane windows with a sealed space between the panes are standard for good reason. Some include gas fills between the panes that slow heat transfer. Triple-pane windows exist too, but in our climate the glass coating often matters more than the number of panes. The key is the whole package: glass, coating, frame and installation.
Why Does Installation Matter So Much?
The best window in the world won't perform if it's installed poorly. Gaps around the frame let hot air and water in. Proper installation includes:
- Removing the old window carefully
- Checking the opening for rot and water damage
- Setting the new window level, plumb and square
- Flashing and sealing correctly so water drains out, not in
- Insulating the gaps around the frame
- Finishing trim and caulk properly
That's where a restoration background helps. We know what water does when it gets behind a window.
What Else Helps Keep Heat Out?
Windows aren't the only answer. A few other things help too:
- Shade trees and landscaping on the west and south sides
- Patio covers and awnings
- Good attic insulation and ventilation
- Window treatments, like blinds and shades
- Keeping windows clean; dirty glass doesn't change efficiency much, but clean glass lets you enjoy the view you paid for
Will New Windows Pay for Themselves?
I won't make you promises about energy savings, because it depends on your house, your old windows, your habits and your utility rates. What I can tell you is that new windows can make rooms more comfortable, help with drafts and noise, and stop water problems. We'll talk honestly about whether replacement makes sense for your home. Here's what affects window replacement cost for your home.
Frequently Asked Questions
What is low-E glass?
A thin coating on the glass that reflects much of the sun's heat while letting light through.
What rating matters most in Texas?
Solar Heat Gain Coefficient is especially important because it measures how much of the sun's heat gets in. Lower is better for hot climates.
Do I need triple-pane windows?
Not necessarily. In our climate, the right glass coating and a good installation often matter more.
Which brands do you install?
We're not tied to a single manufacturer, so we can talk through options for your home.
Ready to talk about cooler rooms? See our windows and exteriors page, call (945) 300-9018, or use the button below to get a window quote.
Keep learning: see our Windows & Exteriors page, read How to Fix Drafty Windows Before Winter in Texas.
Know Your Next Step
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We'll help you understand how G3 can help. Call (945) 300-9018 or use the button below.
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