What are Impact Resistant Windows?

At Eco Choice Windows, we know how important it is to keep your home safe, especially if you live in areas that get hit by hurricanes. That’s why understanding impact-resistant windows can make all the difference in protecting your house and family when storms roll in. Let’s break down what these windows are, how they work, and why they might be a smart choice for your home.

What Are Impact-Resistant Windows Made Of?

Impact-resistant windows, also known as hurricane windows, are designed to handle the intense stress from hurricane-force winds and flying debris. But what makes them different from regular windows? Here’s the breakdown:

1. Two Layers of Strong Glass:
These windows are built with two panes of shatter-resistant glass. If a projectile breaks the outer layer, the inner one stays intact, stopping debris from getting inside. Plus, this glass doesn’t shatter into dangerous pieces.

2. An Adhesive Layer:
Between the glass layers, there’s a special adhesive (like PVB or EVA), which holds the panes together. It’s the same type used in car windshields to stop glass from breaking into sharp pieces.

3. Strong Frames:
The frame holding the glass is also tough. It can be made of metal (the strongest and most durable option), vinyl, or wood. Metal frames are the sturdiest but also the most expensive, while wood is the most budget-friendly but needs more upkeep.

How Do Impact-Resistant Windows Get Certified?

Not just any double-paned window can be called impact-resistant. To earn that official label, windows need to pass strict tests by the American Society for Testing and Materials (ASTM). Here’s what they go through:

Large Missile Impact Test
In this test, the window must withstand the hit of a heavy two-by-four piece of wood shot at high speed. This simulates what might happen during a storm when debris flies around.

Small Missile Impact Test
For this, steel balls are fired at the glass at a speed of 130 feet per second. This tests how well the window can handle smaller debris, like gravel or branches.

Wind Simulation Test
After passing the impact tests, the window faces simulated hurricane-force winds of up to 200 mph. This ensures it can handle strong wind pressure without failing.

Who Needs Impact-Resistant Windows?

If you live in a hurricane-prone area—think Florida or the Gulf Coast—impact-resistant windows are almost a must. In Florida, for example, each region has its hurricane evacuation code, with the most vulnerable zones labeled A, B, and C. Homeowners in these areas benefit the most from installing impact windows.

Not sure if you need them? Check out the Florida Division of Emergency Management’s interactive map to see your evacuation zone.

Why Are Impact-Resistant Windows Important?

These windows don’t just stop glass from breaking; they do much more:

Prevent Flying Shards
Impact-resistant glass stays in place even if it breaks, which means you don’t have to worry about shards flying around and causing injuries or damage.

Stop Water Damage
If a storm breaks through the outer pane, the inner layer still holds, preventing water from rushing into your home.

Maintain Structural Safety
Keeping the wind out is crucial. If hurricane winds enter your home, they can raise the internal pressure and cause walls or the roof to collapse. Impact windows help keep your home sealed and safe.

How Can You Tell If Your Windows Are Impact-Resistant?

Not sure if you already have these windows? Here are some quick tips to check:

• Look for an Etched Mark: Check the corners of your window for a mark showing the manufacturer’s name, date, and specs. If there isn’t one, a stick-on label might have the info.
• Check Reflections: Stand in front of your window and see how many reflections you spot. Impact-resistant windows will show two reflections, not just one. Try this at night for better results.
• Review Your Home’s Deed: If you’re in South Florida and your home was built after July 2001, it should have impact-resistant windows by code. The deed can confirm when your house was constructed.

 Final Thoughts

While you can use temporary measures like plywood during a hurricane warning, impact-resistant windows offer superior, long-term protection. If you’re building a new home or updating your current one, consider installing them. A bit of investment now can mean years of safety and savings on insurance.

Want to learn more about keeping your home safe with impact-resistant windows? Reach out to Eco Choice Windows, and we’ll help you find the best option for your needs.