When you live where hurricanes happen, you must make smart choices to stay safe. There are four main hurricane ratings for windows. These are impact resistance, pressure, water penetration, and missile (debris) ratings. These ratings help keep your home safe from hurricane damage. Hurricanes cause about $5 billion in losses every year on the Atlantic and Gulf Coasts. Some people believe myths about hurricane windows. They think all hurricane-rated windows protect the same way. Others think hurricane window upgrades only make homes look nicer. Derchi Window and Door products are tested in all four categories. This means you get real storm protection and true hurricane-resistant windows. Make sure you install hurricane windows to stay safe.
Key Takeaways
Learn about the four hurricane window ratings. These are impact resistance, pressure, water penetration, and missile ratings. These ratings help you pick safe windows for your home.
Always look at the Performance Grade (PG) rating when you buy hurricane windows. A high PG rating means better safety from wind, rain, and flying things.
Pick windows with strong impact resistance to stop flying debris. Find windows that meet ASTM E1996 Level D or higher for the best safety.
Check water penetration ratings before you buy. Good water ratings stop leaks that can hurt your house during storms.
Get hurricane windows that fit your local wind speed needs. Use wind speed maps to find the right ratings for where you live.
Impact resistance ratings for hurricane windows
What is impact resistance?
You want your house to stay safe in a hurricane. Impact resistance means windows can handle hits from flying debris. Hurricanes throw things like branches and roof tiles fast. If windows break, wind and rain get inside. This can cause damage and danger for your family. Hurricane impact windows use special glass and strong frames. These features help protect your home. You need windows with high impact resistance to keep your family safe.
Impact testing methods
Manufacturers test hurricane windows using strict rules. The American Society for Testing & Materials (ASTM) makes these rules. There are two main impact tests:
Test Type | Missile Type | Speed (fps) | Wind Load Cycles | Maximum Hole Size |
|---|---|---|---|---|
Large Missile | 9 lb 2×4 | 50 | 9000 | No hole larger than 1/16 x 5" |
Small Missile | 10 ball bearings | 80 | 9000 | N/A |
ASTM E1996-02 | Various missiles | 40-130 | N/A | N/A |
Impact-resistant windows must pass tests based on their height. Large missile tests use a 9 lb 2×4 plank shot at 50 feet per second. Small missile tests use 10 ball bearings at 80 feet per second. These tests show how windows work in real hurricanes.
ASTM E1996 levels A-E
ASTM E1996 has five levels for hurricane windows. Each level uses different objects and speeds. You should know which level your windows meet.
Level | Description | Missile Type | Impact Speed |
|---|---|---|---|
A | Small Missile Impact | 2 g steel ball | 130 ft/s |
B | Lightweight Projectile | 2 lb '2×4' | 50 ft/s |
C | Medium Missile Impact | 4 lb '2×4' | 40 ft/s |
D | Large Missile Impact (Common Standard) | 9 lb '2×4' | 50 ft/s |
E | Enhanced Protection (Essential Facilities) | 9 lb '2×4' | 80 ft/s |
Most homes should use windows that meet Level D. Derchi Window and Door offers Grade-A, B, and C hurricane windows. These products use strong glass and frames. You get protection that meets tough standards. When you choose windows with the right impact resistance, you keep your home safe.
Tip: Always ask for proof of ASTM E1996 certification before you buy hurricane glass or impact glass windows.
Pressure ratings for hurricane-rated windows
Understanding design pressure (DP)
You want your house to stay safe in a hurricane. Design pressure (DP) ratings show how much wind your windows can take. If a window has a high DP rating, it can handle stronger winds. DP ratings use numbers to measure this strength. To find the wind speed a window can handle, multiply the square root of the DP by 20. For example, a DP of 50 means the window can handle about 141 mph winds. DP ratings also depend on your building’s height, the window’s size, and where you put it. You need windows with high DP ratings to keep your family safe and stop damage.
DP ratings tell you how strong a window is against wind.
Higher DP means the window protects better from hurricane winds.
DP ratings use positive and negative numbers to show how windows handle wind from different directions.
Performance grade (PG) explained
Performance grade (PG) shows how well hurricane windows work. PG includes the DP rating, but also checks water resistance and air leakage. If you pick windows with a high PG, they can handle tough storms. You want windows that pass all these tests, not just one. Derchi tests every hurricane window for high wind pressures. This means you get real protection.
Tip: Always ask for the PG rating when you buy hurricane windows. This rating proves your windows can handle hurricanes, rain, and wind.
Wind speed categories (1-5)
Hurricanes have five categories. Each category means stronger winds and more danger. You need to match your windows to the right wind speed category. The table below shows how wind speed categories connect to design pressure:
Wind Speed Category | Corresponding Design Pressure (DP) | Wind Speed (mph) |
|---|---|---|
Category 5 | About 50 | 157+ |
When you choose hurricane windows, make sure they meet the right DP for your area. Derchi hurricane windows are tested for the highest wind pressures. You can feel safe knowing your home has strong protection against hurricanes.
Water penetration ratings for hurricane-resistant windows
Water resistance testing
You want your house to stay dry in a hurricane. Water penetration testing checks if hurricane-resistant windows keep water out. Strong winds and rain can push water against your windows. Test labs use strict rules to check this. The two main tests are called ASTM E547 and ASTM E331. These tests use air pressure and water spray to see if water leaks through.
Test Method | Description |
|---|---|
ASTM E547 | Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Cyclic Static Air Pressure Difference |
ASTM E331 | Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference |
If your hurricane windows pass these tests, they can handle real storms.
What water ratings mean
Water ratings show how much water pressure hurricane-resistant windows can take before leaking. A higher rating means the window protects better. The American Architectural Manufacturers Association (AAMA) makes the rules for these ratings. You should always check the water rating before you buy hurricane-grade windows. If you do not check, water can get inside and hurt your walls and floors. Even if your hurricane glass does not break, water leaks can still ruin your home.
Note: Water getting inside is the main problem in homes that survive hurricanes. It can hurt your home’s structure and finishes.
Importance for hurricane impact windows
You need hurricane-resistant windows with strong water ratings to protect your home. Hurricanes bring heavy rain and strong winds. If your windows let water in, you might have expensive repairs. Water penetration ratings help you compare hurricane-rated windows and pick the best ones. Derchi hurricane windows are special because they use advanced sealing systems and have a 15 PSF water resistance rating.
Feature | Description |
|---|---|
Water Infiltration Resistance | Advanced sealing systems prevent water penetration during storms |
Water Resistance | 15 PSF Rating |
Choose Derchi hurricane windows for peace of mind. You get protection from both wind and water. Make the smart choice and keep your home safe from hurricane damage.
Missile (debris) ratings for hurricane impact windows
Missile categories: small, large, high-velocity
You should know what debris your windows can block. Hurricanes throw different things at windows. Testing labs use missile categories to show how windows handle debris. Here is a simple table to help you:
Missile Category | Debris Type Simulated |
|---|---|
Small Missile | Flying roof gravel, tree branches, small debris |
Large Missile | Pieces of lumber, heavy branches |
Small missile tests check if windows stop gravel or branches. Large missile tests use heavy wood to show worst debris. High-velocity missiles hit windows even faster. These happen in strong hurricanes. Most homes need large missile protection. Hurricanes often throw big things at windows.
How missile tests are performed
You want proof your windows can take hits. TAS 201 and ASTM E1886 set rules for these tests. Testers shoot a 9-pound piece of wood at the window fast. After the hit, they push wind pressure thousands of times. This copies what happens in a real hurricane. If the window stays strong, it passes. This shows which windows really protect your home.
Standard | TAS 201 – Impact Test Procedures |
|---|---|
Scope | Covers test steps for hurricane impact tests. |
Applicable Products | Includes wall cladding, glass block, exterior doors, garage doors, skylights, exterior windows, storm shutters, etc. |
Test Procedure | Shoots a 9-pound timber at set speeds to check impact resistance. |
End Result | Shows if products meet hurricane impact rules. |
Tip: Always ask for test results before buying hurricane windows. You need windows that pass tough tests.
Grade levels for hurricane-rated windows
You should pick windows with the right grade. Grade levels show how well windows block debris. Here is what to look for:
Large missile tests use a 9-pound wood piece. This copies dangerous debris from big hurricanes.
Small missile tests use gravel-sized objects. This checks if windows stop smaller debris.
Large missile tests are needed for windows and doors 30 feet or less above ground. If windows are higher, small missile tests may be enough.
Most homes need large missile resistance for best safety.
Derchi hurricane windows pass both large and small missile tests. You can feel safe knowing your windows protect your family from flying debris and storms. Choose Derchi for windows that meet top standards and keep your home safe.
Choosing hurricane windows using ratings
Interpreting the four ratings
You want your house safe during hurricanes. To pick the right windows, you need to know what hurricane ratings mean. Each rating tells you how well hurricane impact windows work. Some people only care about price or style. This can lead to mistakes. You can make a better choice by following these tips:
Always check the Performance Grade (PG) rating. PG shows wind resistance better than just the Design Pressure (DP) rating.
Look at your local building codes. Some places need certain PG ratings for hurricane-resistant windows.
Ask a professional installer for help. Experts know which hurricane impact windows fit your home and weather.
Remember energy efficiency. Good hurricane windows can lower your cooling bills and keep your house comfy.
Pick windows that look good with your house. The right windows make your home look better and worth more.
Tip: Do not buy hurricane impact windows just because they are cheap. Quality and good installation are most important for safety.
Matching ratings to your needs
You need hurricane ratings for windows that fit your area and house. First, find out your design wind speed. If you live close to the coast, you may need windows for 150–180 mph winds. Homes farther from the coast usually need 130–140 mph. Your exposure category matters too. Houses near open water get stronger winds than homes with trees or buildings around.
Use wind speed maps to see your risk.
Check if your house is in a wind-borne debris area. If it is, you must use hurricane impact windows for best safety.
For normal coastal areas, get DP 50+ windows. In high-velocity hurricane zones, pick DP 70+.
Think about your window size. Bigger windows need higher ratings.
Choose between impact-rated windows and non-impact windows with shutters. Impact-rated windows give you less noise, UV protection, and more security every day. Shutters cost less at first but you must put them up before storms.
Note: The best hurricane-resistant windows use SentryGlas Plus (SGP) layers for stronger impact resistance.
Why Derchi hurricane windows stand out
You want windows that do more than just meet the rules. Derchi hurricane impact windows set a higher standard for safety. Every window gets tested for all four hurricane ratings for windows. You can feel calm knowing your house is ready for storms.
Feature | Description |
|---|---|
Impact Resistance Standards | Meets the toughest impact resistance standards for hurricane areas. |
Testing | Goes through hard tests for strong winds and flying debris. |
Frame Material | Strong aluminum frames keep windows sturdy. |
Glass Type | Impact-resistant glass keeps you safe in bad weather. |
Hardware Systems | Tough hardware makes windows last and adds security. |
Derchi hurricane windows also have top certifications. These include ISO 9001 for quality, Passive House Institute for real-life performance, and Cradle to Cradle Certified for green standards. You get hurricane impact windows that give real protection and last a long time.
Certification Type | Description |
|---|---|
ISO 9001, ISO 14001, ISO 50001 | Quality, environment, and energy management systems. |
Passive House Institute | Third-party tests for real-life performance. |
Cradle to Cradle Certified® | Green labels for strict building rules. |
QUALICOAT, QUALIMARINE, QUALIDÉCO | Trusted labels for strong and nice-looking finishes. |
WINTECH | Checks curtain walls, glass, and window frames for safety. |
When you pick Derchi, you get hurricane windows that protect your family and home. You also get peace of mind. You get the benefits of new technology, strong materials, and trusted certifications. Make the smart choice for safety—choose Derchi hurricane impact windows.
You can keep your home safer if you know about the four hurricane window rating categories. If you pick hurricane windows with the best ratings, you get strong protection from wind, flying debris, and water. You also pay less for insurance and your house is worth more. These windows help save energy and make your home quieter. Derchi Window and Door products meet the top standards in all four categories. Use what you learn to choose the best windows and keep your family safe before hurricane season comes.
FAQ
What makes hurricane-rated windows different from regular windows?
Hurricane-rated windows have much stronger glass and frames. They protect your house from flying debris, strong wind, and water. Regular windows can break fast during storms. Pick hurricane-rated windows to keep your family and home safe.
Do I need hurricane windows if I already have shutters?
Yes, you still need them. Hurricane windows protect you all year long. You do not have to put up or store shutters. These windows also make your house quieter, safer, and save energy.
How do I know if a window meets hurricane standards?
Always look for certifications like ASTM E1996 and DP ratings. Ask your window company for proof of testing. Derchi windows meet or go beyond all big hurricane standards.
Can hurricane windows help lower my insurance costs?
Many insurance companies give discounts for hurricane-rated windows. You can save money and keep your home safe at the same time. Ask your insurance agent about these savings.
Why should I choose Derchi hurricane windows?
You get the best impact resistance.
You have strong water and wind protection.
You get trusted certifications.
You make your home safer for many years.
