Hurricanes are among the natural disasters that can cause serious damage to properties, especially those located in coastal areas in Florida.

The high-speed winds, rain, and debris can break glass windows and doors, leaving homes and businesses vulnerable to further destruction. Hurricane impact windows were created to prevent this, but what makes them strong and efficient? Read on to learn more about these high-performing products and how they can protect you.

Understanding Hurricane Impacts

Hurricane impact windows are made of two or more layers of glass sealed together with a polyvinyl butyral (PVB) layer between them. This composition contributes to their resistance to breaking, as the inner layer can absorb the impact and prevent the glass from shattering.

Additionally, these windows are thicker and heavier than conventional ones. They can be between 7/16 to 1 inch thick and add extra protection against flying debris.

How Does Hurricane Impact Windows Work?

Aside from their composition, hurricane impact windows have a rating system tested for their strength and durability. Manufacturers simulate hurricane conditions in their laboratories to determine the wind and pressure loads the windows can resist.

The PVB layer between the glass panes keeps the window intact, even if the outer layer breaks. This allows homeowners and tenants to evacuate the premises safely while maintaining the building's structural integrity.

Standards for Hurricane Impact Window Strength

Building codes in states prone to hurricanes have established standards to ensure that products meet the requirements to qualify as hurricane-impact windows. These include the American Society for Testing and Materials (ASTM) and the Miami-Dade County requirements.

Miami-Dade County's code is among the strictest in the country and requires products to withstand 110 mph winds, a two-by-four wooden beam traveling 50 feet per second, and cycling pressure changes. These standards guarantee that impact windows can withstand the rigors of hurricane season and keep people and properties safe.