When installing or replacing windows in a home, safety is just as important as energy efficiency and appearance. Building codes require tempered safety glass in specific locations to reduce the risk of injury if the glass breaks. Tempered glass is specially heat-treated so that when it shatters, it breaks into small, blunt pieces rather than dangerous sharp shards.

At Viviano Windows, we ensure that every window installation follows modern building codes and safety standards so homeowners can enjoy both beauty and peace of mind.

What Is Tempered Glass?

Tempered glass is created through a process where standard glass is heated to extremely high temperatures and then rapidly cooled. This process strengthens the glass and changes how it breaks.

Key characteristics of tempered glass include:

• Up to four times stronger than standard annealed glass

• Breaks into small, pebble-like pieces rather than sharp shards

• Designed to reduce injury risk during accidents

• Often required by local and national building codes

Because of these safety benefits, tempered glass is mandatory in several areas of the home where accidental impact is more likely.

Tempered glass is not just a design choice—it’s a safety requirement in many locations where people may accidentally fall into or strike the glass.

Locations Where Tempered Windows Are Required

Building codes such as the International Residential Code (IRC) specify areas where tempered safety glass must be used. These rules help protect homeowners from serious injuries caused by broken glass.

1. Windows Near Doors

Any glass located close to a door must often be tempered.

Common requirements include:

• Glass within 24 inches of a door edge

• Glass located within 60 inches of the floor

• Glass that could be impacted when a door swings open

These rules help prevent injuries if someone stumbles through a doorway and hits the nearby window.

2. Bathroom and Shower Areas

Bathrooms present a higher risk because of moisture and slippery surfaces.

Tempered glass is typically required for:

• Windows within 60 inches of a bathtub or shower

• Glass panels in shower enclosures

• Windows that are less than 60 inches from the floor inside bathrooms

This ensures safety if someone slips and falls against the glass.

3. Windows Close to the Floor

Large windows that extend low toward the floor can pose a hazard if someone falls against them.

Tempered glass is usually required when:

• The bottom edge of the glass is less than 18 inches from the floor

• The top edge of the glass is more than 36 inches above the floor

• The window area exceeds 9 square feet

These conditions make it more likely that a person could walk or fall into the glass.

4. Stairways and Landings

Windows located near stairs require additional safety precautions because of the risk of falling.

Tempered glass is often required when windows are:

• Adjacent to stairways

• Near stair landings

• Located within 36 inches horizontally from stair steps

This helps protect people moving up or down the stairs from dangerous impacts.

5. Glass Near Walking Paths

If a window is located along a common walking path, building codes may require tempered glass.

Examples include:

• Windows along hallways

• Glass panels near entryways

• Large glass sections in open living areas

These safety measures prevent serious injuries if someone accidentally bumps into the glass.

Benefits of Tempered Windows for Homeowners

Even in areas where tempered glass is not required, many homeowners choose it for added protection.

Advantages include:

• Improved household safety

• Higher impact resistance

• Better durability

• Compliance with building codes

• Increased peace of mind

Tempered windows are especially beneficial for homes with children, pets, or active households.

Professional Installation Matters

Understanding building codes can be complicated, and requirements may vary depending on the home’s design and location. Working with experienced professionals ensures your windows meet all safety standards.

At Viviano Windows, our team carefully evaluates each installation to determine where tempered glass is required. We handle everything from measurement to installation so your home remains safe, compliant, and beautiful.

Whether you’re upgrading older windows or installing new ones, choosing the right materials and following safety codes is essential.