What is a Class Four Roof?

A Class Four roof is a roofing system that has been designed to withstand severe weather conditions, such as high winds, hail, and severe precipitation. They are typically made of metal, tile, or asphalt shingles. 

Class Four roofs are typically found on commercial and industrial buildings, as well as on some residential homes. They are required in areas that are prone to severe weather conditions and are often subject to building code requirements. 

If you live in an area that is prone to severe weather conditions, or if you are considering a roofing system for your home or business, then you should learn more about these roofs. 

In this article, we will provide everything you need to know about Class Four roofs!

What Are The Four Main Classes Of Roofing Materials?

Class 1

Roofs with a life expectancy of 8-10 years. Typical examples include built-up roofs (BUR), clay tiles, and concrete tiles.

Class 2

Roofs with a life expectancy of 12-25 years. Typical examples include asphalt shingles, wood shakes/shingles, and slate.

Class 3

Roofs with a life expectancy of 30+ years. Examples include terra cotta tile and metal roofs (copper, steel).

Class 4

Roofs with a life expectancy of 50+ years or more. Examples include concrete tile, clay tile, terra cotta tile, slate and wood shake/shingle roofing systems that have been properly installed over an approved substrate such as plywood sheathing or OSB sheathing.

How Do You Know If You Need A Class Four Roof?

If you live in an area that has a lot of snowfall, hail and strong winds, then you may want to consider using a class four roof. These roofs are more expensive than other types of roofs, but they will last longer and be able to withstand harsh weather conditions better than any other type of roofing material.

Some Examples Of Class Four Roofing Include:

Slate roofing

Slate is a non-combustible material that makes a great choice for fireproof roofing. It can also be used for other interior construction projects such as countertops and floors.

Metal roofs

Metal roofs are one of the most popular types of class four roofing available today. They also offer superior durability and strength over other types of materials, which makes them ideal for areas prone to high winds or heavy snowfall.

Galvanized Steel Roofing Panels

These panels come in different sizes, so you can use them as a replacement roof or for new construction. They're available in different thicknesses, so you can choose what's best for your home's needs.

Eternit Panel

This panel is made from a fiber cement board with an asphalt coating that gives it a smooth finish.

How Much Do Class Four Roofs Cost?

A class four roof has a fire rating of at least one hour and is the most popular choice for commercial buildings. In general, a class four roof will cost between $60 and $100 per square foot to install. 

The more expensive materials used in the construction of the roof can raise the price considerably. However, if you have an existing building with a low-quality roof, it may be worthwhile to spend more money and get a better quality product that will last longer.

There are many different types of materials available for class four roofs, each with its own advantages and disadvantages. Some are more durable than others, while others are less expensive but may not last as long or provide other benefits such as insulation or sound reduction. 

It’s important to consider all these factors when comparing different types of materials before making your decision, so you can get the best value for your money without sacrificing quality or durability.


Class Four roofs protect your building from severe weather conditions and are an investment in your property. Get your free estimate from Bryant Roofing.

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