Are all asphalt shingles Class A?

Due to the materials used in their construction, most asphalt shingle roof assemblies have a Class A fire resistance rating.

Are asphalt shingles Class A fire rated?

Fire Rating Classifications

Class A – Class A shingles have the highest fire resistance and are the least flammable, making them a necessity in areas prone to wildfires and the preferred choice among homeowners. Class B – Class B shingles can withstand moderate surface and a maximum flame spread of eight feet.

What is a Class A roof shingle?

Class A is the highest rating, offering the highest resistance to fire, and unrated is the worst. Examples of a Class A roof covering include concrete or clay roof tiles, fiberglass asphalt composition shingles and metal roofs. An example of an unrated covering is an untreated wood shake roof.

What fire rating is shingles?

Fiber-cement shingles and clapboards, made from a mix of portland cement, sand, and wood, usually carry a Class A fire rating, which means they can withstand 2 to 4 hours of high heat before your home's structure starts to fail.

What are the different grades of asphalt shingles?

There are three grades of asphalt shingles to choose from, which are 3 tab shingles, architectural shingles, and impact resistant shingles.

Hail Proof Roofing Shingles? Class 4 Hail Rating Explained

Are asphalt shingles Class B?

Due to the materials used in their construction, most asphalt shingle roof assemblies have a Class A fire resistance rating. Fire resistance is based on two test standards: UL 790 and ASTM E 108.

What is a Class 4 shingle?

To receive a Class 4 rating, a roofing shingle must withstand having a 2-inch steel ball dropped multiple times from a height of 20 feet. For more perspective, if this same test is repeated on a 4-inch concrete paver, the force of the steel ball would crack the paver in half.

What makes a roof Class A?

Class A materials include flat or barrel-shaped roof tiles, fiberglass asphalt composition shingles, and metal roofs (i.e., steel or copper). Fire-retardant pressure-treated shakes and shingles are the most common Class B roofing material.

What is a Class C shingle?

• Class C roof coverings, which are effective against light fire test exposures. Under such exposures, the roof coverings afford a degree of fire protection to the roof deck, do not slip from position, and are not expected to produce flying brands.

What is a Class 2 shingle?

A class 2 is able to withstand a 1.5-inch diameter object dropped at 14 feet. Class 3 shingles can handle a 1.75-inch object being dropped from 17 feet, and class 4 shingles can take a 2-inch object from 20 feet.

What is the difference between Class A and Class C roofing?

This standard includes three classes of fire exposure: • Class A roof coverings, which are effective against severe fire test exposures • Class B roof coverings, which are effective against moderate fire test exposures • Class C roof coverings, which are effective against light fire test exposures.

What class is a 30 year shingle?

30 year impact resistant shingles vary in strength from class 1 to class 4. The type of class determines the material and the resistance of the shingle. Generally class 4 is the highest level of protection making the shingle less susceptible to hail damage or damage from other storms or weather debris.

What is a Class 3 shingles?

A Class 3 rating is given to shingles that do not crack after being hit by a steel ball, measuring 1.75” in diameter and dropped from twenty feet. Class 4 is the highest after taking a hit from the same twenty foot height with a two-inch steel ball.

Which shingles are not fire rated?

Class A is the most fire-resistant and should be the choice of anyone living in wildfire-prone areas. Common Class A roof coverings include asphalt fiberglass composition shingles and concrete or clay tiles.

What is a Class B roof?

Class B roof assemblies are those that are effective against moderate fire-test exposure. Class B roof assemblies and roof coverings shall be listed and identified as Class B by an approved testing agency.

Are asphalt shingles non combustible?

A fire resistant roof will give a structure a better chance of survival. The most common form of roofing material today is the fiberglass asphalt shingle roof. It is also extremely fire retardant. Shingles are categorized by classes, Class-A roofing materials being the most fire resistant.

What is the difference between a Class 3 and Class 4 shingle?

Class 3 shingles can withstand ice balls that are 44 mm or 1.75 inches in diameter. Class 4 shingles can withstand ice balls that are 50.8 mm or 2 inches in diameter.

Is rolled roofing Class A?

The underlying Type 72 capsheet (roll roofing) material provides additional protections, and is required for the Class A rating.

What class are architectural shingles?

Architectural shingles are fiberglass reinforced asphalt shingles. Since fiberglass is derived from inorganic, non-combustible materials, the mat base of an architectural shingle is fire resistant. Therefore, architectural shingles have a Class A fire resistance rating and can provide safe coverage for your home.

Is a TPO roof Class A?

Fire-Rated, Class A – Both TPO and EPDM membranes are Class A fire-resistant.

What is the difference between composition and asphalt shingles?

Yes, composition shingles and asphalt shingles are the same thing. It's simply just another term the roofing industry uses for asphalt shingles. The term “composition” comes from the fact that asphalt shingles are a composite of man-made materials.

How can I tell if my shingles are Class 4?

Shingles are rated Class 1 through 4, with Class 4 shingles having the highest resistance. The impact rating is usually marked on the underside of the shingle or on the packaging. You will not be able to tell the impact rating by looking at a shingle.

Are CertainTeed landmark shingles Class 3 or 4?

Heat. Our impact resistant shingles are tough. And we've got the evidence to prove it. Each shingle in our line is made from materials that have achieved the highest impact resistance rating—Class 4—during testing performed with steel balls simulating 90-mph hailstones of varying sizes.

Are Timberline HD shingles Class 4?

Timberline® ArmorShield™ II Impact-Resistant Shingles combine the beauty of Timberline® (North America's #1-selling shingle) with UL 2218 Class 4 Impact Resistance.

How many classes of shingles are there?

There are three major categories of asphalt roofing shingle products available today - strip shingles, dimensional shingles, and luxury shingles. It is important to understand the differences between each type of roofing shingle in order to pick the right product for your home.