Slate Roofing

A slate roof is the perfect combination of durability and classic style, and that’s why we offer the best slate roofing materials for the FireRock collection.

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  • Color Options
  • Specifications
  • Color Options
  • Specifications
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FireRock Slate Roofing

More than any other material, the roof protects the inside of a home from the elements. In addition to protection, the roof also defines the style of a home. A slate roof is the perfect combination of durability and classic style, and that’s why we offer the best slate roofing materials for the FireRock collection.

firerock in Birmingham, AL on Houzz

The Strength of Slate and Attributes

  • Longevity – A slate roof can easily last a century and usually much longer
  • Slate is unaffected by weather extremes
  • Tolerates temperature fluctuations and severe weather events
  • Some slate is Miami-Dade accepted for hurricane zones
  • Slate is very dense and does not absorb water
  • 100% fire proof: exceeds all standards for fire resistance
  • Since slate is stone, it simply doesn’t burn
  • Hail is a major cause of roof damage each year - Slate offers excellent hail resistance
  • In fact, S-1 slate has been tested to withstand class 4 ice balls in simulated severe storm conditions
  • Slate is impervious to mold, mildew and insects
  • Lightweight genuine slate roof systems can weigh less than 6 lbs per sq/ft — making them well suited to replace most cedar shake roofs

Color Options

Slate is never artificially colored. Its color is determined naturally by geological conditions at its formation. Just as slate from different regions vary in durability, it will also vary in color. Slate also varies in its color retention. Some slate is very consistent or “non-weathering” while some exhibit new shades of color over time and are known as “semi-weathering”. Shown here are colors found in Vermont quarries.

Slate’s natural colors can be mixed in endless combinations to create a particular hue to match a design or environment. There are computer simulations for slate color selection. Depending on the intention of the designer, the positioning of the building to viewpoints, and surrounding geography, the roof can become an important visual element.

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Semi-Weathering
Gray/Green

 

Non-Weathering Purple

 

Vermont Clear Gray

 

Unfading Green

 

Vermont Strata Gray

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Vermont Unfading
Purple/Green

 

Non-Weathering
Mottled Green/Purple

 

Vermont Wells Gray

 

Vermont Gray/Black

 

Non-Weathering
Gray/Green

Slate Roofing Specifications by Weight

Slate Density

Each “square” of slate covers 100 square feet.

Slate Grade

Pounds (LBS) per square

LBS per sq ft

Standard Grade “Selects”

680 - 780

6.8 - 7.8

Rough Texture Grade

800 - 1,000

8.0 — 10.0

Architectural Grade

1,200 - 1,600

12.0 - 16.0

Heavy Grade

1,800 - 2,200

18.0 - 22.0

Estate Grade

2,500 - 3,000

25.0 - 30.0

The density of slate contributes to indoor temperature stabilization. Its density makes it heavier than most other roofing materials, particularly in traditional-style slate roof installations. Therefore the overall roof weight must be considered.

Applications

Thanks to new installation technologies, genuine slate is being used more widely in new construction and renovation / re-roofing projects. These new installation systems use approximately 40% less slate (final weight less than 6 lbs/sqft) — reducing material cost and costs related to structural support. This allows projects that were traditionally limited to utilizing asphalt or cedar shakes the opportunity to take advantage of slate roofing.

Slate is also often the material of choice for upscale residences where the aesthetic appeal is also desired. These property owners can also take advantage of the low cost of ownership that is attained through slates’s longevity and enhanced property value.

Slate is particularly appropriate for large institutional projects where the aesthetic appeal of slate is desired and the budget exists to take advantage of the low cost of ownership that is attained through longevity and enhanced property value.

Not sure what direction you want to take with your next project? Contact us to learn from our experts.

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