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Slate / Tile

About Us

 

The Process

 

 

ROOFING PRODUCTS

 

Pitched Roofs

 

► Cedar

 

► Composition

 

► Metal

 

► Slate / Tile

 

► Synthetic

 

Low-Pitch / Flat Roofs

 

 

Contact Us

Concrete and clay roof systems have long been popular in the Southwest. They provide a durable roof system in a dry climate, but there are some inherent challenges in a high-moisture climate like the Pacific Northwest. These products are available in numerous tile and slate styles, both in full-weight and light-weight options. The full-weight products often require specific structural engineering to support the roof product weight. In the light-weight variety, the roofs can be installed over conventional framing.

Because these products are made from natural materials like concrete and clay, they are porous by nature and prone to moss growth. As they age, they typically become brittle and susceptible to cracking when walked upon. True or natural slate is easily the most durable roofing product in terms of walkability, but has severe limitations with regard to weight and affordability. Tile is typically installed over battens, and most water infiltration issues are related to blocked sub-roof flashing elements and cracked or broken tiles. Superior substrate preparation is recommended and should incorporate an ice and water shield, treated battens and painted/galvanized screws as fasteners for the batten system.

Product

Exposure

Batten System

 

 

Walkability

Structural
Support

Required

 

Life Expectancy

Concrete Slate

10” - 14”

Yes

Yes

Yes

50+

Light-weight Slate

10” - 14”

Yes

No

No

50+

True Slate

6” - 10”

No

Yes

Yes

Permanent

Clay Tile

14”

Yes

No

Yes

50+

Concrete Tile

14”

Yes

Yes

Yes

50+

Light-weight Tile

14”

Yes

No

No

50+

Pros

Below are links to several manufacturers’ sites. Remember that manufacturers’ web sites are designed to promote their products and will generally provide you with only positive product information.

You can count on Seattle Roof Advisor to provide unbiased advice.

Cons

Even though there are clear limitations with regard to structural issues, with proper substrate preparation, a slate or tile roof system can be an excellent choice for a long-lasting roof system.

  • American Slate Company
  • Boral USA
  • Echeguren Slate Inc.
  • Evergreen Slate Company Inc.
  • Gladding McBean
  • Ludowici Roof Tile Inc.
  • MCA Superior Clay Roofing Tile
  • MonierLifetile LLC

www.americanslate.com

www.boralna.com

www.echeguren.com

www.evergreenslate.com

www.gladdingmcbean.com

www.ludowici.com

www.mca-tile.com

www.monier.com