Outstanding Natural Slate Material
Uncompromising Quality

Our Natural North Country Roofing Slate Benefits

North Country roofing shingles, when fixed with non-corroding nails or hooks, can provide a service life in excess of 100 years.

  • Requires minimal maintenance
  • Durable and long lasting
  • Resistant to chemical pollutants and acid rain
  • Non-combustible and fireproof
  • Unaffected by freeze/thaw cycles
  • Environmentally safe
  • Resistant to hail and other impact damage
  • Performance proven on rooftops
  • Delivered from stock
  • Available in unfading or weathering colors
  • Available in special shapes
  • Available in a wide variety of sizes
  • ASTM E108-10 Class A (highest) Fire Resistance Rating*
  • FM4473 Class 3 or Class 4 Hail Impact Rating**
  • ASTM D3161-15 Class F (highest) Wind Resistance Rating***

*As per 2015 International Building Code section 1505.2 and tested by the National Slate Association July 13, 2010.

**As tested by the National Slate Association February 25, 2010.

***As tested by the National Slate Association December 8, 2015.

Fire Resistance of Natural Slate Roofing – UL 790

“Standard Test Methods for Fire Tests of Roof Coverings ”

Natural slate received IBC Class A (highest fire rating available) Fire Resistance Rating when 1/4” thick, North American slate shingles were installed at a 3” headlap over No. 30 felt underlayment on a 1/2″ plywood roof deck.

Click on report – NSA Fire Resistance Of Slate Test Report

Complying with Factory Mutual FM 4473, Specification Test

Standards For Impact Resistant Testing Of Rigid Roofing Materials

By Impacting With Freezer Ice Balls.

3/8” thick, S-1 rated, North American produced roofing slate met Class 4 requirements, surviving the impact of 2” ice balls travelling at 76 MPH.

1/4″ thick, S-1 rated, North American produced roofing slate met Class 3 requirements, surviving the impact of 1 3/4″ ice balls travelling at 69 MPH.

Click on report – Hail Test Report

It is important to note that some insurance companies offer a reduction in residential insurance premiums when a Class 3 or Class 4 rating is met.

Impact Resistance of Natural Slate Testing Video

ASTM D3161/D3161M-15: Standard Test Method for Wind Resistance of Steep Slope Roofing Products (Fan-Induced Method)

Testing conducted by PRI Construction Materials Technologies LLC, 1/4’’ thick, S-1 rated, North American produced roofing slate met the requirements of the highest Class F (110 mph) roofing product.

Click on report: ASTM D3161 D3161M-15 Standard Test Method for Wind-Resistance of Steep Slope Roofing Products

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