Outstanding Natural Slate Material
Uncompromising Quality

Lightweight Slate Roofing

North Country Slate has teamed up with the SlateTec lightweight slate system to provide a 100% natural slate roof to be installed at a reduced weight. It’s that simple.

This innovative lightweight slate roof system allows a 35-40% reduction in roof weight to accommodate slate roofs at less than 6 lbs. per square foot. This system is perfect for new construction or roof replacement upgrades from a cedar shake, plastic fake slate, or asphalt shingle roof without any structural support requirements.  Designed and manufactured using North American produced products with our complete range of natural North Country Slate ASTM S-1 roofing shingles, this system offers the security of a traditional slate roof at a fraction of the weight. 

Lightweight Slate Roofing

Installed using 2 copper slating nails, this lightweight slate roof system is very similar to traditional installation techniques while utilizing their patented, rugged interlayment to provide the same degree of weathertight protection. Slates of various color, size and thickness can be blended to create a truly unique natural slate roof. Nothing will match the exceptional appearance of a beautiful lightweight slate roof.

  • 1/4″ – 3/8” slate weighs less than 6 lbs. per sq. ft.
  • 3/8” – 1/2” slate weighs less than 9 lbs. per sq. ft.

SlateTec interlayment is specifically designed as a weather barrier for this non-traditional installation, reducing the overall quantity of slate required in a traditional slate application. This system creates savings in overall roof weight, installation labor, and shipping costs while maintaining all the same aesthetics as a traditionally installed slate roof.  

Lightweight Slate Roof Colors

Pick a Slate Color

With North Country Slate’s ability to supply our complete range of North American produced slate colors, nothing matches the exceptional appearance of a picturesque SlateTec roof. It adds value to your project that will withstand all the tests of nature. 

 

Testing Standards Achieved:

Hail Impact:

  • Class 3 Hail Impact Rating: FM 4473 for 1/4″-3/8” 
  • Class 4 Hail Impact Rating: FM 4473 for 3/8”-1/2”

Wind / Rain:

  • TAS 100 A; Passed110 MPH Wind/Rain (Dade County Protocol)

Fire Resistance Rating:

  • ASTM E-108: With a class A board or shield installed under SlateTec for a Class A rating.

***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.

North Country Lightweight Slate System Brochure & Info Sheets

Unfading Grey Lightweight Slate Roofing Long View

Info Sheet

Unfading Grey Lightweight Slate Roofing

Installation Detail Recommendations​

FAQs

Yes, this is a lightweight roof system that utilizes “real” 100% natural ASTM S-1 slate shingles in 12” or 14” lengths.

This lightweight roofing system will reduce roof weight by roughly 40% because it requires less slate overlap without compromising the integrity of the roof. The traditional overlapping slate courses are replaced with a durable, lightweight HDPE interlayment over each course of slate.

No, there are no visible hooks or aesthetic features that make it look any different from a genuine slate roof system. A full range of colors, thicknesses and staggered butts/hang downs can be used to ensure your new slate roof rises to your expectations. 

Yes! You can easily upgrade to a natural slate roof without the concerns associated with a traditional slate roof’s structural support requirements with this innovative system. It is designed to be installed on cedar, asphalt shingles or faux plastic slate roofs on replacement or new construction projects when a minimum weight requirement of 6 lbs. / sq. ft. is required.

Roofing Contractor Quick Facts

1. 12” slate installed with a 4” overlap = 8” Exposure

  • This is a similar exposure to 18” or 20” traditionally installed slate. 

2. 14” slate installed with a 4” overlap = 10” Exposure

  • This is a similar exposure to 22” or 24” traditionally installed slate. 

3. Nail holes are located approximately 2 ½” – 3” down from top of slate. 

4. HDPE (High-Density Polyethylene) SlateTec Interlayment rolls (20 mm) are 21” x 310’. 

5. Each roll of interlayment covers approximately 200 square feet of area for both 12” & 14” slate. 

6. Approximately 7,000 square feet per truck for 1/4″-3/8” thick slate

7. Approximately 5,000 square feet per truck for 3/8”-1/2” thick slate

Lightweight Slate Roofing

SlateTec by North Country Pieces Per Square

  • 12×6 = 300 pcs. / sq.
  • 12×7 =257 pcs. / sq.
  • 12×8 = 225 pcs. / sq.
  • 12×9 = 200 pcs. / sq.
  • 12×10 = 180 pcs. / sq.
  • 12×11 = 164 pcs. / sq.
  • 12×12 = 150 pcs. / sq.
  • 14×7 = 206 pcs. / sq.
  • 14×8 = 180 pcs. / sq.
  • 14×9 = 160 pcs. / sq.
  • 14×10 = 144 pcs. / sq.
  • 14×11 = 131 pcs. / sq.
  • 14×12 = 120 pcs. / sq.
Lightweight Slate Roof Colors

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