North Country Lightweight Slate Roof System provides a 100% natural slate roof to be installed at a reduced weight. It’s that simple.
This innovative lightweight slate roof system developed by SlateTec 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 with little to no structural support requirements. Designed and manufactured using North American-produced products and featuring our complete range of natural North Country Slate ASTM S-1 roofing shingles, this system offers the security and appearance of a traditional slate roof at a fraction of the weight.
Utilizing 12” or 14” length slate, installed using 2 slating nails, this lightweight slate roof system is very similar to traditional installation techniques while utilizing a patented, rugged interlayment to provide the same degree of weathertight protection. Slates of various colors, sizes and thicknesses 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.
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.
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 timeless 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 of Natural Slate Roofing-UL790:***
- Natural slate received IBC Class A (highest fire rating available) Fire Resistance Rating when 1/4” thick, North American slate shingles were installed at 3” headlap over No. 30 felt underlayment on 1/2” plywood roof deck.
* 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.
** Not all colors were included at time of testing.
*** SlateTec Interlayment was not installed for this test method.
North Country Lightweight Slate System Brochure & Info Sheets
FAQs
Is this “real” slate?
Yes, this is a lightweight roof system that utilizes “real” 100% natural ASTM S-1 slate shingles in 12” or 14” lengths.
Why does this roof weigh so much less than a traditionally installed slate roof?
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.
Does a SlateTec lightweight slate roof look any different than a traditionally installed slate roof?
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.
Is this slate roof system a good alternative to my existing cedar shake, asphalt shingle, or fake slate roof?
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
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.
