North Country Slate roofing contains a pleasing variation in shade, veining, texture and grain. No other slate roof products can duplicate these natural characteristics, and the specification of North Country Slate products on fine homes and historic buildings across the continent is a testament to their durability and beauty.
Benefits of Slate Roofing
North Country roofing shingles, when fixed with non-corroding nails or hooks, can provide a service life in excess of 100 years.
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-FireResistanceOfSlateTesting
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
Impact Resistance of Natural Slate Testing Video https://www.youtube.com/watch?v=Ehk8QMKlyIY
- 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.
Delivery of Roofing Materials
Wherever you are, no matter what the scale of the job, North Country Slate goes the extra distance to deliver the quality roofing products and expert support that has made us famous with industry professionals and building owners worldwide.