Opinions about the percentage will vary by roof size type and type of slates installed but for north american slate roofs using american or canadian slates if more than about 25 of the slates on an existing roof need replacement because of the labor cost of working carefully to remove and replace individual areas of bad slate at that.
Slate appearing roofs.
Each panel is comprised of a carbon alloy steel core with hot dipped g90 zinc phosphate anti corrosion coating plus an exterior pvdf paint system.
Slate roofs can and should be maintained and repaired to effectively extend their serviceable lives.
Many slate tile manufacturers offer up to 100 year warranty on their products.
In fact some slate roofs have lasted for literally hundreds of years enduring all of the ravages that mother nature could throw at them.
Slate is a fine grained foliated homogeneous metamorphic rock derived from an original shale type sedimentary rock composed of clay or volcanic ash through low grade regional metamorphism it is the finest grained foliated metamorphic rock.
For people who do not plan to ever sell their home the incredible longevity of slate is a highly desirable benefit.
Our tiles are engineered to be lighter to resist impact and to maintain their color longer.
Affordable genuine slate roofing.
For centuries it s been the roofing material of choice for the world s greatest buildings.
When replacement is necessary details contributing to the appearance of the roof should be retained.
Foliation may not correspond to the original sedimentary layering but instead is in planes perpendicular to the direction of metamorphic compression.
Davinci slate delivers the highest levels of beauty without the typical challenges of a natural slate roof.
Slate roofs are a critical design feature of many historic buildings that cannot be duplicated using substitute materials.
It s the most beautiful and durable roofing material known to man.
Some homes were created with the promise of a slate roof in mind.