As a result geologist emphasizes natural slate durability to last over a century.
Slate roofing faqs.
Natural cleavage allows slate to be split in one direction with the length running in the direction of the grain.
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A tiny amount of colour lightening will occur with ceramic tiles but will be imperceptible to the naked eye.
Any roofing construction that conforms to good engineering practice and is suitable for other roofing material is adequate.
Harder slates can conceivably last centuries on a properly maintained roof.
A quote from the national slate association states for regular slate with a weight of 700 750 lbs.
Consequently not all homes have the structural support necessary to take the weight of a slate roof and often additional reinforcement needs to be installed.
One of the drawbacks of slate for some homeowners is the heavy weight of slate roofing tiles which can be between 800 1 500 pounds per square 100 square feet.
The region where it was quarried determines the life expectancy of roofing slate.
Softer s2 or s3 slates may last about 55 years to 100 years.
Natural slate is the most durable roofing material.
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Walsh highlights that natural slates have a service life of greater than 100 years.
Over the lifetime of a slate roof a certain amount of weathering will occur which is deemed by many to enhance the beauty of the slate.