Typical life for pennsylvania slate roofs is 40 50 years.
Slate roof lifetime.
These life expectancies are general experience with the material and do not consider installation or environmental factors which vary from one building to the next.
For fibre cement roof slates the life expectancy is a little shorter at around 50 60 years.
This can vary depending on the manufacturer.
For people who do not plan to ever sell their home the incredible longevity of slate is a highly desirable benefit.
While man made slates are typically cheaper and easier to install they only tend to last for around 20 years.
The biggest downside to slate tile roofs.
Durability and low maintenance.
Life expectancy of ribbon slates.