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Corrugated asbestos-cement roof sheeting typically has a lifespan of about 30-50 years. However, this can vary depending on factors such as maintenance, weather conditions, and exposure to UV radiation. Regular inspections and maintenance can help prolong its lifespan.
2.4 metre sheet of Big Six corrugated asbestos roof sheeting weighs 38kg
As long as roof is structurally sound and the abestos is in good condition, is not flaking, and has not recently been drilled, sawn etc, then the health hazard is minimal.
5 years
The thatch roof is thicker and a better insulator than thin corrugated iron.
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You can but it is not recommended. The old roofing sheets will promote corrosion under the new sheets. Far better to remove the old corrugated roofing first.
A traditional shingled roof lasts about 10 - 15 years. You can get much more bang for your buck with a corrugated roof. They are much more durable long term
A concrete base. A steel, angle-iron, bolted-up frame. Corrugated asbestos cement cladding and roof sheets, attached to the steel frame using steel J bolts.
Painting a roof white has nothing to do with whether it contains asbestos or not. White efficiently reflects the sun's heat, helping to keep the space under the roof cooler than it would otherwise be in a different color.
If you decide to go with a cider roof you should do some research on how long this is going to last. I know from personal experience that a cider roof lasts about 10-15 years. There are very reliable in harsh weather.
Check the roof for asbestos marking or the packing that it came in. If you are still trying to figure out if there is asbestos, call the manufacturer and they can give you details.