Plies in asbestos yarn refers to the number of asbestos yarn strands twisted together.
Cutting into asbestos siding.
If you answer yes to any of the follow questions you could be at risk due to asbestos siding on your home.
Use slow deliberate strokes with the saw under water trickling from a hose pipe or a water bottle with a small hole.
Astm d577 52 provided methods for testing asbestos cloth for heat resistance.
If asbestos remains intact in siding insulation popcorn ceilings or other materials it poses no risk and is not dangerous.
Cement asbestos siding tiles do not need to be removed simply because they contain asbestos.
Asbestos is only dangerous when cut sawn or broken into small enough pieces so that asbestos fibers are sent into the air.
There is no legal requirement to do so nor is there significant real estate benefit.
Is asbestos siding dangerous checklist.
Cut for asbestos fabrics was calculated as grain weight of 100 yards of a single yarn 7000 grains.
Cutting sanding or breaking asbestos cement tiles poses a distinct health hazard.
For details see asbestos textiles.
Saw through a cut line in asbestos cement pipe with a hacksaw fitted with a coarse blade.
Scraping or brushing off old paint from asbestos siding is necessary before repainting but dangerous because it can release small asbestos fibres.
Astm d677 50 pertained to woven asbestos cloth.