You can do this yourself you will need a very fluffy rooler to get into all the grooves when buying your paint just ask they will steer you to the right one. Make sure the surface is clean and avoid using a high pressure washer as bits can break off .

I agree. My parents painted their asbestos siding for years by themselves. You want to avoid having it flake off as that's when asbestos becomes "friable" and dangerous. Keep painting and painting and painting over it!