Few years ago, the basement bathroom tub and "sanitary" tub in the laundry room were clogged. I saw the plumber clear the bathroom tub clog with a snake. Didn't see how he cleared the laundry tub but he spent some time on the roof.
Now the basement bathroom sink needs to be unclogged. I was thinking about snaking it.
Do I have to get on the roof first, and, if so, what procedures should be followed? Thanks again for your help.