/diy/ - Do It Yourself

What's up with the frame of my shed? The wood isn't soft but is that black stuff the beginning of rot? Can I mitigate it by applying some penetrating waterproofer?

>>1612736
Try to find a rust converter. Make sure it'll chemically change the rust, some are basically just primers (Rustoleum rust reformer). You could use Evaporust gel, but really that doesn't look so bad you can't just use an abrasive pad.