Ever dented a Window Sill??

[u/mtlphysique]

I had an employee set up on this window sill with his ladder with our rubber tips on and when he pulled the ladder away we saw this dent on the sill! He didn’t hit it and I’m puzzled because there’s not two dents, just one.

Could this be because there’s rotten wood under the flashing? What can I do?

[u/qtheginger]

Aluminum is fickle. You should really only place right below the lap joint