I'm not sure where to post this, but ultimately it's about the asbestos siding on my house. I'd like to hang exterior window boxes don't know how (or even if it's safe) to drill in the siding. I've researched "no drill" hanging methods, such as vinyl siding hooks, but am doubtful that hooks would have a place to go in the asbestos siding. Can anyone out there advise me? Thanks.