Thank you for all of the flat roof recommendations. I'm now looking for a plumber who is really good at figuring out the seemingly impossible. Our 60 year old stand up shower has leaked off and on for the past 5 months. Thought we had it solved but it started up again last week. Have opened up sections of the floor below, have caulked and grouted, and can't figure it out. Thank you!! Kate Sent from my iPhone Confidentiality Notice: This e-mail message, including any attachments, is for the sole use of the intended recipient(s) and may contain confidential and privileged information. Any unauthorized review, use, disclosure, forwarding, or distribution is prohibited. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. Any questions should be directed to Allegheny County Service Desk at 412-350-HELP (412-350-4357) or e-mail ServiceDesk@AlleghenyCounty.US