Screening of "professionals"??? I'm very disappointed I hired 2 seperate tile installers the first one didn't know what he was doing at all the second one was either ondrugs or alcohol it took him more than a week to do 40sq ft of floor tile. Then sent unintelligible text messages from 2am to 7am begging for more money and then just kept the down payment I already gave him and never showed back up Thumbtack must not have any kind if screening process at all !