How to fix a huge gap between tub faucet and tile
The ideal method to repair the gap (if the spout can not be tightened further, is to shorten the length of the pipe nipple that exits the wall and connects to the spout. You need to un-screw the spout and the pipe nipple. Replace with a shorter nipple equal to the gap measurement. Use Teflon tape on all male pipe threads and caulking behind the spout base. The faster, "just as appropriate, but may not look that good", repair is to apply enough caulking into the gap so that it can be smoothed flush with the spout. A third and middle of the road repair is to locate an eschuteon plate. Something like this: http://www.amazon.com/gp/product/B00IKVJEUI?keywords=eschuteon&amp;qid=1445614060&amp;ref_=sr_1_3&amp;s=home-garden&amp;sr=8-3