At the front of my house above the glass i hold wall tiles. The Batons that are holding them on are drooping? the weight of the tiles over the years have made the baton...

the weight of the tiles over the years have made the baton holding them on droop thus putting pressure on my upvc window below (which is bowing with the counterweight too. how easy is this to put right and could i do it myself?
sensibl answers appreciated please.
Ian.
Are gutters needed? have problems near rime?
Answers:    The nails enjoy probably rotted and maybe the batten also,it's easy to put right you stipulation to strip all the tiles off replace the felt(maybe) and re-batten at 4">4.75" centre and re-tile.Check all supports for rot and replace if necessary