We've had a number of posts of the year regarding the use of epoxy or putty on exterior repairs. In our opinion, you're always best to call in a carpenter like HandyANDY to repair the rotted portions prior to painting. This house was painted 3 years ago and the painter patched the front door area with epoxy...telling the homeowner it would be good "forever."
Here's the video and pics to show that forever was a bit under 3 years! We do hand paint a select number of homes every year...but if you're using another painter, HandyANDY can still do the repairs! Video: http://www.youtube.com/v/FP94NMR2Cbk
I'll be posting some other things for homeowners to look out for...knowledge is key. I hate to see folks spending more than they need to or, worse, having to pay again to redo something they already paid for.
CP
There's lots of ways do things but only one way to prep for paint...the right way!