This was a tricky job, but for not the reason I thought at first. This was an old wooden entrance door frame and on the bottom of it, the wood started to decay. The door threshold (or sill if you like) was in the worst shape, as the previous installer used pine wood which turned into sponge over the years. The bottom part of door frame have seen better days as well, that needed some attention too.
To start with I removed the door sill and hacked out the rotten bits from the door frame. Once finished I used wet rot hardener, which does exactly what it says in its name. Once you treated the soft, spongy wood, it will harden and dry rock solid. While this chemical was drying I used a heatgun to get rid of the old layers of paint on the doorframe. And this took me forever! On the flat parts the heatgun worked like a charm, but on the trims, I struggled a lot until I could scrape off the paint.
Once finished I went back to the doorframe and started patching it up with treated timber. I filled the joints and started to cut the new door sill. I sourced a nice oak plinth and cut it into the right size. Pre-drilled, countersank the wholes, screwed it down and filled the screwholes. And after all this I was ready to start undercoating the whole lot. I left it to dry overnight and the next morning I started again on filler and sandpaper to make sure the old frame will be as smooth as possible.
After this masking again and painting the doorframe with three coates of water based exterior paint. The job turned out to take a little longer than expected, but the customer was really happy with the result!
Screw it! 