Rotten wooden door plinth under French doors

I would advise a glazer or very competent handy man as the French door would need removing to replace the plinth and I couldn't see many reasons why they couldn't fit a pvc one

You need a joiner /to remove cill He will have the tools to remove the old with out removing the hole door And then fit a new plastic cill . Depending on the state of repair of the hole door you my need to replace the lot Just way up the cost of the repair as to Replacing . Goldenconstruction

Hi I’ve changed a few Its a job most Genral builders could do its Just post it as Property maintenance. When you post the Job Take a few pictures Measure it and describe the job correctly it’s a replacement plinth. And then look online for type you require I think some tradespeople call it a freshhold and with a sloped reducer . If you can find what you want in material type and colour that would make the job easier. Need a multi tool cut in middle should come up then ! Good luck I do like a french door