Window casing upgrade to plastic/pvc/vinyl/aluminum

aluminumcondensationpvcwindows

I Just had two rooms added to the house, and I totally forgot to mention in the contract that I wanted the window casing to be plastic.
(window frame? The internal part that encases the window basically)

The contractor installed a wood frame, and only agreed to paint it with a separate latex based paint for a bit of extra protection.

I am now looking for a way to do a bit more without too much effort – find a set of plastic or aluminum panels and glue them on top of the wood maybe.

Since I've never really done anything like this, I have questions:

Does this make sense at all?

What paneling (search terms are most welcome) would be thin enough to fit in there?

What type of glue?

If you know of alternative approaches, I'll be happy to hear about those too.

Thanks!

Best Answer

If you are set on PVC then it is probably best if you remove the wood casing and install new PVC casing.

It will be as much (or more) work to hack something on (and may look hacked). Starting over will end up being better looking and easier.

There are multitudes of "How to Case a window" videos on the YouTube. ( watch many not just one) Here is One.