I am looking for advice on what to use on my baseboards to fill gaps. We had all of the baseboards (mdf) in our house professionally installed but my wife didn't like the way the installer was going to "stair-step" the baseboards down a short flight of steps - so she told him to let it go and I would finish it. Lol...
Anyway, as you can see in the pictures, I've completed it the way she wanted it to look but, for various reasons, I had to fill spaces with additional mdf pieces (cut from extra baseboard so the thickness matched). The problem is that not only do I need to fill some gaps, but due to the sheetrock beneath, the points where the edges meet are not all flush (even though the mdf is cut from the same product).
I am hoping that someone here can offer advice on what material I can use, not just to fill the gaps, but also spread a skim coat that will allow me to sand the whole panel smooth (this rules out caulk). I tested using basic wall mud on a sample joint and it seemed to work but I''m not sure about its durability or that it won't crack over time. While I am doubtful, I am hoping that whatever material I use will survive any movement in the mdf (swelling, etc.). Once the gaps are filled and the baseboard sanded smooth, it will be painted to match the rest of the baseboards. Can anyone here point me in the right direction?
Thanks for any help,
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