Unpopular take: MDF is overrated for workbench tops, here's why I switched back to plywood 2 years ago

I built my first real workbench 3 years ago in my garage in Pittsburgh. Used 3/4 MDF like everyone said. Sealed it with poly and everything. Looked clean for about 6 months. Then one humid summer and the edges started swelling up like a sponge. Had to replace the whole top last year. Switched to 3/4 birch plywood with a hardboard replaceable top layer. Cost me maybe $15 more total and its held up through two wet seasons. Am I missing something or does MDF just not hold up unless you keep your shop climate controlled?

2 comments

2 Comments

emery_taylor12d ago

Three humid summers in a row here in central Ohio and my MDF top is still flat, so maybe it's more about how you seal the edges than the material itself. A couple coats of shellac on the cut edges before polyurethane made a HUGE difference for mine, and I didn't even spring for the high-end stuff. Feels like people blame the wood when it's usually just bad prep.

wendy_park7612d ago

Oh totally, I had the same experience with a desk I built three years ago. I think a lot of people just skip that edge sealing step and then wonder why things go wrong.