Thanks so much for the advice and good luck! Your MDF+aluminum doors sound very solid. I’m just curious, how good are they at soundproofing? Better than a regular solid wood door?

This sentence makes a lot of sense

Thank you for your advice. After reading this, I am more inclined to buy solid wood doors.

Really? Aren’t solid wood doors soundproof?

Thank you for your suggestion. Actually, I prefer to buy solid wood doors, but my husband thinks they are a bit expensive and wants to buy WPC doors.

If it’s easy to remove, you can take off the part that’s coming loose, clean off any old glue and dust, then apply some wood glue evenly on the back. Press it back into place and secure it with tape, clamps, or small nails for about 24 hours. Once it’s fully dry, you can fill any gaps with wood filler, sand it smooth, and touch up the paint.