The Problem
Veneered furniture that's seen moisture grows bubbles — spots where the thin face layer has let go of the substrate and lifted. The instinct on a flip project is to sand the surface flat, and that instinct ruins the piece: veneer is paper-thin, and sanding a raised bubble grinds through the face into the substrate before the bubble ever levels out.
The Technique
- With a utility knife, gently poke a small hole in the bubble. This is the escape route for the air trapped underneath — without it, ironing pushes the bubble around instead of down.
- Set a clothes iron on the bubble and press it down. The heat reactivates the original veneer glue beneath the face.
- Hold pressure as it cools so the veneer beds back into the softened glue instead of lifting again.
- Once it's down and cool, the surface can be sanded and finished like the rest of the piece.
Pro tip: Same-source bonus for furniture flippers: water rings and iron stains in bare wood respond to oxalic acid, and the cheap way to buy it is a canister of Bar Keepers Friend — used with a little water and fine steel wool, then neutralized with a baking-soda wash. It may take more than one pass.
Pro tip: Put a cloth between the iron and any finished surface you can't risk scorching, and start at a mid heat setting — old veneer glue reactivates well below an iron's top end.