Why is the veneer peeling off my furniture?

Veneer peels because the glue under it has let go. The usual causes are swings in humidity, moisture from a spill or a damp room, and heat from a radiator or a sunny window. Catch it early, keep the loose pieces and keep water away, and a small lift is often a simple fix.

What veneer is, and why it fails

Veneer is a thin layer of wood glued to a solid base material for decorative purposes.^[1] Older veneers were sawn by hand and are thicker than contemporary ones and often irregular, and they were often attached with hide or fish glues.^[1] Most furniture made from the mid-1900s on is held with modern glue instead.

The trouble is that the veneer and the base wood move differently. Veneered surfaces may split or buckle because the grain orientation of the veneer is different from that of the underlying wood.^[1] Fluctuating humidity levels can cause severe damage as the woods expand and contract along different planes.^[1] Each swing pulls a little at the glue line, and over years the edge or corner gives way first.

The common causes

Moisture. Water softens the glue in veneered pieces.^[2] A spill that sat, a wet cloth, a plant pot without a saucer or a damp room are all enough. The National Park Service says protein-based glues are water-soluble and therefore fail in high relative humidity.^[1] It warns that above 70% mold and insects may become problems, and that glue may weaken, finishes may bloom.^[1]

Dry air. The same source says that at the other extreme, very low relative humidity, the glue will dry and crack causing the joint to fail,^[1] and that below 30% the glue may desiccate, joints may loosen, and finishes will become brittle.^[1] Winter heating is the usual culprit.

Uneven heat and sun. The surface of a table leaf in the sun or near a radiator will become dryer than the surface underneath.^[1] A dresser top under a sunny window or a cabinet against a heating vent peels there first.

Age. Old hide glue simply tires. If a vintage piece is lifting in several places, the glue is likely at the end of its life, and moisture only sped it up.

What to do now

Start by working out where it begins. Edges and corners go first, and a lift on the side facing a window or radiator points straight at the cause. Press gently with a fingertip to learn how far the loose area runs and whether the veneer is cracked.

Save every chip and flake in an envelope. A repairer can often set the original pieces back, which matches the grain and color far better than any filler.

Keep water off the spot. Do not wipe it with a wet cloth or a water-based cleaner. The Oregon State circular's advice is "Keep excess moisture away from joints to prevent glue from softening."^[2] Its dent-lifting method with a damp cloth and an iron is for bare wood (not on veneer).^[2]

Then deal with the room. Move the piece away from heat sources and direct sun, and aim for 50% plus or minus 5% relative humidity, which is the National Park Service's ideal for wooden objects in most areas of the country.^[1] A small hygrometer from a hardware store shows what your room actually does through the year.

Regluing a small lift

A lifted edge no longer than a few inches, on a modern piece, is a reasonable job at home. Slip a thin film of wood glue under the lift with a thin blade or an old card, press it flat, and wipe any squeeze-out right away with a dry cloth. Cover it with wax paper, lay a flat board over it and clamp or weight it for the time on the glue label. Do not use so much glue that it bleeds across the finish.

If the veneer has bubbled and trapped air, do not slice it open to fix it unless you know the grain, because a cut that wanders is hard to hide. Our guide to fixing a scratch in wood furniture covers touching up the finish once the veneer is down.

Stop and call a pro if

• The piece is an antique or an heirloom. With strong modern glue, it is nearly impossible to separate these joints without causing damage to the wood surface,^[1] and old hide glue can be reglued reversibly only by someone who knows how.
• The lifted area is large, cracked or broken into pieces. That needs matching, clamping and a patient hand.
• There is marquetry, inlay or banding. Small pieces in a pattern are easy to scramble.
• The base is swollen, soft or crumbling. That is water damage under the veneer, and gluing over it will not hold.
• You see mold or a white bloom on the finish. The humidity has been too high for too long.
• A repair has already gone wrong. The National Park Service says poorly done repairs are another common cause of damage to wooden objects.^[1]

Getting help in Virginia

To plan a repair budget, read what wood furniture repair costs in Virginia, and for who does the work, see who repairs wood furniture. Once the veneer is down, protecting wood furniture from water rings and sun stops it happening again. You can also browse furniture repair answers or small repairs on Loclis.

When you are ready, describe the repair once and local furniture repairers can quote it.