How to Finish Plywood Edges
To finish plywood edges, cover them with iron-on edge banding or a strip of solid wood, fill them with wood filler and sand them smooth for paint, or sand and round over the layers and leave them on show. Which method depends on the finish: wood veneer banding for stained or clear furniture, filler for painted work, and exposed layers on good Baltic birch. Outdoors, every edge must also be sealed against water. Finishing plywood edges takes minutes per shelf and makes the difference between homemade and handmade.
Six ways to finish plywood edges
| Method | Look | Best for | Effort |
|---|---|---|---|
| Iron-on veneer edge banding | Matches the face veneer | Shelves, cabinets, stained or clear finishes | Low |
| PVC or melamine banding | Solid colour | Melamine and painted cabinets | Low |
| Solid wood edging strip | Real wood, can be shaped | Tops, shelves that take knocks | Medium |
| Wood filler or joint compound | Invisible under paint | Painted furniture and built-ins | Medium |
| Sand and round over | Shows the layers | Baltic birch, modern furniture | Low |
| Mitred or covered edge | No edge visible | Boxes and cases with mitred corners | High |
Edge banding
Iron-on edge banding is a thin strip of veneer with hot-melt glue on the back. Iron it on with a household iron, press it with a block while it cools, then trim the overhang flush with an edge trimmer or a sharp chisel and sand the corners lightly. See what is edge banding for the types and the edge banding calculator for how much to buy.
Solid wood edging
Glue a strip of solid wood, 1/4–3/4 in (6–19 mm) thick and a little wider than the plywood, to the edge with wood glue and clamps or brad nails. When dry, plane or rout it flush with the faces. It survives knocks far better than banding, hides the edge completely and can be rounded or profiled. On a long shelf, a wider strip on the front also reduces sag.
Painting plywood edges: fill them first
- Sand the edge with 120 grit to remove splinters.
- Skim on wood filler, lightweight spackle or drywall joint compound with a putty knife, pressing it into the gaps between the layers.
- Let it dry, then sand with 180–220 grit. Repeat if the layers still show.
- Prime with a sanding primer and sand lightly, then paint. Painted plywood edges filled this way look like MDF.
Showing the layers
Good plywood, especially Baltic birch, has thin, even layers with no voids. Sand the edges up to 180–220 grit, round them over slightly with a router or sandpaper, and finish them with the faces. A clear finish makes the stripes stand out; a coat of finish sealed into the edge first stops it going darker than the faces.
Sealing plywood edges outdoors
Plywood takes in water through its edges first, and that is where it swells and delaminates. For outdoor projects, seal the edges with thinned epoxy or two coats of exterior primer until they stop soaking in, then paint all six sides. Use exterior or marine plywood: its glue is waterproof even if the edge gets wet.
Frequently asked questions
What is the best way to finish plywood edges?
For a wood look, iron-on veneer edge banding or a solid wood strip glued on. For paint, fill the edge with wood filler or joint compound, sand smooth and prime. For a modern look, sand the layers smooth and leave them visible.
What wood filler is best for plywood edges?
A water-based, sandable wood filler or a lightweight spackle for edges that will be painted; skim it on with a putty knife, let it dry, sand with 180–220 grit and prime. Drywall joint compound works too indoors.
How do you seal plywood edges for outdoor use?
Seal the end grain with thinned epoxy or an exterior primer until it stops soaking in, then paint every face and edge. Water gets into plywood through its edges first.
Can you round over plywood edges?
Yes, with a 1/8–1/4 in roundover bit or sandpaper. On Baltic birch the curved layers look good; on cheaper plywood a large roundover can show voids in the core.