How to epoxy a table top, step by step

What you’ll need

• Tabletop (coating) epoxy — not deep-pour resin, which is made for thick castings and runs off a flat top for days. See deep pour vs tabletop epoxy.
• Graduated mixing buckets and flat stir sticks; a second clean bucket for the two-bucket method.
• A notched or flat plastic spreader, a foam brush for the edges, and a heat gun or small torch for bubbles.
• Painter’s tape, plastic sheeting for the floor, and cups or blocks to raise the table top so drips fall clear.
• Nitrile gloves, eye protection, and a way to ventilate the room.
• A random orbital sander with 120–220 grit, and a level.

1. Work out how much epoxy to buy

Measure the top and multiply length × width for the area (for a round top, π × radius²). At the standard 1/8 in flood coat a gallon covers about 12.8 sq ft, and a seal coat ≈ 1–2 fl oz per sq ft (0.3–0.6 L/m²), more on spalted or end grain — the epoxy coverage chart has every thickness. Then allow for what runs off the edges — roughly 1.25 fl oz per foot of edge for each 1/8 in coat — plus a thin film left on the sides and about 5% for the bucket; the calculator does this for you. Some common sizes, already worked out:

• How much epoxy for a 4x8 table top — 32 sq ft, the size of a full sheet of plywood.
• How much epoxy to flood coat a 6 ft dining table — a 72 × 36 in top.
• How much epoxy for a 48 inch round table — a four-seat kitchen table.
• How much epoxy to flood coat a coffee table — 48 × 24 in, a good first project.

Round the result up to whole kits and don’t cut it fine. Running short halfway across a table leaves a line you will be sanding out later; a quart left over is cheap by comparison.

2. Prepare the wood

Epoxy shows every flaw underneath it, so the surface needs to be flat, dry and clean. Sand to about 120–180 grit — much finer and the seal coat has less to grip. Fill large cracks and knots first (a thicker epoxy or a separate small pour works). Vacuum, then wipe with a lint-free cloth; skip oily wood cleaners, which can stop the epoxy from bonding. If the top already has a finish, it needs to be fully cured and scuff-sanded, and some finishes (oils and waxes especially) won’t take epoxy at all — test a small area.

3. Set up a level, dust-free space

Epoxy finds the low corner and pools there. Level the top in both directions with a level, shimming the supports rather than trusting the floor. Raise it on cups or blocks so the edges overhang and drips fall to the plastic sheet below. Run painter’s tape along the underside of every edge: drips that cure under the lip are much harder to sand off than tape is to peel.

Temperature matters as much as level. Most coating epoxies want a room around 70–85°F (21–30°C), and ArtResin recommends keeping it steady for the first 24 hours — a room that cools overnight can leave dimples or a wavy surface. The wood should be at room temperature too. Sweep and let the dust settle a few hours before you pour.

4. Seal coat

Wood is full of air. When warm epoxy flows into the grain, that air comes out as bubbles — sometimes for hours, right through a flood coat. A seal coat stops it: mix a small batch, spread it thin with a brush or scrape it on with a spreader, and work it into end grain, knots and edges. It will look patchy; that is normal. Let it cure to the point your label allows a second coat — often a few hours. The seal coat for a 6 ft slab example shows how much this step takes on a thirsty slab.

5. Mix the flood coat

Measure the two parts exactly — by volume in graduated buckets, or by weight on a scale if your label gives a weight ratio (they are usually different: TotalBoat lists its 1:1-by-volume TableTop as 1.2:1 by weight). Stir slowly for the full time on the label, scraping the sides and bottom, then pour into a second bucket and stir again with a clean stick. Unmixed resin clinging to the first bucket is the most common cause of soft, sticky spots.

On a big top, working time is the limit, not volume. Mix batches you can spread before they start to thicken — often about a gallon at a time — and pour them back to back so the wet edges merge.

6. Pour, spread and let it level

1. Pour in a line or an S down the middle, not all in one puddle.
2. Spread toward the edges with the spreader, leaving it about 1/8 in thick; most tabletop epoxies self-level at about that thickness.
3. Let it flow over the edges, then smooth the drips up the sides with a gloved hand or foam brush.
4. Pass a heat gun or torch quickly over the surface to pop bubbles, keeping it moving. Come back every 10–15 minutes for the first part of the working time.
5. Check the underside edges for runs and wipe them before they gel.
6. Cover the top with a clean box or a sheet tented on sticks, without letting it touch the surface.

7. A second coat (optional)

For more depth, or to fill a surface full of embedded objects, pour a second flood coat rather than one thick one. Most tabletop epoxies are limited to about 1/8–1/4 in per coat — TotalBoat’s TableTop, for example, allows up to 1/4 in and a recoat after at least 3 hours. Inside the recoat window the next coat bonds without sanding; once the first coat is past it, scuff-sand the whole surface, clean off the dust and then pour.

8. Cure before you use it

Dry to the touch is not cured. Most tabletop epoxies are hard enough for light use after a few days and reach full cure in about a week — TotalBoat lists 3–5 days for light use and 5–7 days for full cure. Keep hot dishes, heavy objects and cleaning sprays off until then. A cold room stretches those times considerably; see how long epoxy takes to cure and the cure time calculator.

Common table-top problems