How to Cut Grease Film off Painted and Wood Kitchen Cabinets

Why this matters

Kitchen cabinet fronts carry two soils at once: cooking grease that settles out of the air above and beside the range, and skin oil around every handle and the edge people push doors shut by. Together they make a tacky amber film that holds dust and darkens over months. It comes off easily with an alkaline degreaser. So does the finish, if the finish is a soft paint, a worn lacquer or an oil finish, and so does the door itself, if water gets into the raw edge of a painted MDF panel and swells it. The work is not hard; the order is. Test the finish first, start at the weakest chemistry that lifts the film, keep water off the edges, and stop the moment the finish tells you to.

Read the finish before you pick a bottle

You cannot see the finish from across the room, but you can narrow it down in a minute, and the answer sets how far up the chemistry you can go.

• Factory painted or lacquered (smooth, even sheen, often white or gray on MDF). Usually tolerates a mild degreaser. The risk is the edges: a hairline crack in paint at a door's profile lets water reach MDF, which swells and does not go back.
• Site-painted (brush marks, a slightly soft feel, sometimes sticky in humid weather). Latex enamel on cabinets can stay soft for a long time and dulls or softens under alkali. Treat it as the most sensitive painted case.
• Clear-coated wood (lacquer or polyurethane over stained wood, a film you can see sitting on top). Tolerates a mild degreaser if the coat is intact. Where it has worn through around handles, the wood under it is unprotected.
• Oil or wax finish (wood looks soaked rather than coated, low sheen, feels like wood). Alkaline degreaser strips oil finishes and lifts color. Mild dish soap at most, and often just a damp cloth.
• Thermofoil or laminate (vinyl or plastic skin, perfectly uniform, sometimes peeling at the edges). Tolerates a mild degreaser; keep heat and solvents away, and keep water out of any peeling edge.

Ask the client what they know: who painted them, when, and what they normally use. "We painted them ourselves last spring" is the single most useful sentence you can hear before this job.

Test on a hidden spot, and write it down

The shelf rule is that every new chemical gets a hidden spot first. On cabinets, test the outside face of a door somewhere nobody looks: the bottom rail of the sink base door near the floor, or the edge of a door that faces a wall. The inside face is not always a safe stand-in, because some factory cabinets finish the inside with a cheaper coating than the outside.

Run it as a ladder, weakest first, one minute of contact each, rinse-wiped and dried before you judge. Here is the log from a factory-painted white kitchen with a heavy film over the range.

HIDDEN-SPOT TEST - KITCHEN CABINETS
Spot: sink base door, bottom rail, outside
Finish: factory paint, satin (client confirms)
Product label range for degreaser: 1:32-1:10
-----------------------------------------------
# Product         Ratio  oz/gal Dwell Result
1 neutral clnr    1:64     2    1 min film stays
2 mild degreaser  1:32     4    1 min film lifts
3 mild degreaser  1:10    12.8  -     not run
-----------------------------------------------
After #2, dried 10 min: sheen matches,
  no tack under fingertip, nail leaves no mark
White cloth: grease only, no paint color
Use: #2, mild degreaser 1:32 (4 oz/gal)

What each line is checking. The ounces per gallon follow from 128 ounces in a gallon divided by the second number: 128 over 64 is 2, over 32 is 4, over 10 is 12.8 ('Dilution Ratios and Ounces per Gallon Card' owns this math). The ten-minute dry matters because paint that softened under alkali often looks fine wet and shows a dull or tacky patch only once it dries. The white cloth is the color-transfer check: white or pale paint on the cloth, or amber stain from wood, means the product is taking finish, not just grease.

Why stop at the first rung that works. Line 3 was never needed. Going stronger than the film requires only adds risk to the finish and leaves more residue to rinse. The label's weaker dilution is the starting point, not the bottom of an aim-high range.

The procedure

1. Set up for uppers and protect what is below. Use a step stool or a two-step ladder for upper doors, never the counter or a chair, because a slip off a countertop is the fall that hurts cleaners in kitchens. Splash goggles and chemical-resistant gloves go on before you mix, because wiping overhead puts drips at eye level; read the degreaser's SDS section 8. Lay a towel on the counter below the uppers you are working.

2. Mix at the tested dilution in a labeled bottle. Mix at the rung that passed, in a bottle labeled per 'Dilution Control and Labeling Standard'. Do not spray the cabinets: spray the cloth. Overspray runs into hinges and down into the door's top edge where you will not see it until it swells.

3. Damp, not wet, and work top down. Wring the cloth until it does not drip when squeezed. Start at the top of the uppers above the range, where the film is worst, and work down and outward, so anything that runs lands on surface you have not cleaned yet ('Top to Bottom, Dry to Wet: The Cleaning Sequence Rules' owns the order). Wipe with the grain on wood, in long strokes along the stile and rail, not in circles, which can leave swirls in a soft clear coat.

4. Give the film a short dwell, then lift it. Hold the damp cloth against heavy film for the dwell the label gives (or the minute that worked in your test), then wipe it off. Around handles, fold to a fresh face; that is where skin oil is thickest and where a loaded cloth just moves the film around.

5. Rinse-wipe every door you degreased. Follow immediately with a second cloth dampened in clean water. Why: degreaser left on the surface dries to a residue that feels tacky and attracts dust faster than the original film. Skip it and the cabinets look clean today and dull within the month.

6. Dry the edges and the hinge side, every door. Open each door and run a dry cloth along the top edge, the hinge side and the hinge cups, and along the bottom edge. Why: water that sits in a profile or a hinge bore reaches raw wood or MDF. The face can take a damp wipe; the edges are where swelling and lifted paint start.

7. Stop rules, applied every door, not just the test spot. Stop at once on any door where the finish feels tacky or soft under your glove, the sheen changes, or color appears on the cloth. Rinse-wipe that area with clean water, dry it, and do not continue with that product. A finish that passed on the sink base can still fail above the range, where years of heat have worn it thin. Photograph the spot, tell the client before you leave, and drop to a neutral cleaner or a mild dish-soap solution on the remaining doors in that zone.

Worked case: the oak doors that failed at rung two

A different client, a 1990s oak kitchen. From across the room it looked like a clear coat; up close the wood around the pulls looked darker and felt like bare wood rather than a film. The client did not know the finish. Same ladder, on the outside face of the pantry door's bottom rail, at floor level:

• Rung 1, neutral cleaner at 1:64 (2 ounces per gallon), one minute: most of the film lifted. White cloth showed only gray grease.
• Rung 2, mild degreaser at 1:32 (4 ounces per gallon), one minute: the film lifted completely, and the white cloth came back with a faint amber tint.

Amber on the cloth is stain or oil finish coming off. Rung 2 failed by the stop rule, even though the surface looked better. The job ran at rung 1 instead, with an extra pass on the doors beside the range and a rinse-wipe and dry after each.

What went in the file:

Cabinets: oak, likely oil/worn finish near pulls.
Degreaser 1:32 lifted color (amber on cloth)
  at test spot; NOT used.
Cleaned w/ neutral 1:64, 2 passes by range.
Worn areas around pulls look dry; suggested
  client ask a wood refinisher about recoating.

Why rung 1 was the right call even though it left a faint shadow by the range. The remaining shadow is grease in worn, open-grained wood, and the only thing strong enough to pull it out is strong enough to pull stain too. A faint shadow the client can live with beats a pale blotch they cannot. And the note routes the real fix, a recoat, to the trade that owns it rather than leaving it implied that cleaning should have done it.

What would change the call. A thermofoil door that is peeling at the edge gets the face cleaned with the edge kept dry, because water under the vinyl skin loosens it further. A site-painted kitchen less than a few weeks old, or any paint the client says is new, gets a damp microfiber and a neutral cleaner only until the paint maker's cure time has passed. And cabinets with heavy film you cannot shift at rung 1 on a finish that will not tolerate rung 2 go back to the office as a scope note, not a harder scrub.

How you know it is done

Run a clean, dry fingertip (gloved) across a door above the range and one beside the fridge: neither should drag or feel tacky. Look along the doors at a low angle toward the window: the sheen is even, with no dull wipe marks, swirls or tide lines. Open three doors at random and check the top edge and the hinge side are dry. Every door looks the same color as it did, just clean. If any door shows a dull patch, a tacky spot or paint on the cloth, it is already in the notes with a photo.

References

• Degreaser and neutral-cleaner labels and SDS (dilution range, dwell, PPE)
• See related: Dilution Ratios and Ounces per Gallon Card
• See related: Dilution Control and Labeling Standard
• See related: Top to Bottom, Dry to Wet: The Cleaning Sequence Rules
• See related: How to Spot Clean Painted Walls Without Burnishing the Finish