Cabinet doors, wood finishes and faucet and hardware finishes
Identify the door material and finish, read KCMA certification for what it tests, keep heat away from thermofoil and laminate doors, clean each finish the way its maker says, and do the same for the faucet.
Start here Essentials
For a first pass, this chapter asks you to know what your cabinet doors and faucet are made of and finished with, and to clean each the way its maker says. Nothing here is sanded, stripped or repainted.
- Identify the door material and finish. Look at a door's edge and back, and for a maker's label inside a door or drawer (what the doors are made of).
- Look for heat beside thermofoil or laminate doors. An oven, toaster or kettle next to them is the question to ask the maker about heat shields (heat, steam and humidity).
- Clean with a soft damp cloth and the maker's cleaner, then dry. A mild soap where the maker is unknown (painted, stained and clear finishes).
- Find the faucet's finish and save its care page. The maker's name or model number leads to it (faucet and hardware finishes).
Minimum time: about 30 minutes for one kitchen. Done when: the installed register names the door material, finish and faucet finish, with their cleaners.
What the doors are made of Understand
A kitchen cabinet is a box (the case) with doors and drawer fronts on it. The case carries the load; the doors and drawer fronts take the hands, the heat, the steam and the splashes, and they are what you clean. This chapter is about the doors and fronts, their finish, and the faucet and hardware that sit beside them.
Many doors and cases are built on composite wood: panels made of wood fibers or particles bonded with resin. MDF (medium-density fiberboard) is made of fine fibers and machines to a smooth face, which makes it common under paint and films. Particleboard is made of larger particles and is common in cases and under laminates. Both swell if water gets into them, which is why edges and the sink base matter. Physical principle
The door types
The Composite Panel Association, the trade group for these panels and their surfaces, defines the three applied surfaces. Wood doors, painted or stained, come from the cabinet makers' own guides.
| Door type | What it is | What to look for | Heat |
|---|---|---|---|
| Stained wood | Solid wood or wood veneer, colored with stain under a clear topcoat | Grain you can see and feel; on a frame-and-panel door, separate pieces at the corners | Keep appliance heat away, per Wolf |
| Painted wood or MDF | An opaque, heavily pigmented coat with a clear topcoat, over maple, oak, MDF or HDF, per Canyon Creek | Fine lines at the joints of a frame-and-panel door; oak grain texture can show through | Keep appliance heat away, per Wolf |
| Thermofoil | A PVC or PETG plastic film, heat-formed over MDF or particleboard in a vacuum or membrane press | A smooth, one-color face that wraps around the edge with no seam | The film is a thermoplastic: it softens when heated |
| Melamine (TFL) | Resin-soaked decor paper fused by heat and pressure straight onto particleboard or MDF | A separate strip (edgebanding) on the edges | No heat figure on the CPA's page; the edgebanding is a separate material |
| High-pressure laminate (HPL) | Layers of resin-soaked kraft paper and a decor sheet pressed into a thin sheet, glued to a core | A thin sheet with a visible line at the edge, or an edge strip | KraftMaid groups laminate doors with thermofoil as heat-sensitive |
Thermofoil, which the trade calls 3D laminate (3DL) or rigid thermoformable foil (RTF), is film 10 to 16 thousandths of an inch thick; it wraps edges without seams and resists chipping (CPA, 2D and 3D Laminates). Thermally fused laminate (TFL) is the panel the trade used to call melamine; the CPA describes it as very scratch and wear resistant, and says it needs a separate edge treatment (CPA, Thermally Fused Laminates). High-pressure laminate is pressed at over 1,000 pounds per square inch, and its resins are thermoset, which the CPA says makes its bonds irreversible (CPA, High Pressure Laminates). It is the same family as a plastic laminate counter (Countertops). Physical principle
How to tell what you have
The "what to look for" column is our summary of the CPA's and makers' descriptions, not a test any of them publishes. This manual's convention Use it as a first guess, then confirm. Three places to look:
- The edge. Open a door and look at its edge in good light. A plastic face that runs around the edge in one piece points to thermofoil; a thin strip glued along the edge points to melamine or laminate; wood grain on the edge points to wood.
- The back and the inside of the case. The back of a door and the inside of the case can be a different material from the front. Note both.
- A label. Look inside a door, on a drawer side and inside the sink base for a maker's label, a series or date, or a KCMA seal. Photograph and write down what you find. The maker's name is the way to its care guide and warranty. Check your own cabinets
If the cabinets came with the house and carry no label, write "unknown" for the maker and your best reading of the material, and treat the finish with the gentle default below until you know more. Write it all on the installed register.
Heat, steam and humidity
The plastic films and laminates on cabinet doors react to heat, and wood reacts to moisture. The two makers' care guides we read and one heat-shield page name the same risks.
Heat beside thermofoil and laminate doors
The CPA says both films used for thermofoil are thermoplastics, meaning they soften when heated (CPA, 2D and 3D Laminates). Physical principle That is the mechanism behind film lifting or discoloring beside an oven. Medallion's care guide says a self-cleaning oven's heat may discolor thermofoil, and tells owners to use heat shields or open the nearby doors and drawers fully during the cleaning cycle; it also says not to set hot pans on thermofoil (Medallion, Cabinetry Care Guide). KraftMaid sells clear acrylic heat shields, thin panels fitted beside or above an oven or range, and says thermofoil and laminate doors are especially sensitive to heat; it states that the shields are required for warranty coverage on its laminate-style doors (KraftMaid, Heat Shield). Product-specific
No maker page we read gives the temperature at which thermofoil fails, so this manual gives none. The practical check is to look at what sits next to these doors: a wall oven or range, a toaster or toaster oven under an upper cabinet, a coffee maker or kettle whose steam rises against a door, a dishwasher whose steam vents at the counter edge. Wolf's guide tells owners to aim small appliances' heat away from cabinets (Wolf, Classic Care and Maintenance Guide). If you find a heat source beside a film or laminate door, ask the cabinet maker whether it requires a heat shield, and whether its warranty depends on one. Ask the maker
Humidity and water
Wood moves with humidity. Medallion's guide puts the ideal indoor relative humidity for its cabinets at 40 to 50 percent, and says levels above 80 or below 20 percent are likely to cause problems; its table shows a 24-inch oak panel changing about three quarters of an inch in width between 20 and 70 percent humidity at 70 F. It also says not to hang damp towels on doors, and that trimming swollen doors voids its warranty. Product-specific Those figures are Medallion's for its own cabinets; the humidity range for wood floors, which is NWFA's, is in Wood floors. A leak in the sink base is a plumbing question, and water that has swollen a cabinet's panels is one for a plumber or a restoration professional, not a cleaning job.
Painted, stained and clear finishes
A cabinet's finish is the coating on the wood: stain or paint for color, and a clear topcoat over it for protection. What the topcoat is decides how it cleans and how it can be repaired.
Painted against stained
Canyon Creek's guide on what to expect from wood cabinets sets out the differences from a maker's side (Canyon Creek, Setting Expectations: Wood). Product-specific
- Joint lines. Wood movement makes fine fractures in the joint lines of a frame-and-panel door whatever the finish; they show more on paint, and the maker does not treat them as a defect. Wolf's guide says the same of hairline cracks, including through painted finishes.
- Light. All finishes change color with light. Painted finishes mellow over time, which the maker does not treat as a defect either.
- Matching. A factory-painted cabinet will not match an item painted later with another supplier's paint.
- Grain. Red oak's grain texture still shows through paint.
If you are choosing, those are the trade-offs to weigh. If you have painted doors with fine lines at the corners, the maker's guide likely describes them as normal; read yours before treating them as damage.
Clear finishes
The Forest Products Laboratory's Wood Handbook says interior finishes usually last for decades, because indoors there is no sun damage of the kind outdoor finishes get. It also says manufacturers do not share one set of definitions for clear finishes and stains, so a name on a can or a spec sheet is the maker's own (USDA Forest Products Laboratory, Wood Handbook, 2021). Physical principle Two kinds matter here:
- Film finishes (varnish, lacquer, polyurethane) form a layer on top of the wood. The handbook says they clean more easily and resist stains better than oils, and protect against scratches and dents, but they wear away with repeated cleaning or abrasion and can eventually crack, chip and peel.
- Penetrating finishes (oils, and wax over them) soak in. They show wear sooner and are easier to touch up.
Most factory cabinets carry a catalyzed film. Canyon Creek says its topcoat on both stained and painted doors is conversion varnish, a hard finish that cures by a chemical reaction set off by an acid catalyst. Bob Flexner, writing in Popular Woodworking, calls conversion varnish the most durable of the catalyzed finishes, and says catalyzed finishes are much harder to repair invisibly than lacquer or shellac (Popular Woodworking, Catalyzed Finishes). That is one practitioner's view, and it is the reason a scratch on a factory door is a question for the maker or a finisher rather than a can from the hardware store. Ask the maker Light also changes wood under any finish: the handbook says dark woods lighten and light woods darken indoors, and that a shadow line where something sat usually evens out within several months, though cherry takes much longer.
Cleaning by door type
Medallion's and Wolf's guides agree on the routine: a soft cloth dampened with water, or with a mild soap and warm water for grease, then a dry cloth. Wolf adds that a fresh cloth is better than a dishcloth, which carries detergent and grease. Both rule out abrasive cleaners and scouring pads, and Wolf asks owners to keep oven cleaner off wood finishes. Product-specific Where you do not know the maker, this manual's default is that same routine, which sits inside both guides: a soft damp cloth, mild soap only where there is grease, and a dry cloth after. This manual's convention Test anything stronger on the inside of a door first.
For thermofoil, Medallion names a cotton cloth or non-abrasive sponge with a mild dish soap, and says to keep ammonia, baking soda and any cleaner used with a brush off it. The makers differ on polishes, waxes and bleach; those differences are under Go deeper, and your own maker's guide decides. Day-to-day cleaning across every surface is in Cleaning by surface.
Painted cabinets in an older home
Paint made before 1978 may contain lead. EPA says homes built before 1978 are more likely to have lead-based paint, that sanding and cutting painted surfaces make hazardous lead dust and chips, and that even a small amount of that dust can poison a child (EPA, RRP Program: Consumers). Since April 22, 2010, firms paid to renovate, repair or paint in pre-1978 homes in a way that disturbs lead paint have to be EPA- or state-certified and use certified renovators (EPA, RRP Program Rules). EPA's page for homeowners says the rule generally does not apply to owners working on their own home, recommends a certified lead inspector or risk assessor to test before work, and says to assume lead-based paint when the home's age is unknown (EPA, Lead-Safe Renovations for DIYers). Ask a certified lead inspector
In a home built before 1978, or of unknown age, treat painted cabinets and woodwork as if the paint contains lead until a test says otherwise. Do not sand, scrape or strip them without lead-safe steps, and hire an EPA- or state-certified contractor for work you pay for. Stains, damage and older homes covers testing and what to ask before hiring.
This manual does not teach refinishing, repainting, stripping or sanding cabinets, and it does not choose a paint or color. Color, sheen and paint lines are in Learn Color Design, Choose paint colors and finishes. Whether old paint contains lead is settled by a certified inspector's or risk assessor's test, not by its look or the house's age alone. A finisher or the cabinet maker settles whether a factory finish can be repaired. Ask the authority
Lacquer against conversion varnish, for repairs
Flexner names three catalyzed finishes. Conversion varnish has no nitrocellulose and is the most durable. Post-catalyzed lacquer contains nitrocellulose, which makes it a little easier to repair but weaker against wear, water, heat, solvents, acids and alkalis. Pre-catalyzed lacquer is the least durable of the three, though he says it is still as durable as oil-based polyurethane. All three are harder to repair invisibly than plain lacquer, shellac or water-based finish. He adds that conversion varnish bonds poorly over other finishes and over itself, and that too thick a film can crack months later; one example he gives cracked and peeled where it was sprayed over old lacquer. For an owner, the point is that a factory topcoat often cannot simply be recoated with whatever is at hand. Ask the maker what its finish is and what it accepts. Flexner also notes that these finishes use amino resins that release formaldehyde while curing; no source we found measures what a cured cabinet finish gives off later.
Where the cabinet makers differ
| Question | Medallion (2014 guide) | Wolf (2025 guide) |
|---|---|---|
| Polish or oil on wood | Avoid self-polishing waxes | Not needed; furniture polish or lemon oil allowed on stained finishes if wiped clean |
| Bleach | A 10 percent bleach mix or a quat cleaner may disinfect most thermofoil, after a spot test | Rules out bleach and ammonia on its finishes |
| Ammonia | Keep it off thermofoil | Rules it out |
The two guides cover different products and neither is wrong about its own. Medallion's guide is dated 2014; we found no newer one. If your cabinets are neither brand, follow your own maker, and where you have no maker, the default above leaves polish, bleach and ammonia out.
What a KCMA seal tests, and the formaldehyde label
The Kitchen Cabinet Manufacturers Association (KCMA) runs a certification program for cabinets built to its standard, ANSI/KCMA A161.1. A cabinet line that passes may carry the KCMA seal. The seal tells you the line passed a set of laboratory tests; it does not tell you how many years the cabinets will last in your kitchen. The decoder for this and other labels is on the Labels and ratings decoder. Convention
What the tests cover
KCMA's one-page summary says certification loads the structure with up to 600 pounds, cycles drawers and doors 25,000 times under heavy loads, and exposes finishes to heat, cold and household substances that stain (KCMA, certification one-sheet). KCMA's page on certified cabinetry gives more detail: a spill test with vinegar, grape juice, coffee, alcohol and mustard, after which there should be no discoloration that does not polish away easily; and a humid hot-box test at 120 degrees for 24 hours, after which there should be no discoloration or blistering (KCMA, Why choose certified cabinetry). KCMA's certification page says the program runs 14 tests, that 40 to 50 percent of cabinets fail their first attempt, that certified cabinets exist at every price point, and that KCMA mediates warranty disputes for certified cabinets (KCMA, Certification).
Read that list for what it is. The spill test names five substances, not every cleaner; the hot box is humid heat, not an oven's radiant heat beside a thermofoil door; and none of it is a count of years. The standard itself is sold, not posted, so exposure times and the full substance list are not public. Product-specific
A KCMA seal says a cabinet line passed set tests on the day it was certified. It does not say the cabinets will last a set number of years, that every finish will survive every cleaner, or that a door is protected from an oven's heat. The maker's care guide and warranty say what is covered. Ask the maker
The TSCA Title VI label
Cabinet cases and many doors are made of composite wood bonded with resins that can release formaldehyde. Under the Formaldehyde Standards for Composite Wood Products Act of 2010, which became Title VI of the Toxic Substances Control Act (TSCA), EPA set emission limits for hardwood plywood, MDF and particleboard, and for household goods made with them, cabinets included. Since March 22, 2019, those products have had to be labeled "TSCA Title VI compliant" (EPA, Formaldehyde Emission Standards for Composite Wood Products). The limits, in parts per million in a chamber test, are 0.05 for hardwood plywood, 0.09 for particleboard, 0.11 for MDF and 0.13 for thin MDF (40 CFR 770.10).
The label says the composite wood met a federal emission limit in a test. It is not a health rating, and this manual makes no health claim from it. EPA's page on formaldehyde exposure says heat speeds the release and humidity may affect it, and suggests more ventilation after bringing new sources of formaldehyde into the home (EPA, Protect Against Exposures to Formaldehyde). Health questions go to EPA's pages and your clinician. Ask a clinician
KCMA test details and the severe-use tier
KCMA's page on certified cabinetry gives some of the loads: shelves and cabinet bottoms carry 15 pounds per square foot for seven days; a 3-pound steel ball is dropped 6 inches onto cabinet bottoms; drawers run 25,000 cycles holding 15 pounds per square foot; doors swing 25,000 times carrying 65 pounds. KCMA also runs a separate Severe Use Certification for high-turnover rental housing. HUD developed it in 1993; KCMA took it over, and its 2024 version is a performance standard (KCMA, Severe Use Certification). KCMA's Environmental Stewardship Program is a different thing again: it certifies manufacturers' practices, not cabinets, so its mark says nothing about a cabinet's tests.
In October 2026 EPA updated the test standards its composite wood rule refers to; the emission limits above did not change. We do not name a test edition here.
Faucet and hardware finishes
The faucet and the cabinet knobs and pulls sit beside the cabinets and get cleaned with them, and they raise the same question: what can I use on this? The answer is in the finish, and the finish is the maker's.
The finish types
Moen groups its faucet finishes by how they are made (Moen, Faucet Finish Care and Cleaning). Product-specific
- PVD (physical vapor deposition): a thin, hard metallic coating applied in a vacuum. Moen's brushed gold, brushed bronze and brushed nickel are PVD in its range.
- Electroplated: a metal layer such as chrome deposited by electric current. Moen lists chrome, brushed chrome and some brass finishes here.
- Powder coat: a baked-on powder paint, used for matte black and some bronze looks. Moen notes that a bronze-colored finish can be powder coat, not PVD, so the color does not tell you the type.
- Living finish: uncoated metal, such as unlacquered brass, that darkens where it is not touched and brightens where it is handled. California Faucets and Rohl both describe their living finishes this way (California Faucets, Finish Care; House of Rohl, Tuscan Brass).
Care the makers agree on
The three makers we read agree on a mild soap and water, a rinse, and a soft cloth to dry; and on keeping abrasive cleaners and scouring pads off. Moen says green scouring pads carry mineral particles that scratch, and to avoid lime scale removers. California Faucets and Rohl rule out ammonia; California Faucets adds bleach and asks owners to wipe the faucet dry after use and not leave water standing on it. Moen allows most household cleaners if they are rinsed off with water at once, and says not following its care instructions may void its warranty. Product-specific Where the maker is unknown, this manual's default is the common ground: mild soap and water, rinse, dry, no abrasives, and nothing else until you find the maker. This manual's convention
On vinegar, follow your maker: the three disagree, and the side-by-side is under Go deeper. A living finish also changes the warranty question. Rohl says its standard limited lifetime warranty does not apply to its living finishes, because they are meant to change. Product-specific
Finding the finish
Look for the maker's name on the faucet body, the handle or the escutcheon (the plate at the base), and for a model number on the box, the receipt or a tag under the sink. The maker's site then names the finish and its care page. Save that page and write the finish and its cleaner on the installed register. For cabinet knobs and pulls, we found no maker care page among our sources; follow the knob maker if you know it, and the gentle default if you do not. Replacing or repairing a faucet is plumbing, which this manual does not cover. Check your own faucet
The vinegar disagreement
| Maker | Vinegar | What it applies to |
|---|---|---|
| Moen | A 50/50 mix of vinegar and water for water spots, then rinse | Its finishes generally; it also allows the finest (0000) steel wool on its PVD finishes |
| House of Rohl | Mild soap and water, or 50/50 vinegar and water; do not soak in vinegar | Its living brass finishes |
| California Faucets | Do not use vinegar, abrasives, bleach or solvents | Its living finishes |
Rohl and California Faucets both write about uncoated living finishes and still disagree. The way through is the one this manual uses everywhere: your maker's page decides, and where you have none, leave vinegar out.
Living finishes over time
California Faucets suggests waxing its living finishes regularly with a wax it names and says its uncoated satin nickel may oxidize, which a mild metal polish restores. Rohl says the factory wax on its brass wears away with use. Moen suggests a non-abrasive car or furniture wax now and then on its matte finishes. These are maintenance choices for the look you want, not repairs, and each applies to its own maker's finish.
2. See it See it
Rosa Delgado is fictional, and every fact about her here is invented for this manual. She is 51 and uses she/her. Her house was built in 1938. Its original wood kitchen cabinets are painted, with many layers of paint, and she wants them a new color.
Known. The doors are painted wood, original to the house. The house was built before 1978, so EPA's pages say lead-based paint is more likely. In January her indoor humidity reads 22 percent (she measured it for her floors; Wood floors has the reading). That is below the 40 to 50 percent Medallion's guide calls ideal for its own cabinets, though above the 20 percent below which it expects problems. She has no maker's guide for cabinets this old.
Presumed. The paint contains lead until a test says otherwise. That presumption is EPA's advice for a home of this age, not a finding. It covers every layer, not only the top one.
Open, and who settles it. Whether the paint contains lead: a certified lead inspector or risk assessor, who tests it. How the doors are prepared for new paint: an RRP-certified contractor does any sanding, which is the route she chooses; she does not sand them herself. The new color and sheen: Rosa, using Learn Color Design's Choose paint colors and finishes. Her faucet is not part of this example.
Her installed register now reads: kitchen cabinets, painted wood, maker unknown, original 1938, lead presumed until tested; cleaning, a soft damp cloth and a mild soap where there is grease, then dry, under this manual's default; nothing sanded or scraped; contractor and test to come. The record does not say the paint is or is not lead; the test will.
Free pages that show the same steps:
- EPA, RRP Program: Consumers: what to ask a contractor before work in a pre-1978 home.
- CPA, 2D and 3D Laminates: what thermofoil is and why heat matters, with pictures of wrapped doors.
- KCMA, Why choose certified cabinetry: the tests behind the seal.
- Moen, Faucet Finish Care and Cleaning: one maker's care by finish type.
3. Practice Practice
Minimum: the door material, its finish, and the faucet finish, each with its cleaner, written on the installed register. Time: about 30 minutes. Materials: a flashlight, the cabinet and faucet paperwork if you have it, a phone to photograph labels, and the installed register.
- Read a door. Open one door near the sink and one near the stove. Look at the edge, the back and the inside of the case, and photograph any label.
- Name the material and finish. Use the door types table; write "unknown" for anything you cannot tell, and the maker if a label names it.
- Walk the heat sources. For each film or laminate door beside an oven, range, toaster, kettle or dishwasher, write the heat source and ask the maker about heat shields.
- Find the faucet's maker and finish. Save its care page and write the finish and cleaner.
- Write the cleaning routine. The maker's, or this manual's default where there is no maker, and add a monthly wipe of the doors near the stove and sink to the care schedule.
Read the warranty and the labels. If the cabinets are recent, find the maker's warranty and note what it says about heat shields, humidity and cleaners. Look for a KCMA seal and a TSCA Title VI label, and write what each says on the register's notes. Check the humidity. If you have a hygrometer, note the reading in winter and summer beside the maker's range.
4. Your home Your home
5. Check your work Check your work
Criteria
- Does the installed register name the door material and finish, with "unknown" where you could not tell?
- Is the maker named, or written as unknown with the default routine noted?
- Is every heat source beside a thermofoil or laminate door listed, with the maker's answer on heat shields or "asked, waiting"?
- Does the faucet have a named finish and a saved care page?
- In a pre-1978 or unknown-age home, are painted cabinets marked "lead presumed until tested", with nothing sanded or scraped?
Worked example
Rosa's register names the material (painted wood), the maker (unknown, original 1938), the cleaning routine (the default), and the lead status (presumed until tested), and it records that nothing has been sanded. It passes for the cabinets. It has no faucet line, so that criterion is still open for her. It does not say whether the paint contains lead, and it does not choose a color; those belong to the inspector and to Learn Color Design.
Common mistakes
- Calling every smooth white door "painted". A seamless plastic face around the edge is thermofoil, and it reacts to heat differently.
- Treating fine lines at painted door joints as damage. Two makers we read say they come from wood movement and are not a defect.
- Reading the KCMA seal as a life expectancy. It is a set of lab tests passed, not a number of years.
- Judging a faucet's finish by its color. A bronze look can be PVD or powder coat, and the care differs.
- Sanding old paint "just to rough it up". In a pre-1978 home that is the step the lead rules are about.
What is still unresolved
Whether old paint contains lead is settled by a certified inspector's test, and who may work on it by EPA's and your state's rules; Stains, damage and older homes has the steps. Color and sheen are in Learn Color Design, Choose paint colors and finishes. Whether a damaged factory finish can be repaired is the maker's or a finisher's call. How hot is too hot for thermofoil has no published figure that we found. Counters beside the cabinets are in Countertops.