Surface-by-Surface Chemistry Card for Counters and Fixtures
Why this matters
The claim a residential cleaning shop dreads most is not a missed baseboard. It is "your cleaner ruined my counter": a dull ring on a marble vanity, a cloudy patch on a quartz island, a pitted chrome faucet, a scratched acrylic tub. Every one of those is a chemistry or abrasive the surface could not take, applied by a tech who did not know what the surface was. A house has a dozen different counter and fixture materials, and they do not all tolerate the same bottle. This card is the pocket answer: what each one tolerates and what dulls, etches or scratches it. Floors are on 'Hard Floor Care by Surface Type', and stone in depth is on 'Natural Stone and Delicate Surface Care'.
The card
Classes, not brands. Where this card and the surface maker's care sheet disagree, the maker's sheet governs, and every new product gets a hidden-spot test first.
COUNTERS AND FIXTURES: CLEANER CLASS CARD
N neutral A acid K alkaline B chlorine bleach
SURFACE TOLERATES DULLS, ETCHES, SCRATCHES
granite N A, strong K, abrasives
marble N any A, strong K, pads
eng. quartz N, mild K strong K, solvents, heat
laminate N, mild K abrasives, standing water
butcher block N soaking, strong K
stainless steel N, mild K B, steel wool, cross-grain
chrome N, mild A abrasive pads, long A or B
brushed nickel N A, abrasives (per maker)
acrylic N abrasives, solvents
fiberglass N, mild A abrasive powder, solvents
enamel cast iron N, mild A scouring, strong A over time
glass N, mild A abrasives on coated glass
Read "mild A" as a bathroom descaler at its label rate, applied, held for its dwell and rinsed off, not left to dry. Read "mild K" as an all-purpose or light degreaser at label rate, not a heavy-duty or oven cleaner.
The stones and stone-lookalikes
Granite is mostly hard silicate minerals and takes daily neutral cleaning well. The reason it is still "neutral only" is the sealer and the mix: many stones sold as granite contain calcite that an acid will etch, and strong alkalis break down the impregnating sealer, after which the stone stains. A granite counter that suddenly darkens when wet has lost its sealer; the water-drop test is in 'How to Water-Drop Test a Stone Countertop for Sealer'.
Marble, travertine, limestone and onyx are calcium carbonate. Any acid etches them, including vinegar, citrus, many bathroom cleaners and the fruit juice the customer spilled. Strong alkalis dull a polish too. Neutral cleaner, a soft cloth, nothing more. Unknown stone is treated as acid-sensitive and gets a neutral cleaner until someone who knows the stone says otherwise.
Engineered quartz is crushed quartz bound in resin. The resin is the weak point: makers commonly warn against high-pH products (oven and grill cleaners, strong degreasers), solvents such as paint stripper or nail polish remover, and direct heat from pans. Neutral daily, a mild alkaline cleaner for grease, and the maker's sheet for anything stronger.
Cultured marble (the one-piece vanity top with an integrated bowl) is resin and marble dust under a gelcoat. Treat it like acrylic: neutral, no abrasives. It is not on the card as its own row because it fails exactly like the acrylic row does.
How to tell them apart in thirty seconds. Granite shows interlocking colored crystals and is cold and hard. Marble shows soft veining, often white or gray, and a polish that already has dull rings near the faucet where something etched it. Quartz looks uniform, often with a repeating pattern and a faint resin sheen, and feels slightly less cold than stone. If the customer does not know and the tech cannot tell, it is unknown stone.
Wood, laminate and the metals
Laminate is a printed paper layer under a plastic wear surface on particleboard. Mild chemistry is fine; abrasives cut through the wear layer and water left standing at a seam swells the particleboard underneath. Wring cloths out and dry the seams.
Butcher block is oiled or finished wood. Oiled tops get a neutral cleaner or mild soap and a cloth that is damp, never wet; strong alkalis strip the oil and leave the wood dry and gray. Never soak or flood it. If the customer sanitizes it with a diluted product of their own, that is their routine, not a crew default.
Stainless steel resists most cleaners but not chlorides: chlorine bleach left on stainless can pit and stain it. Steel wool leaves carbon-steel particles that rust in the grain, and scrubbing across the grain leaves visible scratches. Method is in 'Stainless Steel Care'.
Chrome is a thin plating. A mild descaler held for its dwell and rinsed is the standard fix for water spots; leaving acid or bleach on it for long periods, or scrubbing with a scouring pad, wears through the plating and it pits. The full descaling method is in 'How to Descale a Glass Shower Door and Chrome Fixtures'.
Brushed nickel, oil-rubbed bronze, matte black and other "living" or coated finishes are where fixture makers are strictest. Many care sheets allow only water and mild soap, and forbid acid descalers and abrasives outright. When the finish is not polished chrome, the default is neutral and the maker's sheet before anything else.
The bath surfaces
Acrylic scratches easily and is softened or clouded by solvents (acetone, some adhesive removers). No abrasive powders, no green pads.
Fiberglass has a gelcoat surface that dulls under abrasive powder. Most makers allow a mild descaler for hard-water film. Soap scum method for both is in 'How to Remove Soap Scum from an Acrylic or Fiberglass Tub'.
Enameled cast iron has a glass-like porcelain surface. Modern enamel resists mild acids well, but repeated strong acid and scouring powders dull the gloss over years, and older tubs may carry enamel that is less acid resistant. Test a hidden spot at the apron or under the faucet.
Glass takes a mild acid well. The fork is coated glass: many newer shower doors carry a factory water-repellent coating, and abrasives (including some cream cleansers and non-scratch pads used hard) wear it off. If water beads on the glass when it is clean, assume a coating and use no abrasive. Some coating makers also rule out acid descalers, so the door maker's care sheet decides whether the descaler goes on coated glass.
Worked example: building the kit for a new client
A first visit to a four-bedroom house. The lead walks it with the new-client surface sheet (the visit procedure is in 'The New Client First Clean Surface Notes SOP') and records nine counter and fixture surfaces:
- Kitchen: engineered quartz counters
- Kitchen: stainless sink and appliance fronts
- Kitchen island: oiled butcher block
- Primary bath: marble vanity top
- Primary bath: chrome faucets
- Primary bath: glass shower door, water beads on it
- Primary bath: acrylic soaking tub
- Powder room: laminate vanity
- Powder room: brushed nickel faucet
Reading the card row by row:
- Neutral cleaner is tolerated by all nine. It is the default bottle for every surface in the house.
- Mild alkaline is tolerated by three: quartz, stainless and laminate. It goes in the kitchen caddy for grease on the quartz and appliance fronts.
- Mild acid is tolerated by two: the chrome and the glass. Both sit in the primary bath, and the chrome faucets sit on the marble vanity, which tolerates no acid at all.
- Bleach appears in no row's tolerated column, and two of the nine (stainless and chrome) list it as harmful. It stays off the cart.
- Abrasives: the glass beads water, so it is treated as coated and gets no abrasive; the acrylic tub gets none either.
The kit that comes out of it: a neutral cleaner for everything, a mild alkaline degreaser in the kitchen caddy only, a bathroom descaler used on the faucets, and on the coated shower glass only if the door maker's sheet allows it, white and non-scratch pads, no green pads. That is three chemistries for nine surfaces.
The one hazard the card surfaced: descaling chrome faucets that sit on marble. Acid running off the faucet base onto the vanity etches a ring. The lead's instruction for this house: neutral cleaner on the faucets on routine visits; when they need descaling, the descaler goes onto a cloth or pad, never sprayed, with a damp towel laid around the faucet base on the marble, then a thorough rinse with the towel still in place. That instruction goes in the client's surface notes so every future tech gets it.
What would change the answer. If the vanity were cultured marble rather than real marble, a mild acid would be within its maker's tolerance more often than not, but the default would still be neutral until the maker's care sheet was found. If the shower glass did not bead water, it would be treated as uncoated glass and a non-scratch pad would be allowed on stubborn film. If the powder-room faucet were polished chrome, it would join the acid row.
How to know the card is working
Two checks. First, no surface in the client notes lacks a class: a row that reads "counter: ?" is a claim waiting to happen. Second, after the first three visits, run a fingertip and a raking flashlight across the surfaces most at risk (marble near the faucet, acrylic tub floor, coated glass). Any new dull ring, haze or scratch pattern means a product or pad outside the card reached that surface, and the notes get corrected before the next visit.
References
- Surface manufacturers' care and maintenance sheets (quartz fabricators, fixture makers, tub makers); the maker's sheet governs over this card
- See related: Natural Stone and Delicate Surface Care; Stainless Steel Care; Hard Floor Care by Surface Type
- See related: The pH Scale for Cleaning Crews: Which Chemistry Lifts Which Soil; How to Water-Drop Test a Stone Countertop for Sealer
- See related: The New Client First Clean Surface Notes SOP