Upholstery and Fabric Cleaning Technician cheat sheet

Burn test: cellulose (cotton/linen) burns fast with paper odor and gray ash; protein (wool/silk) burns slowly with burnt-hair odor and crushable black ash; synthetics melt and bead.

Natural fibers: cotton (cellulose, absorbent, weak when wet), linen (cellulose, strong, wrinkles), wool (protein, felts with heat/agitation), silk (protein, sensitive to water spotting and sunlight).

Manufactured fibers: rayon/viscose (regenerated cellulose, weak when wet), acetate (thermoplastic, dissolves in acetone), nylon (strong, heat-sensitive), polyester (oleophilic, heat-sensitive), acrylic (bulky, heat-sensitive).

Fiber identification decision: use care label first, then fiber test (burn or chemical solubility) only on a hidden seam allowance; never test on visible face fabric.

Weave types: plain (balanced), twill (diagonal, durable), satin (float yarns, snag-prone), pile (cut or loop, traps soil), jacquard (patterned).

Construction affects cleaning: loose weaves and long floats risk distortion and snagging; tight dense weaves resist soil penetration but slow drying.

Backing and cushion: foam degrades with solvent and heat; latex may swell with water; down/feather needs low-moisture cleaning and thorough drying.

Blends behave by dominant fiber; when uncertain, test the most sensitive component (e.g., wool in wool/polyester blend limits heat and agitation).

pH scale 0–14: acidic <7, neutral 7, alkaline >7. Wool and silk prefer pH 5.5–7; cotton and synthetics tolerate mild alkaline (7–10).

Surfactant types: anionic (good soil removal, avoid on wool/silk), nonionic (gentle, low-residue, safe on most fibers), cationic (antimicrobial, can yellow), amphoteric (mild, pH-adaptive).

Solvent classes: water-based (polar, removes sugars/salts), dry solvents (nonpolar, remove oils/grease); volatile dry solvent (VDS) for spot removal on water-sensitive fabrics.

Enzyme agents: protease (protein stains), amylase (starch), lipase (fats), cellulase (cellulose soil); use at manufacturer-recommended temperature and pH; never on wool/silk with protease.

Bleaching agents: oxygen bleach (sodium percarbonate, color-safe, mild alkaline) vs. reducing bleach (sodium bisulfite, for dye-based stains); test first; never mix with acids.

Acids: acetic acid (white vinegar) for alkaline stains and browning; oxalic acid for rust and tannin; citric acid for mineral scale; rinse thoroughly.

Solvent carriers and spotting agents: dry solvent, volatile dry solvent, and water-based spotting agents; match polarity to stain; always test in hidden area.

Drying and residue: over-wetting causes browning, shrinkage, and mildew; use controlled moisture, extraction, and air movement; residues attract soil (re-soiling).

Method selection: dry soil removal (vacuum) first; then dry-solvent or water-based cleaning based on fiber, dye stability, and soil type.

Hot water extraction (HWE): injects heated solution and extracts; effective for water-tolerant fabrics; risk of over-wetting, shrinkage, and browning on cellulosics.

Dry cleaning (solvent): uses perchloroethylene or alternative solvents; suitable for wool, silk, and water-sensitive fabrics; requires proper ventilation and solvent recovery.

Low-moisture methods: encapsulation (polymer crystallizes and traps soil), bonnet buffing, and dry foam; reduce drying time and water damage risk.

Spotting sequence: identify stain, test, apply agent from outside in, blot (never rub), rinse, and dry; use a spotting board with vacuum and air.

Drying: air movers and dehumidifiers; target <24 hours to prevent mildew; wool and thick cushions may need forced air and separation.

Equipment safety: check hoses, valves, and grounding; use GFCI; never operate solvent equipment near open flame; maintain MSDS/SDS access.

Pre-testing: pH test, colorfastness (wet white cloth), and fiber identification before any wet or solvent process.

Personal protective equipment (PPE): gloves, eye protection, respirator (for solvents), and protective clothing; follow SDS for each chemical.

Ventilation: solvent vapors are heavier than air; use local exhaust and never work in confined spaces without monitoring.

Inspection checklist: fiber content, construction, cushions, seams, zippers, prior stains, pet damage, and manufacturer care code (W, S, WS, X).

Care codes: W = water cleanable; S = solvent only; WS = water or solvent; X = vacuum only (no liquids).

Customer communication: document pre-existing damage with photos and signed waiver; explain expected outcomes and limitations.

Hazard communication: label secondary containers; keep SDS accessible; train on chemical hazards and emergency procedures.

Waste disposal: follow local regulations for solvent and wastewater; never pour solvents down drains.

Liability: test in inconspicuous area; if uncertain, do not proceed; refer to specialist.