Water-repellent and water-attracting surfaces
Whether a surface attracts or repels water decides what soils it, how it soils, and whether the cleaner you apply ever touches it.
In detail
Surfaces divide by what they do to water. A hydrophilic surface — clean glass, bare ceramic, cotton — is wetted readily, so an aqueous cleaner spreads and reaches everything. A hydrophobic one — wax, a fluoropolymer coating, an oily film, a treated outdoor fabric — repels it, and water arriving on it beads and runs off carrying very little with it. Three consequences matter. Cleaning a hydrophobic surface with a water-based product achieves less than expected because the product is not in contact for most of the area, which is why a surfactant is needed even where there is no grease to emulsify: its job there is wetting rather than lifting. Hydrophobic surfaces attract oily soil preferentially, so what accumulates on them is greasy rather than particulate. And repellency is frequently a deliberate finish rather than a property of the material — a water-repellent treatment on outerwear, a sealer on stone, a coating on glass — which means aggressive cleaning removes the function along with the soil. That is why technical-fabric care guidance excludes fabric conditioner, and why the stone trade calls its sealers repellents rather than sealers.
Why
- Silicone residue is explained by Water-repellent and water-attracting surfaces
- Fungal spores is explained by Water-repellent and water-attracting surfaces
- Waterproof outerwear is explained by Water-repellent and water-attracting surfaces
- Furniture polish is explained by Water-repellent and water-attracting surfaces
Sources for this page
Sources
W. L. Gore & Associates (GORE-TEX brand) · Manufacturer documentation
Relied on for: That water-repellent performance on technical outerwear is a finish which cleaning products can impair, and that fabric conditioner is excluded. (states this directly)
Verification: a person has read the passage relied on.
Read on — The outerwear care instruction list, including the SHAKEDRY note, and — from Sprint 31 — all fourteen question headings. Supports the claim as stated. Turns a treatment specification into a maintenance one. The frequency answer is a refusal to schedule, which is itself the evidence for the condition-triggered pattern. The stain-remover entry is a substitution rather than a prohibition, and the ironing entry states a manufacturer instruction in the GINETEX two-dot vocabulary this register already models, which links a brand's own page to the care-symbol family.
Care & Cleaning of Natural Stone
Natural Stone Institute · Trade or professional body
Relied on for: That sealers are impregnators, repellent rather than a sealer, making stone more stain resistant and not stain-proof. (states this directly)
Verification: a person has read the passage relied on.
Read on — Sprint 29 read all nine sections. Earlier sprints had read three: the siliceous-versus-calcareous classification, cleaning products, and sealing. Supports a wider statement — our claim was widened. Three sections of nine had been read and the source treated as complete. The unread six carry the whole preventive programme - coasters, trivets, non-treated dry mopping, slip-resistant mats, worn vacuum wheels, blot-don't-wipe - none of which the register held. They also answer a priority-1 row reading 'no route answers this yet': the authority's position on etch marks is that they are not a cleaning problem and need professional re-polishing. Two oddities are worth the record: dry 0000 steel wool is permitted on water rings, and efflorescence is removed dry because water makes it worse.
Last reviewed by a person on .