Mr Hard Water
Hard water staining on glass is not soil — it is mineral bonded to, and often etched into, the surface. No cleaner removes it, which is why the usual approach of scrubbing harder with a stronger chemical achieves nothing except a scratched pane.
Removing it properly is a polishing operation, closer to panel work than to cleaning, and it is a service most cleaners can add to shower screens, windows and glass balustrades at good margin.
The range covers the Mr Hard Water variable speed polisher; a drill adaptor for the backing plate; the sealer applicator; and The Professional's Guide to Glass Polishing and Hard Water Stain Removal.
How to choose
Variable speed is the whole point. Glass polishing generates heat, and heat is what cracks a pane. Speed control is a safety feature before it is a finish feature.
Assess whether the glass is etched before you quote. Surface mineral deposit polishes off. Glass that has been etched by prolonged exposure may not come back fully. Say so before the job, not after.
Seal afterwards or it returns. Bare polished glass re-stains quickly in a shower. The sealer applicator exists because the sealing step is what makes the result last and the customer happy.
Read the guide before the first paid job. This is a technique-dependent service where the failure mode is permanent damage to a customer's glass. Practising on scrap first is cheaper than the alternative.
The drill adaptor is a starting point, not the tool. It suits occasional small work. Volume work wants the dedicated polisher with proper speed control.
Related: Floor Pads, Tile & Grout Cleaning and Safety & PPE.
