Marcus Reed, Interior SpecialistUpdated March 2026 · Chicago studio
Those pale rings after a driveway wash are mineral deposits, not soap. Tap water dries into calcium and magnesium that etch clear coat if left in the sun.
Rinse twice, dry once
Do a final flood rinse with the hose on open flow — sheeting water carries minerals off instead of beading them. Then dry within five minutes with a clean microfibre, one panel at a time.
Shade beats products
No rinse aid beats washing out of direct sun. Early morning or late afternoon gives you twice the working time before spots form.
When to use the tunnel
Our tunnels finish with filtered, spot-free water all day — the easiest fix in hard-water neighbourhoods and heatwaves alike.
Fighting hard water?
A Professional plan wash includes the filtered final rinse every time.
See wash plans