The Problem with Tap Water
Every window cleaning company in Toronto has the same problem: the water.
Toronto's municipal water contains 100-130 mg/L of dissolved minerals — calcium, magnesium, iron, and other dissolved solids. When tap water dries on glass, the water evaporates. The minerals don't. They stay on the surface as white spots, streaks, and haze.
This is why most window cleanings look great for a week, then start looking dull. The mineral film attracts dust and pollen, accelerating the dirty cycle. It's not that the cleaning wore off — it's that the minerals never left.
How ClearCoat™ Works
Multi-Stage Filtration
Toronto tap water passes through sediment, carbon, and reverse osmosis filters. Dissolved minerals are removed at the molecular level.
Deionization Polish
Final polish through mixed-bed deionization resin. Output: 0 mg/L total dissolved solids. Purer than distilled water.
Fed-Pole Application
Purified water is pumped through water-fed telescopic poles directly to the glass. No buckets of standing water collecting debris.
Natural Air Dry
Because there are zero minerals in the water, it evaporates completely clean. No squeegee marks. No spots. No streaks. Just glass.
Tap Water vs ClearCoat™
❌ Tap Water (130 mg/L)
- Mineral spots within days
- Streaks visible in sunlight
- Attracts dust and pollen faster
- Results last 2-4 weeks
- Rain reactivates mineral film
- Chlorine degrades rubber seals
- Requires squeegee (leaves edge marks)
✅ ClearCoat™ (0 mg/L)
- Zero mineral deposits
- Crystal clear in all lighting
- Nothing for dirt to stick to
- Results last 8-12 weeks
- Rain rinses clean (soft water)
- Safe for seals and frames
- Air-dries perfectly (no squeegee needed)
The Rain Advantage
This is the part that surprises people most.
After a ClearCoat™ cleaning, rain actually makes your windows look better. Here's why: rainwater is naturally soft — very low in dissolved minerals. When it hits purified-water-cleaned glass, there's no mineral film to reactivate. The rain just sheets off clean glass.
After a tap water cleaning? Rain reactivates the mineral residue left on the glass. The spots and streaks you thought were gone come right back. That's not the rain's fault — it's the minerals that were never removed.
Cost Per Clean Day
ClearCoat™ costs more upfront than a tap water cleaning. But because results last 3x longer, the cost per clean day is actually lower.
| Metric | Tap Water ($150) | ClearCoat™ ($300) |
|---|---|---|
| Upfront cost | $150 | $300 |
| Results last | 2-4 weeks | 8-12 weeks |
| Cleanings per year | 12-24 | 4-6 |
| Annual cost | $1,800 – $3,600 | $1,200 – $1,800 |
| Cost per clean day | $5.36 – $10.71 | $3.57 – $5.36 |
| Annual savings | — | $600 – $1,800 |
Premium quality. Lower annual cost. ClearCoat™ isn't more expensive — it's more efficient.
Safe for Every Surface
ClearCoat™ purified water is safe for:
- All glass types: tempered, laminated, Low-E coated, insulated, single-pane
- Window frames: vinyl, aluminum, wood, fiberglass, clad
- Seals & gaskets: no chlorine to degrade rubber over time
- Screens: gentle enough for fiberglass and aluminum mesh
- Skylights & solar panels: zero mineral residue on specialty glass
GTA Water Hardness by Area
| Area | Water Hardness (mg/L) | Streak Risk |
|---|---|---|
| Toronto (City) | 124-130 | 🟡 High |
| Scarborough | 124-130 | 🟡 High |
| Mississauga (Peel) | 120-135 | 🟡 High |
| Markham (York) | 175-190 | 🔴 Very High |
| Vaughan (York) | 175-190 | 🔴 Very High |
| Richmond Hill (York) | 175-190 | 🔴 Very High |
| Oakville (Halton) | 140-160 | 🔴 Very High |
| Milton (Halton) | 210-280 | 🔴 Extreme |
FAQ
What is ClearCoat™?
MANTLE's purified water system. Multi-stage filtration reduces Toronto's 130 mg/L tap water to 0 mg/L — purer than distilled. Zero minerals = zero streaks.
Why does it last longer?
No mineral film on the glass means nothing for dust and pollen to stick to. Clean glass stays clean. Mineral-coated glass gets dirty fast.
What about rain?
Rain is naturally soft water. It rinses clean off ClearCoat™-cleaned glass. After tap water cleaning, rain reactivates mineral residue and brings back streaks.
Is it worth the higher cost?
Yes — because you need fewer cleanings per year, the annual cost is actually lower. See the comparison table above.
See the ClearCoat™ Difference
Free estimate. Streak-free guarantee. Results that last.
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