Calculating glass cleaning: price per m² & sample calculation
Glass area, difficulty level, interval – how to calculate glass cleaning correctly. With formula and example.
Glass cleaning is one of the most profitable cleaning types – if calculated correctly. Many cleaning companies underestimate the effort for frames, difficulty level and height. Here's how to calculate glass cleaning: area, interval, price and sample calculation.
Recording the glass area correctly
Measure the glass area in m², not just the number of windows. Distinguish:
- Single-sided cleaning: interior only or exterior only
- Double-sided cleaning: interior + exterior (effort × 2)
- Frame cleaning: separate item or included
- Multi-pane windows: significantly more time
Considering the difficulty level
The price depends heavily on the difficulty level:
- Ground floor / easily accessible: standard performance value
- 1st–3rd floor with ladder: +20–30% effort
- Height work (from 4th floor): special equipment, +50–100%
- Hard to reach (overhangs): +30–50%
Intervals for glass cleaning
Typical intervals (day-based, not weekly):
- Monthly (30 days) – e.g. shop windows
- Quarterly (90 days) – standard for offices
- Semi-annual (180 days) – residential buildings
- Annual (365 days) – less frequented properties
Formula for glass cleaning
Monthly price = Monthly hours × Hourly rate
Performance values for glass cleaning
- Interior only: 30–50 m²/h
- Interior + exterior (ground floor): 15–25 m²/h
- Interior + exterior (with ladder): 10–18 m²/h
- Height work: 8–15 m²/h
Glass area: 200 m² (interior + exterior) · Performance value: 20 m²/h · Interval: 90 days · Hourly rate: 45 €/h
Monthly factor = 30 ÷ 90 = 0.33
Hours per cleaning = 200 ÷ 20 = 10 h
Monthly hours = 10 × 0.33 = 3.33 h
Monthly price = 3.33 × 45 € = 150.00 €/month
Price per cleaning = 10 × 45 € = 450.00 €
Quarterly price = 450.00 €
Frame cleaning and multi-pane windows
Frame cleaning is often forgotten. Calculate it separately or increase the performance value surcharge by 20–30%. For multi-pane windows, the effort can be twice as high.
- Glass area estimated by window count only – imprecise
- Single-sided instead of double-sided – effort underestimated
- Frame cleaning forgotten – not paid
- Height work not considered – special equipment costs extra
- Interval too long – glass gets dirty, customer dissatisfied
Calculating glass cleaning with LV CleanPro
LV CleanPro supports day-based intervals for glass cleaning. You enter glass area, performance value and interval – the software calculates monthly factor, hours and price automatically. The finished PDF quote is ready to send immediately.
Frequently asked questions
How do you calculate glass cleaning?
Record glass area in m², choose performance value (m²/h) by difficulty, set interval (e.g. 90 days), monthly factor = 30 ÷ interval, monthly hours × hourly rate = monthly price.
How much does glass cleaning cost per m²?
Typically 3–8 €/m² per cleaning (interior + exterior), depending on height, accessibility and interval. Height work is significantly more expensive.
What performance value for glass cleaning?
Interior only: 30–50 m²/h. Interior + exterior (ground floor): 15–25 m²/h. With ladder: 10–18 m²/h. Height work: 8–15 m²/h.
How often should glass be cleaned?
Shop windows: monthly. Office: quarterly (90 days). Residential: semi-annual. High-traffic areas: monthly to weekly.
How much does glass cleaning cost per hour?
The hourly rate for glass cleaning is typically 40–55 €/hour net. Height work and special equipment cost more.
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