Professional window & glass cleaning in Dortmund & Ruhrgebiet – for streak-free windows and a clear view
Clean windows let in more daylight and give your property a well-kept appearance. Over time, dust, pollen, limescale, insects and fine dust settle on glass surfaces. Our professional window and glass cleaning delivers streak-free results — gentle on materials, tailored to the glass type and frame system.
- Free consultation
- Streak-free glass cleaning with pure water technology
- Glass, frames and sills (depending on scope)
- Private and commercial customers
- Conservatories, glass façades, shop windows
- Transparent guide prices — no hidden costs
Streak-free results — the difference is instantly visible
See for yourself what professional glass cleaning with pure water technology can achieve.
Illustrative example
Illustrative example
Illustrative example
Illustrative example
Why do windows get dirty?
Windows are exposed to various environmental influences every day. Many people believe windows get dirty mainly from rain. In fact, visible deposits are caused by a combination of dust, pollen, air pollutants, insect residue and limescale. Rain often just makes these deposits visible.
Rain spreads existing dust and leaves mineral residue when it dries — which is why windows can look dirty despite the rain.
Large amounts of pollen settle in spring. Combined with moisture, this creates a sticky, yellowish film.
Fine dust, tyre wear, soot and industrial particles settle on windows, especially near busy roads.
Resin, leaves, needles, bird droppings, insect residue and cobwebs stick stubbornly to glass surfaces.
Clean windows significantly improve light penetration. Natural daylight contributes to a pleasant living and working atmosphere. Dirty glass surfaces look dark, uncared-for and dull.
- More daylight in living and working spaces
- A better view
- A well-kept appearance
- A more pleasant living and working feel
On request, our window cleaning also covers frames, sills, rebates, glass doors, conservatories, glass railings, glass roofs and shop windows. The scope is agreed transparently.
Have your windows cleaned professionally
Whether it's a house, office or shop window — we'll advise you for free and prepare an individual quote for your window and glass cleaning.
Request a free quote nowWhy every glass surface should be treated differently
Today's windows consist of far more than a simple pane of glass. Different glass types, coatings and frame systems require different cleaning methods. That's why every professional window cleaning starts with an assessment of the glass surface.
Glass types at a glance
Float glass
Smooth surface, highly transparent, versatile. Used in homes and offices.
Toughened safety glass
Heat-treated, high impact resistance. Used in glass doors, conservatories, glass railings.
Laminated safety glass
Multiple panes with a tear-resistant interlayer. Used in glass roofs, conservatories, shop windows.
Insulating glass
Double or triple glazing with a gas-filled cavity. Thermal and sound insulation.
Solar control glass
Special coatings reduce heat, glare and UV radiation.
Low-E thermal glass
Low-E coating reflects heat back into the room.
Self-cleaning glass
Photocatalytic coating helps break down organic soiling.
Patterned glass
Textured surface. Used in bathrooms, front doors, stairwells.
Window systems & special surfaces
uPVC windows
The most common in Germany. Low maintenance, durable, good thermal insulation. Gentle cleaning with suitable products — no abrasive products.
Timber windows
Need extra care. Painted or stained surfaces are sensitive to aggressive cleaners. Only suitable wood-care products are used.
Aluminium & timber-aluminium windows
Modern, sturdy, durable. No abrasive agents. Typical soiling: water stains, industrial particles, fine dust.
Roof windows
Often get dirty faster due to rain, leaves, pollen and bird droppings. Many can be tilted inward for cleaning — others need special safety measures.
Conservatories
Large glass surfaces with roof glazing. Typical: pollen, algae, bird droppings, limescale. Because of the roof surfaces, safe working practice is especially important.
Glass façades & shop windows
Office buildings with large glass façades need special access equipment. Shop windows are a business's calling card — many customers choose regular cleaning intervals.
Common mistakes when cleaning windows
Dust acts like sandpaper — without enough water, micro-scratches form on the glass surface.
Small sand particles in cloths can cause fine scratches. Only fresh, clean microfibre cloths should be used.
Not all glass tolerates aggressive chemicals or alcohol-based products — coatings can be damaged.
Unsuitable blades can permanently damage glass. Glass scrapers should only be used under suitable conditions and correctly.
In strong sunlight, water dries too quickly — resulting in streaks and marks.
More cleaner doesn't mean cleaner windows — excess residue causes streaks.
Why the right method is crucial
Not every window can be cleaned the same way. The right method depends on glass type, coating, height, accessibility, level of soiling and frame material. The goal is a streak-free result and long-term material protection.
Classic cleaning
Applicator & squeegee
The tried-and-tested standard for many windows. Washing the glass surface, loosening dirt, professionally squeegeeing, and finishing off the edges.
- Streak-free result
- High precision
- Ideal for homes
- Great for interior cleaning
Pure water technology
Pure water system
Water is purified of minerals and salts — it dries almost without residue. No limescale spots, no streaks, less chemical use. Especially suited for large exterior surfaces.
- No limescale spots
- No streaks
- Less chemical use
- Ground-based cleaning possible
- Glass façades & conservatories
Water-fed pole systems
Water-fed telescopic poles
Pure water is fed directly to a brush on a telescopic pole. Many glass surfaces can be cleaned from the ground this way — greater safety, wide reach.
- Greater working safety
- No ladder needed (depending on the property)
- Wide reach
- For multi-family buildings & façades
pure water system
Created by a pure water system — dissolved minerals are largely removed by a membrane. Normal tap water contains limescale, magnesium and calcium that leave marks once dry. Pure water system prevents this.
Professional microfibre systems
Professional microfibre cloths differ significantly from household products. They pick up dirt effectively, leave hardly any lint and are suitable for sensitive glass surfaces.
Glass scrapers & specialist methods
Glass scrapers for post-construction cleaning: paint splashes, cement residue, adhesive, silicone residue. Only used on suitable glass, a clean surface and a flawless blade — done properly and without scratches.
Which method suits which glass surface?
| Glass surface | Classic | Pure water | Water-fed pole | Notes |
|---|---|---|---|---|
| Home windows | Optional | Standard cleaning | ||
| Conservatory | Mind the roof surfaces | |||
| Glass façade | Partial | Large surfaces | ||
| Shop window | Optional | Optional | Frequent intervals | |
| Roof window | Partial | Harder access | ||
| Glass railing | Optional | Optional | Care with coatings |
How does professional window cleaning work?
High-quality window cleaning starts long before the actual cleaning of the glass panes. Every building has different window types and access conditions — that's why every clean is planned individually.
Inspection & analysis
Glass type, window size and height, accessibility, level of soiling, frame material, coatings, interior or exterior cleaning, conservatory or glass roof are assessed.
Preparing the work area
Protecting sensitive flooring, covering furniture (indoors), clearing window areas, securing walkways and cordoning off work areas.
Cleaning the frames
If agreed: uPVC frames gently, aluminium frames without abrasive agents, timber frames with suitable products that don't harm paint or stain.
Cleaning the glass surfaces
Depending on the property: classic cleaning, pure water technology, water-fed pole or microfibre systems. The method depends on glass type, height, accessibility and soiling.
Sills & rebates
On request: cleaning of sills, rebates and inner frame surfaces. Scope is agreed transparently in advance, as this takes considerably more effort.
Final check & quality control
A visual check for streaks, remaining dirt, drip marks, frames and overall impression. Cleaning is only considered complete after this quality check.
What does “streak-free window cleaning” actually mean?
Professional glass cleaning means more than just no visible streaks. A high-quality result includes:
- Clean glass surfaces
- Even shine
- No water runs
- Cleaned edges
- Clean frames (depending on scope)
Why do streaks form?
Streaks aren't unavoidable — they're caused by avoidable mistakes:
- •Too much cleaning agent
- •Dirty or old cloths
- •Hard tap water
- •Cleaning in direct sunlight
- •Incorrect drying technique
Professional tools and pure water largely avoid these problems.
Working safety per BG BAU
Window cleaning at height requires professional safety measures:
Environmentally friendly cleaning
As much cleaning power as needed — as little environmental impact as possible:
- Pure water is often sufficient without extra chemicals
- Cleaning agents used only when required by the soiling
- Resource-efficient water use
- Guided by German Environment Agency recommendations
Professional window cleaning with a system
Every building has different requirements. We plan every window cleaning individually and choose the right technique for the glass, frames and accessibility.
Request a free consultation nowWhat does professional window cleaning cost?
Costs depend on many factors — not just the number of windows. A serious quote takes the actual amount of work into account.
Guide price from 129 €
All prices include 19% VAT and travel within 25 km of Dortmund. Beyond that: €0.95 per one-way km beyond 25 km.
Private customers: approximately 20% of labour costs are tax-deductible (§35a EStG).
Non-binding guide price. Binding fixed price after inspection or photo check.
* Guide prices. Transparent guide prices after inspection — no hidden costs.
How often should windows be cleaned?
Professional or DIY?
| Aspect | DIY | Specialist company |
|---|---|---|
| Result | Often streaky | Streak-free |
| Technique | Tap water | Pure water |
| Safety | Ladder risk | Professional |
| High windows | Difficult | Possible |
| Time | High | Efficient |
| Limescale spots | Often remain | Removed effectively |
- Plannable appointments
- Consistently clean windows
- Less soiling over time
- Less organisational effort
Window cleaning in Dortmund & Ruhrgebiet
We clean windows for houses, flats, offices, practices, restaurants, hotels, schools, glass façades and shop windows in Dortmund and the Ruhr area.
Why customers choose us
- Free consultation — always no-obligation
- Modern pure water technology — streak-free
- Professional tools & glass cleaners
- Safe cleaning, even of hard-to-reach windows
- Glass type and frame material taken into account
- Transparent guide prices — no surprises
- Flexible appointments — also outside business hours
- BG BAU working safety standards
- Regional support in Dortmund & the Ruhr area
Frequently asked questions about window & glass cleaning
Answers to the most important questions — from costs and methods to conservatories and glass façades.
Everything from one provider
Many customers combine window cleaning with other exterior cleaning services — saving time and travel costs.
Professional window & glass cleaning for private and commercial clients
Whether it's a house, office, conservatory or shop window — we clean your glass surfaces thoroughly, gently, and with modern pure water technology. Streak-free results, transparent prices, flexible appointments.
- Free consultation — always no-obligation
- Pure water technology — streak-free, no limescale spots
- Glass, frames & sills (depending on scope)
- Service area: Dortmund & the Ruhr area
How much does cleaning your windows cost?
Have the condition checked beforehand — by photo or with a free on-site test service.