Professional window cleaning in French-speaking Switzerland: spotless surfaces without the effort

Perfectly clean windows transform a living or working space. They let in maximum natural light, offer an unobstructed view of the outside and contribute to an immediate sense of cleanliness and well-being. In French-speaking Switzerland, the marked seasonal variations, dust-laden foehn episodes, abundant spring pollen and urban pollution subject your glazing to constant assault. The result: dull, hazy windows marked by rain streaks and limescale deposits.

At SOS Nettoyage, we are the window cleaning specialist throughout French-speaking Switzerland. For many years, we have served private individuals, shops, businesses and property management firms, restoring their glazed surfaces to an impeccable shine. Our trained and experienced teams use state-of-the-art professional equipment and proven techniques to guarantee a streak-free result, regardless of the type of glazing or access conditions.

Whether you need the windows of your Lausanne apartment cleaned, the shop fronts of your Genève boutique, the bay windows of your Montreux villa or the glazed facades of your Fribourg offices, SOS Nettoyage offers a tailored solution. We provide a free, no-obligation quote: contact us now to discover the difference that truly professional window cleaning makes.

Window cleaning is far more than a matter of aesthetics. Dirty glazed surfaces reduce interior brightness, increasing your artificial lighting consumption and impacting your electricity bill. For shops, dirty windows project an image of neglect that can deter potential customers. For property owners, poorly maintained windows see their seals and frames deteriorate prematurely under the effect of acidic and corrosive deposits. Calling on SOS Nettoyage for regular window maintenance is an investment in the comfort, image and durability of your property.

Our window cleaning services

SOS Nettoyage covers all window cleaning needs, from individual homes to high-rise buildings. Here is a detailed overview of our services.

Residential window cleaning

Window cleaning for private individuals is our most requested service. Apartments, detached houses, villas, chalets, second homes: we work in all types of housing in French-speaking Switzerland. Our residential service includes cleaning of:

Standard windows with single, double or triple glazing
French doors and sliding glass doors
Panoramic bay windows in living rooms, lounges and bedrooms
Roof windows such as Velux or similar
Glazed balconies, loggias and covered terraces
Exterior mirrors and decorative glass features
Fanlights and fixed frames often forgotten during household cleaning

Private individuals often combine window cleaning with a deep clean of their apartment or house or a spring clean for a complete result. We also offer packages that include window cleaning in our regular domestic cleaning services.

Commercial window and shop front cleaning

The appearance of your shop front is your first selling point. A study by the Swiss Retail Research Institute shows that 68% of passers-by form a first impression of a shop in under 7 seconds, and window cleanliness plays a decisive role. SOS Nettoyage is the trusted partner of hundreds of shops across French-speaking Switzerland:

Shop and boutique windows: interior and exterior cleaning, including advertising films
Restaurant, cafe and bar fronts: removal of cooking grease and condensation
Glazed entrances of shopping centres and retail arcades
Interior glass partitions in open-plan offices and meeting rooms
Illuminated glass signs and lightboxes
Car and property showrooms: windows without the slightest fingerprint

We offer regular maintenance contracts tailored to your business: weekly, fortnightly or monthly, with preferential rates and automatic scheduling.

High-level window cleaning

Window cleaning at height requires specific expertise, specialised equipment and rigorous safety training. SOS Nettoyage has specialised and certified teams for work on:

Multi-storey residential buildings
Office blocks and administrative buildings
Full glazed facades (curtain walls) of modern buildings
Atriums, skylights and glass roofs of shopping centres and museums
Towers and high-rise buildings requiring descent systems

Our teams are trained in accordance with SUVA safety standards and hold all necessary certifications (IPAF for cherry pickers, work at height, first aid). Each high-level intervention is subject to a detailed safety plan approved before work begins.

Conservatory and winter garden cleaning

Conservatories and winter gardens are complex glazed structures combining vertical walls and a glass roof that is often difficult to access. The roof becomes dirty particularly quickly due to its horizontal exposure, which promotes the accumulation of dust, pollen, fallen leaves, moss and bird droppings. The result: a considerable loss of light that reduces the comfort of this living space.

SOS Nettoyage offers a complete conservatory clean:

Glass roof: interior and exterior cleaning with pure water via telescopic pole
Side walls: traditional cleaning with professional squeegee
Aluminium or PVC frames: dusting, cleaning and anti-moss treatment
Integrated gutters and channels: unblocking and cleaning
Integrated blinds: dusting and cleaning

Shop front and specialist commercial surface cleaning

Beyond standard shop fronts, SOS Nettoyage handles cleaning of specialist commercial and industrial glazed surfaces:

Cleanroom glass walls and laboratories
Refrigerated display cases in butchers, cheese shops and bakeries
Fire-rated glass partitions in buildings and public facilities
Glass balustrades on balconies, staircases and mezzanines
Automatic glass doors: cleaning and disinfection of contact surfaces
Glass lift cabins: complete streak-free cleaning

Professional window cleaning techniques

The choice of technique depends on the type of glazing, its accessibility, the nature of the soiling and the desired result. At SOS Nettoyage, we master all professional methods and select the most suitable for each situation.

The professional squeegee (traditional manual technique)

The professional squeegee remains the benchmark technique for cleaning accessible windows. It is a precision tool, far removed from the consumer squeegees sold in supermarkets. Our operatives use it following a rigorous protocol:

Wetting: application of a professional cleaning solution using a microfibre applicator. The solution loosens dirt, grease and deposits without attacking seals or frames
Targeted scraping: if necessary, removal of stubborn residue (paint, cement, stickers) using a razor blade scraper handled by an experienced technician to avoid any scratching
Squeegeeing: passing the squeegee in fluid, even and uninterrupted movements. The professional-grade rubber blade is changed regularly to ensure perfect contact with the glass
Edge wiping: cleaning of edges and corners with a microfibre cloth to remove residual drips
Final polish: inspection and removal of any residual marks with a finishing pass

This technique offers maximum control and is perfectly suited to interior cleaning of all windows as well as exterior cleaning of windows accessible from ground level or with a step ladder.

The telescopic pure water pole (reverse osmosis)

The telescopic pure water pole, also known as the WFP (Water Fed Pole) system, is the benchmark technique for cleaning windows at height without a cherry picker. It is one of the sector’s major innovations, and SOS Nettoyage uses it daily:

A carbon fibre telescopic pole (reaching up to 18 metres, or approximately 5 to 6 storeys) is fitted with a rotating brush at its tip
Reverse osmosis demineralised water is projected onto the window via the brush. This water, completely free of minerals (limescale, magnesium, iron), has a naturally superior cleaning power as it absorbs impurities through molecular attraction
The rotating brush dislodges dirt, while the pure water carries it away
No chemicals are needed: pure water is sufficient to dissolve and remove virtually all soiling
Drying occurs naturally, without leaving the slightest streak, since the water contains no mineral residue

The advantages of this technique are considerable: maximum safety (the operator stays on the ground), environmental friendliness (no chemicals, low water consumption), speed of intervention and flawless results even on the highest windows.

Cherry picker

For high-rise buildings or complex glazed facades where the telescopic pole is insufficient, SOS Nettoyage deploys cherry pickers:

Self-propelled scissor lifts: for moderate-height outdoor work (up to 15 metres), ideal for warehouses and shopping centres
Truck-mounted articulated lifts: to reach great heights (up to 30 metres and more) with an offset reach to navigate around obstacles
Suspended platforms (BMU): for high-rise building facades without ground-level access, fixed to the building roof
Abseil descent systems: for situations where no cherry picker can be used

Each cherry picker intervention is governed by a strict safety plan compliant with EN 280 standards and SUVA directives. Cherry picker use requires a municipal permit in most municipalities across French-speaking Switzerland, which we handle entirely.

The reverse osmosis system: how does it work?

The reverse osmosis system deserves a detailed explanation, as it is one of SOS Nettoyage’s major technological advantages:

Mains water passes through an activated carbon pre-filter that removes chlorine and coarse particles
It then passes through a reverse osmosis membrane whose microscopic pores (0.0001 micron) retain 99.9% of dissolved minerals: limescale, magnesium, iron, silica
The resulting water, with a purity measured at 0-5 ppm (parts per million) of dissolved solids, compared to 200-400 ppm for Swiss tap water, is stored in a tank on our vehicle
This ultra-pure water is fed to the brush via the telescopic pole

The result is spectacular: pure water acts as a genuine dirt magnet and, when drying, leaves absolutely no streaks. This is why windows cleaned by SOS Nettoyage stay clean longer than those cleaned with tap water.

What is included in our window cleaning service

A professional window clean by SOS Nettoyage goes beyond just the glass. Our comprehensive service is designed so that every element of your windows is restored to an impeccable appearance.

Interior and exterior glass

Complete cleaning of both sides of each window, including double or triple glazed units
Treatment of stubborn marks: encrusted limescale, dried bird droppings, pollution residue, acid rain streaks, mud splashes
Cleaning of fixed panes (non-opening frames) often inaccessible without professional equipment
Special stain removal if needed: adhesive, tape, paint or silicone residue

Window frames

White PVC frames: deep cleaning and anti-yellowing treatment to restore their original whiteness
Coloured PVC or woodgrain-effect frames: cleaning suited to the coating
Wooden frames: careful dusting and cleaning, respecting the varnish, stain or paint
Aluminium frames: cleaning, degreasing and polishing for a like-new appearance
Weatherseals: careful cleaning and visual inspection of their condition (we flag any defective seals)

Window sills

Interior sills: dusting, cleaning and complete wipe-down
Exterior sills: removal of dirt, moss, lichen and droppings. Thorough rinsing for a clean result
Drainage holes: checking proper water flow and unblocking if necessary

Blinds and shutters

Cleaning of blinds and shutters is included or offered as a supplement depending on the chosen package:

Venetian blinds (aluminium or wooden slats): dusting and individual cleaning of each slat
Fabric blinds (roller and awning): dusting and surface cleaning; an in-depth clean with stain-resistant treatment is available on request
Roller shutters: exterior cleaning of slats and housing, functional check
Hinged shutters in wood or aluminium: cleaning of both faces, cleaning of hinges and hardware
Pleated and screen blinds: delicate dusting suited to the fabric

Additional elements

Fly screens: removal, soapy water cleaning, drying and refitting
Solar or decorative films: adapted cleaning to avoid peeling or damaging the film
Glass balustrades on balconies and terraces: interior and exterior cleaning
Glass canopies and awnings: cleaning of the glazed surface and structures

Recommended frequency for window cleaning

The ideal frequency of window cleaning depends on your environment, the exposure of your glazing and your cleanliness standards. Here are our detailed recommendations, shaped by years of experience in French-speaking Switzerland.

For private individuals: 2 to 4 times per year

Minimum twice a year: a clean in spring (March-April) and one in autumn (September-October). This is the bare minimum for acceptable windows. The spring clean removes winter residue (rain, pollution, road salt) while the autumn clean prepares your windows for winter
Ideally 4 times a year (one clean per season): this is the frequency recommended by SOS Nettoyage for consistently spotless windows. In summer, pollen, dust and insects quickly soil them. In winter, condensation and pollution darken them
Monthly: for homes by a main road, near a building site, in a polluted urban area or if you have high cleanliness standards
After any soiling event: nearby construction work, dust storm, foehn episode, splashes during facade cleaning work

For shops: weekly to monthly

Shop fronts are your business card. Regular cleaning is essential to project a professional image:

Weekly: recommended for city-centre shops, restaurants, bakeries, luxury boutiques, estate agents, banks and pharmacies
Fortnightly: suitable for shops in less busy areas, medical practices and hair salons
Monthly: the absolute minimum for any business wishing to maintain a professional image

For offices and buildings: monthly to quarterly

Monthly: recommended for upmarket buildings, headquarters and buildings with large glazed facades
Quarterly: standard frequency for office buildings and administrative buildings
Bi-annual: the absolute minimum, often insufficient to maintain a good image

Maintenance contracts: the most cost-effective solution

SOS Nettoyage offers regular maintenance contracts that provide:

Preferential rates of up to 20% discount compared to one-off interventions
Automatic scheduling: no need to think about it, we come according to the agreed calendar
Priority service in case of urgent need between two scheduled interventions
Continuity guarantee with the same teams, who know your premises and requirements

Window cleaning prices in Switzerland

Price transparency is a core value at SOS Nettoyage. Here are our indicative price grids for window cleaning in French-speaking Switzerland. Final prices depend on several factors (accessibility, window condition, location) and are always confirmed by a free, no-obligation quote.

Per m² pricing

Service type	Indicative price per m²
Standard accessible windows (interior + exterior)	5 – 8 CHF / m²
Windows at height (telescopic pole)	7 – 10 CHF / m²
Windows at height (cherry picker)	10 – 15 CHF / m²
Conservatories (glass roof + walls)	8 – 12 CHF / m²
Venetian blinds	3 – 5 CHF / m²
Great height (above 18 m)	+ 50% surcharge

Residential packages (house / apartment)

Property type	Indicative package
Studio / 1-2 rooms (4-6 windows)	100 – 180 CHF
3-4 rooms (6-10 windows)	150 – 280 CHF
5+ rooms / villa (10-20 windows)	250 – 400 CHF
House with conservatory	300 – 500 CHF
Luxury villa / chalet (20+ windows)	400 – 700 CHF

Commercial packages (offices / shops)

Premises type	Indicative package
Small shop (1-2 windows)	80 – 150 CHF
Medium shop (3-5 windows)	150 – 300 CHF
Restaurant / large shop	200 – 400 CHF
Open-plan office (glass partitions included)	300 – 600 CHF
Office building (complete glazed facade)	500 – 800 CHF
Great height / cherry picker	+ 50% surcharge

What affects the price

Prices vary according to several parameters:

Accessibility of the windows: ground floor, upper floor, need for cherry picker or scaffolding
Number and surface area of windows to clean
Initial condition of the windows: a first clean after several years without maintenance requires more time and effort than regular upkeep
Services included: glass only, or with frames, sills, blinds and shutters
Location in French-speaking Switzerland (variable travel costs)
Frequency: regular maintenance contracts benefit from reduced rates

All these prices include interior and exterior window cleaning as well as frame and sill cleaning. Prices are given as guidelines and may vary depending on your specific situation.

Request your free, no-obligation quote from SOS Nettoyage for the exact price suited to your needs.

Safety and insurance: our absolute priority

Window cleaning, particularly at height, involves specific risks that fully justify calling on a professional. At SOS Nettoyage, the safety of our teams and the protection of your property are our absolute priority.

Window cleaning risks

Risk of falling from height: every year in Switzerland, SUVA records thousands of accidents related to falls during work at height. Window cleaning on upper floors, from an unstable step ladder or from a balcony is one of the frequent causes of serious domestic accidents
Risk of glass breakage: improper handling, an inappropriate tool or thermal shock can cause glazing to break, with a replacement cost of several hundred to several thousand francs
Risk of frame and seal damage: harsh chemicals or a high-pressure cleaner can irreversibly deteriorate seals, wooden frames or surface coatings
Risk to the facade: drips of unsuitable product can stain or damage render, natural stone or facade cladding

Team training and certification

All SOS Nettoyage operatives specialising in window cleaning receive:

Work at height training in accordance with SUVA (Swiss National Accident Insurance Fund) directives
IPAF certification (International Powered Access Federation) for operating cherry pickers
First aid training and emergency evacuation procedures
Ongoing training in new techniques and equipment
Specific awareness of electrical risks (overhead lines, facade cabling)

Safety equipment compliant with Swiss standards

Safety harness with lifeline and energy absorber for all work above 2 metres
Protective helmets with chin strap for cherry picker and facade work
Non-slip safety footwear (S3 standard) suited to wet surfaces
Cherry pickers compliant with EN 280 standards, regularly inspected and certified
Lightweight carbon telescopic poles reducing musculoskeletal risks
Ground-level safety barriers to protect passers-by during high-level work

Professional liability insurance

Every SOS Nettoyage intervention is covered by our professional liability insurance. This insurance covers:

Accidental glass breakage (full replacement)
Damage to frames, blinds, shutters or the facade
Interior damage to the building (furniture, floors, curtains) in case of incident
Third-party liability (passers-by, neighbours)

You enjoy complete peace of mind: in the event of damage, we handle repairs without discussion.

Weather conditions: we adapt our interventions

For safety and quality reasons, we postpone interventions in case of:

Strong wind (above 50 km/h for cherry picker work, 35 km/h for telescopic poles)
Heavy rain (result compromised for interior cleaning; exterior cleaning with pure water remains possible in light rain)
Frost (risk of falls and glass breakage from thermal shock)
Thunderstorms (lightning risk for work at height)

In case of postponement, we reschedule the intervention as soon as possible, at no extra charge.

Why professional window cleaning is superior to DIY

Many people attempt to clean their windows themselves and end up with disappointing results: streaks, haze, lines, lint. Here is why professional cleaning by SOS Nettoyage makes all the difference.

Hard water: enemy number one

Swiss tap water is naturally rich in limescale. Depending on the region, water hardness varies from 20 to 40 French degrees (dF). In Lausanne, it is around 25 dF; in Genève, around 18 dF; in Valais, it can exceed 35 dF. It is this dissolved limescale that, when drying, leaves the famous white marks on your windows. Whatever the quality of your technique, if you use tap water, you will have streaks.

Our reverse osmosis demineralised water system removes 99.9% of dissolved minerals, producing water of near-absolute purity (0-5 ppm). This water dries without leaving the slightest mark.

Superior-quality professional tools

The professional squeegee used by our operatives costs between 40 and 80 CHF each, compared to 5 to 15 CHF for a supermarket squeegee. The difference? A surgical-grade rubber blade that is perfectly straight, an ergonomic stainless steel handle and a fixing system that guarantees even contact across the full width of the glass. Add professional microfibre applicators, lint-free cloths and precision scrapers, and you will understand why the result bears no comparison with a DIY clean.

A technique that must be learned

Window cleaning is a genuine trade. The pressure applied to the squeegee, the angle of attack, the speed of movement, the amount of solution applied, managing edges and corners: every parameter influences the final result. Our operatives master these techniques through thorough initial training and daily practice that make the difference.

Access to impossible areas

High windows, Velux skylights, conservatory roofs, fixed bay windows, glazed facades: so many surfaces that you cannot clean yourself safely. SOS Nettoyage reaches all windows, regardless of their position, thanks to its telescopic poles, cherry pickers and expertise in work at height.

Window cleaning and sustainability

SOS Nettoyage’s approach to window cleaning is firmly environmentally responsible:

Chemical-free pure water: our reverse osmosis system works without any detergent for exterior cleaning. No harmful substances flow to the ground or stormwater drains
Certified eco-friendly products for interior cleaning: biodegradable, non-toxic, VOC-free (volatile organic compounds)
70% reduction in water consumption compared to traditional bucket cleaning. Our system uses approximately 2 litres of water per standard window, compared to 7 to 10 litres with the bucket method
Durable equipment: our carbon poles have a lifespan exceeding 10 years, our squeegees are repairable and our microfibre cloths are washed and reused hundreds of times
Optimised vehicles: our rounds are planned to minimise kilometres travelled and the carbon footprint of our journeys

By choosing SOS Nettoyage, you opt for window cleaning that is both high-performing and responsible.

Special cases and bespoke services

Window cleaning after construction or renovation work

Construction and renovation work often leaves particularly stubborn residue on windows: cement splashes, silicone residue, paint spatters, plaster dust, protective tape marks. SOS Nettoyage has specific products and tools to remove these residues without scratching the glass. This post-construction clean is often combined with our post-construction cleaning service for a complete building restoration.

Hydrophobic treatment (lotus effect)

To extend the cleanliness of your windows between cleans, we offer the application of a hydrophobic treatment (known as “lotus effect”). This nanotechnology treatment creates an invisible layer that:

Repels water and dirt: raindrops slide off, carrying dust with them
Facilitates future cleaning: dirt adheres less to treated glass
Extends cleanliness duration by 2 to 3 times compared to untreated glass
Lasts between 6 and 12 months depending on weather exposure and abrasion rate

The hydrophobic treatment is particularly recommended for exposed bay windows, conservatories, glass balustrades and shop windows.

Window cleaning for property inspections (end of lease)

In Switzerland, the exit inventory requires spotless windows. Dirty glass or grimy frames can result in a deduction from your rental deposit. SOS Nettoyage offers a complete window clean (glass, frames, sills, blinds, shutters) perfectly suited to the requirements of property management firms across French-speaking Switzerland. This service is often combined with our end-of-lease cleaning for a complete handover of the property.

Solar panel cleaning

Photovoltaic and thermal solar panels lose up to 25% of their output when dirty. Our reverse osmosis pure water equipment is ideal for cleaning these fragile surfaces. Discover our dedicated solar panel cleaning service for more information.

Service areas in French-speaking Switzerland

SOS Nettoyage provides professional window cleaning across 6 cantons of French-speaking Switzerland. Our teams are strategically based to guarantee maximum responsiveness and limited travel costs.

Canton de Genève

Genève, Carouge, Lancy, Meyrin, Vernier, Onex, Thônex, Grand-Saconnex, Plan-les-Ouates, Bernex and all Genève municipalities. Residential, commercial and industrial window cleaning, including international organisations and major hotels.

Canton de Vaud

Lausanne, Montreux, Vevey, Nyon, Morges, Yverdon-les-Bains, Renens, Pully, Lutry, Aigle, Bex, Villeneuve, La Tour-de-Peilz, Rolle, Gland, Prangins and the entire canton. From the Vaud Riviera to the Chablais, through the Gros-de-Vaud and the Broye.

Canton du Valais

Sion, Sierre, Martigny, Monthey, Visp (Viège), Brig (Brigue), Naters, Conthey, Fully, Saxon, Verbier, Crans-Montana and all of French-speaking Valais. Interventions in the valley and at altitude, including tourist resorts and mountain chalets.

Canton de Neuchâtel

Neuchâtel, La Chaux-de-Fonds, Le Locle, Boudry, Peseux, Cortaillod, Colombier and all Neuchâtel municipalities. Window cleaning adapted to the watchmaking and industrial heritage of the canton.

Canton de Fribourg

Fribourg, Bulle, Morat (Murten), Romont, Estavayer-le-Lac, Châtel-Saint-Denis, Villars-sur-Glâne, Givisiez, Granges-Paccot and the entire canton. Bilingual interventions (French/German) available.

Canton du Jura

Delémont, Porrentruy, Saignelégier, Bassecourt, Courfaivre, Courrendlin, Courtételle and all Jura municipalities. Residential and commercial window cleaning throughout the Jura.

For large glazed surfaces or large-scale projects, we also operate in the Bernese Jura (Bienne, Saint-Imier, Moutier) and occasionally beyond French-speaking Switzerland. Contact us to find out more.

Practical tips for keeping your windows cleaner longer

In addition to our professional interventions, here are some tips from SOS Nettoyage to extend the cleanliness of your windows:

Avoid cleaning in direct sunlight: the heat causes the cleaning solution to dry too quickly, leaving streaks. Prefer an overcast day or cool hours
Never use newspaper: contrary to popular belief, printing ink leaves grey residue on the glass. Use a clean microfibre cloth
Avoid standard household products: most window sprays sold in supermarkets contain waxes and silicones that create a shiny haze but are not truly clean
Clean frames and sills at the same time as the glass to prevent dirt from frames running down onto clean glass
Ventilate regularly: interior condensation is one of the main causes of window soiling in winter
Check the seals: defective seals allow moisture between the panes, creating misting that is impossible to clean (the glazing unit must then be replaced)

Request your free quote

Want to enjoy perfectly clean, streak-free windows? SOS Nettoyage is the professional window cleaning specialist in French-speaking Switzerland. The process is simple and quick:

Contact us by phone, email or online form on our free quote page
Describe your needs: number and type of windows, accessibility, desired frequency
Receive your free, no-obligation quote within 24 hours
Confirm and schedule your intervention at a date that suits you

For large glazed surfaces or complex access, we carry out a free technical visit before preparing the quote.

Spotless windows, guaranteed safety, transparent pricing and an uncompromising result: that is the commitment of SOS Nettoyage. Trust the specialist and rediscover natural light in your interior.

Frequently asked questions about professional window cleaning

How much does professional window cleaning cost in Switzerland?

Prices range from 5 to 10 CHF/m² for standard accessible windows, and up to 15 CHF/m² for windows at height requiring a cherry picker. For residential packages, expect between 150 and 400 CHF for a complete home (interior and exterior, frames and sills included). For offices and commercial premises, packages range from 200 to 800 CHF depending on the surface area. Great height carries an approximately 50% surcharge. Request your free quote from SOS Nettoyage for an exact price suited to your situation.

Why do my windows have streaks after I clean them myself?

Streaks are generally caused by three combined factors: firstly, hard tap water that leaves white mineral deposits when drying; secondly, unsuitable products (some consumer sprays contain waxes and silicones that create a haze); thirdly, an incorrect technique (wiping with a cloth or newspaper instead of professional squeegeeing). SOS Nettoyage eliminates all three problems thanks to reverse osmosis demineralised water, professional products and precision squeegees.

Does professional window cleaning damage frames or seals?

No, our professional technique is perfectly respectful of all materials. We adapt our products and methods to the frame type (PVC, wood, aluminium) and take care of the weatherseals. On the contrary, regular cleaning helps extend the lifespan of your windows by removing acidic and corrosive deposits that, over time, degrade materials. SOS Nettoyage flags any defective seals detected during the intervention.

Do you clean windows in the rain?

In case of light rain, exterior cleaning with pure water remains possible and effective: rainwater does not leave additional streaks on windows cleaned with demineralised water. In case of heavy rain or thunderstorms, we postpone the intervention to guarantee our teams’ safety and an optimal result. Interior cleaning can be carried out in any weather. In case of postponement, we reschedule at no extra charge.

How often should windows be cleaned?

For consistently spotless results, we recommend 4 times per year (each season) for private individuals. The bare minimum is twice a year (spring and autumn). Shops should opt for weekly to monthly cleaning depending on their business. Offices and buildings need monthly to quarterly cleaning. SOS Nettoyage offers regular maintenance contracts with preferential rates for all frequencies.

Do you offer window cleaning maintenance contracts?

Yes, we offer flexible maintenance contracts suited to all needs: weekly, fortnightly, monthly, quarterly or bi-annual. Regular contracts offer up to 20% discount compared to one-off interventions, automatic scheduling and priority service. It is the most cost-effective and convenient solution for keeping your windows spotless throughout the year.

Can you clean very high windows?

Yes, SOS Nettoyage works at all heights. Our carbon fibre telescopic poles reach 18 metres (approximately 5-6 storeys), enabling safe cleaning from ground level. Beyond that, we deploy cherry pickers (up to 30 metres and more) or abseil descent systems. All our teams are trained and certified for work at height in accordance with SUVA and IPAF standards.

Is the hydrophobic treatment worthwhile?

The hydrophobic treatment (lotus effect) is a wise investment for windows particularly exposed to the elements. It keeps your windows clean 2 to 3 times longer between professional cleans. It is particularly recommended for bay windows, conservatories, glass balustrades and shop windows. The treatment lasts between 6 and 12 months and can be renewed with each visit from SOS Nettoyage.

What happens if a window is scratched or damaged during cleaning?

SOS Nettoyage has comprehensive professional liability insurance covering all potential damage: glass breakage, scratching, damage to frames, blinds or facade. In the event of an incident, we handle the replacement or repair without any effort on your part. In over 15 years of business, such incidents are extremely rare thanks to the rigorous training of our teams and the use of suitable professional tools.

What is the difference between SOS Nettoyage and a comparison platform?

SOS Nettoyage is not a comparison platform or an intermediary. We are the cleaning specialist who works directly at your premises with our own trained teams, our own professional equipment and our own insurance. You have a single point of contact, teams you know and consistent quality guaranteed. No surprises, no unknowns: you are calling on a trusted company that stakes its reputation on every intervention. Request your free, no-obligation quote and see the difference.

Professional Window Cleaning in French-Speaking Switzerland