Facade cleaning represents a variable expense, where the price per square meter tells only part of the story. Depending on the chosen technique, the price for house facade cleaning ranges from about ten to a hundred euros per square meter. The real question is what this amount actually covers, and especially what will need to be spent in the following years to maintain the result.
Price comparison per m² according to facade cleaning technique
The price differences between techniques reflect both the equipment used and the level of qualification required. Here are the ranges observed among industry professionals.
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| Technique | Price per m² (incl. VAT) | Suitable for fragile surfaces |
|---|---|---|
| High pressure (Kärcher) | 10 – 25 € | No |
| Chemical cleaning | 11 – 35 € | Yes (depending on product) |
| Nebulization | 15 – 20 € | Yes |
| Peeling | 25 – 45 € | Yes |
| Gommage / Hydrogommage | 30 – 70 € | Yes |
| Sandblasting | 35 – 95 € | No |
| Sanding | 50 – 100 € | No |
For a house with approximately 110 m² of facade surface, the total cost is around 2,200 € incl. VAT on average, based on a rate of 20 €/m². This amount can vary significantly depending on the initial condition of the surface and the accessibility of the site.
One detail that affects the final quote: the decreasing rate. Several providers apply a lower price per square meter for larger areas but increase the rates for small, hard-to-access jobs. Comparing the price for house facade cleaning among several local craftsmen remains the most reliable method to avoid overpaying for a standard service.
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Total cost over 5 to 10 years: the technique makes all the difference
The initial price of facade cleaning says nothing about the actual expense over time. Two parameters can significantly affect the total: the frequency of re-intervention and the risk of damaging the surface.
High pressure: economical at first, costly in the long run
High-pressure cleaning has the lowest entry price. However, the high-powered water projection gradually erodes soft coatings, old renders, and certain porous stones. Each pass weakens the surface, which accelerates the return of moss and dirt.
On a rendered facade, high-pressure cleaning may require re-intervention every two to three years. Multiply this frequency over a decade, and the cumulative budget often exceeds that of a gentler technique applied less frequently.
Hydrogommage and nebulization: an investment that pays off
Hydrogommage projects a mixture of water and fine powder at low pressure. Nebulization uses a mist of water that dissolves dirt without mechanical impact. Both techniques preserve the integrity of the surface.
Their unit cost is higher (from 15 to 70 €/m² depending on the method). In return, the facade stays clean longer, often twice as long as high-pressure cleaning. Over a ten-year cycle, the number of interventions decreases, and the surface does not require intermediate coating repairs.
Sandblasting and sanding: very targeted use cases
Sandblasting and sanding are the most abrasive and expensive techniques. They are justified on very dirty hard stone facades or before a complete renovation. Using them on a render or soft coating amounts to stripping the coating itself, which can lead to repair costs sometimes exceeding those of cleaning.
Facade cleaning quotes: hidden costs that inflate the bill
A facade cleaning quote displayed at 15 €/m² can easily double once additional services are added. Professionals are increasingly offering “packs” that include treatments in addition to the cleaning itself.
- The anti-moss or biocide treatment, applied after cleaning to delay recolonization by microorganisms, adds several euros per square meter to the quote
- The application of a water-repellent treatment protects the surface against water infiltration and prolongs the duration of the cleaning, but represents a significant additional cost
- The rental or installation of scaffolding, essential beyond a certain height, can represent a notable part of the total budget
- Travel expenses and surcharges for difficult access (shared facade, dense vegetation, sloped terrain) are rarely included in the displayed price per square meter
Before signing, ensure that the quote details each line item. A total price without breakdown makes it impossible to make a serious comparison between craftsmen.
Choosing the technique based on the surface: quick decision grid
The choice of technique is not solely based on budget. The material of the facade imposes non-negotiable technical constraints.
- Soft stone, tuff, heritage facade: nebulization or gentle gommage, any high-pressure projection should be excluded
- Recent render or plaster (less than ten years): hydrogommage or suitable chemical cleaning, which preserve the finish layer
- Brick or raw concrete: high pressure remains feasible if the pressure is correctly adjusted, but hydrogommage offers a more uniform result
- Wood cladding: low-pressure cleaning is mandatory to avoid tearing the wood fibers or degrading the stain
A serious professional inspects the surface before proposing a technique. If the quote arrives without a prior visit, it is a warning sign about the quality of the upcoming service.
The price per square meter remains a useful reference for comparing offers. It is not enough to assess the relevance of an investment. The lowest expense today often generates the heaviest bill at the five-year mark, due to frequent re-interventions and surface repairs. Cross-referencing price, technique, and type of facade before validating a quote helps avoid this recurring trap.