What are the expected costs for sandblasting?

What does sandblasting exactly involve?

Sandblasting uses compressed air to spray a mixture of sand (or other abrasive material) and possibly water against the facade. The force of this jet ensures that dirt, deposits and old layers of paint are mechanically removed from the facade.

This process essentially sands off the top contaminated layer of the stones or joints, making the underlying material clean and even.

When is sandblasting applied?

Sandblasting is mainly used when the contamination is too stubborn for milder methods such as steam or high-pressure cleaning. Consider:

• Deep moss and algae growth
• Stubborn soot deposits
• Paint residues and graffiti
• Heavily weathered surfaces
• Old facades where the original color needs to be restored

It is important that the facade is strong enough to withstand this intensive treatment. For vulnerable facades, moist blasting or mist blasting is usually chosen.

How does the sandblasting process work?

1. Facade inspection
   The facade specialist assesses the condition of the stones and joints to determine if sandblasting is suitable.
2. Masking and protection
   Windows, doors and frames are covered to prevent damage.
3. Sandblasting itself
   With compressed air, an abrasive is sprayed against the facade at high speed. Water is often added to reduce dust formation.
4. Cleaning and aftertreatment
   After blasting, the facade is rinsed clean. This is often followed by:
• Joint repair, because joints can become porous due to blasting
• Impregnation to protect the facade against moisture and pollution

Advantages of sandblasting

• Very effective method for heavy soiling
• Old paint, dirt and deposits are thoroughly removed
• Gives the facade a fresh, clean and even appearance

Disadvantages and considerations

• Fairly aggressive method: can damage joints and soft stones
• Requires expertise to prevent damage
• After sandblasting, repair of the jointing and impregnation is often necessary
• Not suitable for monumental or porous facades (mist blasting is used there)

Cost indication 2025

• Sandblasting: average 10 – 17 euros per m²
• Wet blasting (milder variant): 12 – 22 euros per m²
• Combination with impregnation and jointing: 25 – 35 euros per m² total

Conclusion

Facade cleaning by sandblasting is a powerful cleaning technique that is very effective against heavy soiling, but also involves risks due to its intensity. It is therefore a method that should only be carried out by experienced facade specialists. Often sandblasting is part of a larger renovation project, including new jointing and impregnation, to protect the facade against new soiling.

1. Suitability of the facade for sandblasting

Not every facade is suitable for sandblasting.
Important to assess:

• The hardness and quality of the brick or concrete
• The condition of the joints (weak joints can come loose)
• The presence of soft or porous materials, such as sand-lime brick or natural stone (a milder method is usually chosen for this, such as mist blasting)

A specialist always carries out an inspection in advance and often a test piece to see if the method can be applied safely.

2. Degree of pollution and purpose of cleaning

Sandblasting is particularly suitable for facades with:

• Graffiti or layers of paint that have penetrated deep into the surface
• Persistent moss or algae growth
• Severe discoloration or deep soiling from soot and weather influences
• Old facades whose original color and structure you want to restore

For lighter soiling, a milder method is often better and cheaper.

3. Risk of damage

Because sandblasting works mechanically (through abrasion), the technique can:

• Damage and make joints more porous
• Slightly abrade the surface of the stones
• Cause permanent damage if the pressure is too high

Measure: It is important that the blasting pressure and type of abrasive are carefully matched to the facade.

4. Aftertreatment after sandblasting

After sandblasting, aftertreatment is almost always necessary:

1. Renewing the joints: damaged joints are reapplied.
2. Impregnating: to protect the facade against moisture and future pollution.
3. Possible coating: for example, an anti-graffiti coating.

These aftertreatments ensure that the facade remains clean for longer and that damage from weather influences is limited.

5. Environmental factors and protection

During sandblasting:

• Windows, doors and frames must be properly taped off to prevent damage.
• Dust formation can occur, which means that neighboring buildings must also be protected.
• The environment must be taken into account (e.g. traffic, pedestrians).

6. Cost assessment

• Basic price sandblasting: approximately 10 – 17 euros per m².
• Extra costs: repair of jointing and impregnation afterwards.
• Total project price: often 25 – 35 euros per m² if these steps are combined.

Although sandblasting seems relatively cheap per m², the additional after-treatments must be taken into account.

7. Expertise of the executor

Sandblasting is craftsmanship:

• It must be carried out by experienced facade specialists.
• An incorrect setting of pressure or abrasive can lead to permanent damage.
• Reliable companies work with a sample and give a guarantee on their work.

A platform like jeofferte.nl can help to find and compare recognized and experienced specialists.

Conclusion

Important considerations for facade cleaning by sandblasting are:

1. Is the facade suitable? (material, condition and sensitivity)
2. Is the pollution heavy enough to justify this method?
3. What are the risks and what after-treatment is required?
4. Who carries out the work and with what settings and precautions?

Sandblasting can completely renew a facade, but it must be carefully planned and executed to prevent damage and achieve a long-lasting result.

1. Indicative prices per m²

For facade cleaning by sandblasting, the following average prices apply in 2025:

• Sandblasting: 10 – 17 euros per m²
• Wet blasting (milder variant): 12 – 22 euros per m²
• Nebula blasting (for fragile facades): 15 – 20 euros per m²

The price applies to the blasting itself, excluding any post-treatment such as repointing or impregnation.

2. When to choose sandblasting?

Sandblasting is used for:

• Heavy soiling that cannot be removed with steam or high pressure
• Stubborn moss and algae growth
• Paint residues, graffiti and soot deposits
• Old facades whose original color and structure you want to restore

3. Post-treatment after sandblasting (additional costs)

Because sandblasting is quite intensive, additional work is often performed afterwards:

• Repairing or renewing joints: 30 – 45 euro per m²
• Impregnation: 6.50 – 10 euro per m²
• Optional anti-graffiti coating: depending on type, usually on quotation basis

In projects, this is often combined in one process. This increases the total investment but extends the lifespan of the facade.

4. Example costs per dwelling type

Example 1 – Terraced house (60 m² facade)

• Sandblasting: 60 × 15 euros = 900 euros
• Repointing (optional): 60 × 35 euros = 2,100 euros
• Impregnation: 60 × 9 euros = 540 euros
  Total costs (full process): approx. 3,540 euros

Example 2 – Terraced house (100 m facade)

• Sandblasting: 100 × 15 euros = 1,500 euros
• Repointing: 100 × 35 euros = 3,500 euros
• Impregnation: 100 × 10 euros = 1,000 euros
  Total costs (full process): approx. 6,000 euros

Example 3 – Detached house (150 m² facade)

• Sandblasting: 150 × 16 euros = 2,400 euros
• Repointing: 150 × 35 euros = 5,250 euros
• Impregnation: 150 × 10 euros = 1,500 euros
• Possible scaffolding: 1,000 euros
  Total costs (full process): approx. 10,150 euros

5. Main price factors for sandblasting

1. Surface area of the facade
2. Degree of soiling and type of soiling
3. Accessibility (scaffolding or aerial platform needed?)
4. Post-treatment such as repointing and impregnation

6. Conclusion

The costs for facade cleaning by sandblasting in 2025 will be between 10 and 17 euros per m². When the project is extended with repointing and impregnation, the total price usually comes to 25 to 35 euros per m². For an average corner house, a total budget of 5,000 to 7,000 euros should be considered for a complete process.

Comparing quotes through a platform like jeofferte.nl helps to choose a reliable specialist and find the most suitable price-quality ratio.

1. Inspection and analysis of the facade

Goal: Determine if sandblasting is the right method.

• The facade specialist looks at:
• The condition of the stones and joints
• The type of pollution (moss, soot, graffiti, paint)
• The risk of damage with this cleaning method
• Sometimes a small test piece is blasted to test the reaction of the material.

Result:
An advisory report with the correct blasting method (dry sandblasting, wet blasting or mist blasting).

2. Preparation and protection

Goal: Protect the house and surroundings.

• Windows, doors and frames are taped off with foil.
• Any sensitive elements (e.g. woodwork and plants) are covered.
• Safety precautions are taken around the workplace if necessary.

Result:
The facade and the surroundings are protected against dust and damage.

3. Choice and setting of blasting material and pressure

Goal: Adjusting the technique to the situation.

• The specialist chooses the right blasting material (e.g. quartz-poor sand or another blasting agent).
• The pressure and beam width are adjusted to:
• The hardness of the stones
• The degree of pollution
• The desired end result

4. The actual sandblasting

Goal: Intensive cleaning of the facade surface.

• With a compressor, the abrasive is sprayed under high pressure against the facade.
• The contaminated top layer is removed.
• If wet blasting is used, water is added to reduce dust.

5. Post-cleaning and assessment

Goal: Checking the result.

• After sandblasting, the facade is thoroughly rinsed with water to remove abrasives and dust.
• The facade is inspected to check whether all contamination has been removed and whether any damage has occurred.

6. Repair of joints (if necessary)

Goal: Ensure a sturdy, moisture-resistant facade.

• Damaged joints are removed and replaced.
• If the joint work is severely affected, the entire facade will be re- jointed.

7. Impregnation of the facade

Goal: Protect against future pollution and moisture.

• A transparent protective layer (impregnating agent) is applied.
• This reduces water absorption and slows down new pollution.

8. Completion and aftercare

Goal: Completion and warranty.

• The facade is inspected together with the customer.
• Advice is given for future maintenance.
• Any warranty conditions are established.

Timeline

• Small facade (up to 60 m²): 1 to 2 days
• Average project (100 m²): 3 to 5 days
• Large or complex facade: 1 to 2 weeks, depending on accessibility and weather conditions

Important to know

• Sandblasting is an intensive method and should only be performed by experienced facade specialists.
• After sandblasting, post-treatment with jointing and impregnation is almost always necessary to protect the facade.

Conclusion

The sandblasting process consists of: inspection, preparation, blasting, cleaning, repair of joints and protection by impregnation. By carefully following this process, a facade becomes clean again and well protected for the long term.