Surface prep before painting
Le problème
Concrete skin and laitance compromise primer and topcoat adhesion.
Sept Tools
Petit Potam plus diamond pad with appropriate grit for a code-compliant surface finish.
Sept Tools
Professional brushless concrete wall grinding
Brushless wall grinders, ergonomic and IP65 rated, for the preparation, renovation and finishing of concrete walls.
Concrete wall grinding is a critical step before painting, plastering, facade renovation or the installation of any bonded coating. Sept Tools designs and assembles in Roanne, France, a complete range of brushless wall grinders for construction professionals: handheld units for small areas, gantry-mounted machines for large surfaces, and the matching ergonomic accessories. Every machine is built around a single goal: deliver a uniform surface finish without destroying the operator's body over time.
Measured performance
0
Brushless sound level
Comfortably below indoor exposure limits on occupied job sites.
0.35m/s²
Hand-arm vibration
Regulatory ELV 5 m/s². Sept Tools brushless: 14 times below the legal threshold.
IP65
Full sealing
Protection against concrete dust and high-pressure cleaning.
x10
Motor lifespan
4,000 to 6,000 brushless hours versus 600 hours for a brushed motor.
Méthode traditionnelle vs Sept Tools
×
Traditional method
- Brushed angle grinder at 90 dB(A)
- Vibration above 5 m/s²
- Outstretched arms, RULA threshold reached in 2 h
- Diffuse silica dust, audit difficult
- Monthly service on brushes and commutators
✓
With Sept Tools
- Brushless 60 dB(A) on occupied sites
- Vibration 0.35 m/s² (14x below threshold)
- Mygale plus Gecko: full day without pain
- HEPA H13 source capture at 99 %
- Zero motor service across 4,000 to 6,000 hours
Why Sept Tools
French brushless engineering
Brushless 1600 W
Constant torque across the full speed range, zero loss under load, x10 lifespan.
Vibration 0.35 m/s²
Measured at the handle to EN 60745. 14 times below the regulatory 5 m/s² threshold.
Built-in ergonomics
Native compatibility with Mygale, Gecko and Eland Grinding Arm depending on the zone.
Made in Roanne
French engineering and assembly. National 48h service network, 2-year warranty.
Our wall grinding process
1
Substrate diagnosis
Concrete hardness measurement and selection of the right diamond pad.
2
Stripping / grinding
Petit Potam, Gazellomur or Fouine depending on surface and access.
3
HEPA H13 capture
IU33 Longopac, 65 l/s, continuous sealed bagging.
4
Surface check
Verification of target CSP profile for the upcoming coating.
5
Finish installation
Surface delivered ready for paint, plaster or decoration.
- 1
Substrate diagnosis
Concrete hardness measurement and selection of the right diamond pad.
- 2
Stripping / grinding
Petit Potam, Gazellomur or Fouine depending on surface and access.
- 3
HEPA H13 capture
IU33 Longopac, 65 l/s, continuous sealed bagging.
- 4
Surface check
Verification of target CSP profile for the upcoming coating.
- 5
Finish installation
Surface delivered ready for paint, plaster or decoration.
Use cases
For which job sites?
Raw concrete cleanup
Le problème
Formwork lines, cold joints and step-offs between lifts to correct after stripping.
Sept Tools
30 m² of wall per operator per shift with the Petit Potam XM165.
Polished concrete finish
Le problème
The slightest matte veil or scratch becomes a major defect on a visible wall.
Sept Tools
500-4800 rpm variable speed with constant torque for successive diamond and velcro passes.
Wall adhesive stripping
Le problème
PVC adhesive residues, wallpaper and degraded plaster to remove without damaging the sound substrate.
Sept Tools
Gantry-mounted Gazellomur: more than 50 m² per day with a single operator.
Occupied site
Le problème
Inhabited dwellings, working offices: impossible to shut down a whole floor for grinding.
Sept Tools
Brushless 60 dB(A) and class H IU33 Longopac: zero acoustic or dust nuisance.
Silica compliance
Le problème
EU silica limit 0.1 mg/m³ since 2017, several states targeting 0.05 mg/m³ by 2027.
Sept Tools
HEPA H13 source capture on every Sept Tools tool.
Frequently asked questions
Your questions, answered
Which wall grinder for raw concrete?
For surfaces below 50 m², the Petit Potam XM165 is the best balance of power, ergonomics and compactness. For larger areas, the gantry-mounted Gazellomur with load compensator dramatically reduces operator fatigue.
Are your grinders compatible with class H vacuums?
Yes. The entire range works with the IU33 Longopac, the Turbo7 and the RU80. All three meet class H requirements for hazardous dust collection including crystalline silica.
What is the standard delivery lead time?
Machines are assembled in Roanne and shipped within 5 to 10 working days depending on stock. Short-term rentals can be offered as a stopgap while waiting.
Can I trial a machine before buying?
Yes. We regularly run on-site demonstrations across France. Contact our team to schedule a trial on your job site with your actual material.
What warranty applies to the brushless motor?
All brushless motors carry a 2-year parts and labour warranty. The brushless design typically delivers ten times the lifespan of equivalent brushed motors in real-world use.
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