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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionGenevaTravaux spéciaux Biollay S.A.
Travaux spéciaux Biollay S.A. Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Travaux spéciaux Biollay S.A. provides concrete repair and protection, resin floor coatings, structural reinforcement, waterproofing of structures, shotcrete (gunite), and sandblasting and surface preparation services.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered6
Concrete rehabilitation and protection
Concrete rehabilitation and protection, removal and repair of degraded concrete, passivation of reinforcement steel, injection of cracks, surface protection and WTA concrete rehabilitation.
Structural strengthening
Structural strengthening using carbon laminates, carbon fabrics, steel laminates, glass and aramid fabrics, as well as strengthening against punching to adapt structures to operating constraints.
Waterproofing
Waterproofing works for coatings, below-ground structures and sprayed-on waterproofing, with PMMA resin, polyurea, waterproofing coatings, injections and joint treatment.
Resin floor coating
Installation of resin floor coatings for concrete protection or an aesthetic finish, using epoxy resins, polyurethane, PMMA, mortars, floor paints and substrate preparation.
Shotcrete - Gunite
Shotcrete placement by wet or dry process on ground, walls, vaults or slopes for shoring, stabilisation, nailed walls and complex shapes without formwork.
Sandblasting - Surface preparation
Sandblasting, shot blasting, grinding and preparation of concrete, steel or wood substrates before coating, or for an aesthetic finish and better integration of the structures.
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3.8/5

Travaux spéciaux Biollay S.A.

Trust & reputation

ranQ Trust Score of Travaux spéciaux Biollay S.A.: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Travaux spéciaux Biollay S.A. scores 67.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.67.424%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.58.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.78.08%
Travaux spéciaux Biollay S.A. scores 54.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.39.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
Travaux spéciaux Biollay S.A. scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
Travaux spéciaux Biollay S.A. scores 10.9 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.10.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Travaux spéciaux Biollay S.A. reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.4 out of 5 stars from 9 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
4.4
of 5

Aggregated from 9 reviews across all connected sources

Sources
GGoogle4.49
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Boulevard Georges-Favon 43
1204 Geneva
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-411.225.605
Founded
2024 · 2 years
Last commercial register change
October 30, 2024
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
76.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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