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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionLonayTravaux 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 services, resin floor coatings, structural strengthening and waterproofing for civil and building structures. The company also offers shotcrete (gunite), surface preparation and sandblasting services, together with technical expertise and consulting.

AI-generated
Offering

Products & services

Industry:Building Construction
✓ Offered6
Concrete restoration / concrete protection
Concrete restoration and protection, removal and repair of deteriorated concrete, passivation of steel reinforcements, application of corrosion inhibitors, crack injection and surface protection.
Structural strengthening
Strengthening of reinforced concrete structures, installation of carbon laminates, installation of carbon fabrics, installation of steel laminates, installation of glass and aramid fabrics, punching shear strengthening.
Waterproofing
Waterproofing works for structures, waterproofing coating, sprayed waterproofing, waterproofing of buried structures, injection of water ingress and joint treatment.
Resin flooring
Installation of resin floor coatings for protecting the concrete or for aesthetics, with epoxy, polyurethane, PMMA resin, mortar, floor paint and substrate preparation.
Shotcrete - Gunite
Shotcrete by wet or dry process for walls, vaults, slopes, retaining structures, stabilization and complex shapes, with spraying onto the floor, wall or vault.
Sandblasting - Surface preparation
Sandblasting and treatment of substrates in concrete, steel or wood before coating, quality control of the substrate, preparation for finishing or for an aesthetic finish.
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4.1/5

Travaux spéciaux Biollay S.A.

Trust & reputation

ranQ Trust Score of Travaux spéciaux Biollay S.A.: 4.1 out of 5.0

Trust Score4.1/ 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 87.1 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.100.012%
  • 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 4.1 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.

Knowledge

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Location

Route de Denges 32
1027 Lonay
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
Corporation
UID
CHE-106.347.313
Founded
1988 · 38 years
Last commercial register change
September 27, 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.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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