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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesMassongexBiollay SA
Biollay SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Biollay SA provides concrete repair and protection services, sprayed concrete (gunite), mineral and synthetic waterproofing, structural reinforcement, resin floor systems and surface preparation including sandblasting.

AI-generated
Offering

Products & services

Industry:Specialized Construction Activities
✓ Offered6
Concrete remediation / protection
Remediation and repair of concrete, removal of deteriorated concrete, passivation of reinforcing steel, injection of cracks, protection of surfaces, WTA remediation.
Structural strengthening
Structural strengthening using carbon fibre strips, carbon fibre fabrics, steel strips, glass and aramide fabrics, punch-through reinforcement for reinforced concrete structures.
Waterproofing
Waterproofing coatings, sprayed waterproofing, waterproofing of buried structures, application of PMMA and polyurea resin, injection of water ingress points, joint treatment.
Resin floor coating
Installation of resin floor coatings for concrete protection or aesthetic use, using epoxy, polyurethane, PMMA resins, mortars and preparation of the substrates.
Shotcrete - Gunite
Placement of concrete by wet-mix or dry-mix shotcrete for shoring, stabilisation of slopes, vaults, walls and other complex shapes without formwork.
Abrasive blasting - Surface preparation
Abrasive blasting, shot blasting, grinding and preparation of substrates in concrete, steel or wood before coating, or for an aesthetic finish and improved surface roughness.
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4.1/5

Biollay SA

Trust & reputation

ranQ Trust Score of Biollay SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Biollay SA 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%
Biollay SA scores 85.5 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.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%
Biollay SA 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%
Biollay SA 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

Biollay SA 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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Comparisons

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Location

Route des Ilettes 6
1869 Massongex
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-105.755.276
Founded
1973 · 53 years
Last commercial register change
November 7, 2022
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.70.03%
    • Full methodology

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