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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,888 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceBernBiollay Spezialbau AG
Biollay Spezialbau AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The company's core activity is the planning, consulting and execution of work in the field of floor coverings, including seamless floor coverings, cast asphalt-terrazzo, sealings, screed, hard concrete, resin coatings and concrete repairs. The company offers a comprehensive package of services for the realization of floor coverings and related work.

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Products & services

Industry:Building Maintenance
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4.0/5

Biollay Spezialbau AG

7
Seamless floor build-ups and coverings
Custom floor build-ups, coatings, exposed floors, hard concrete, cast asphalt terrazzo and terrace waterproofing for seamless solutions, from consultation to handover on completion.
Coatings
Floor coatings based on synthetic resins for hygienic areas such as bathrooms and wellness facilities, easy-care floors and walls in practically any color.
Renovations
Renovation and modernization of floors and floor coverings, as well as remediation of waterproofing damage, for industry, retail, hospitals, schools and private homes.
Subfloor screeds
Subfloor screeds made from cement or anhydrite as a load-bearing base for resin, parquet or tiled floors; on request, also refined into exposed floors.
Exposed floors
Low-maintenance design floors made from natural components with performance comparable to hard concrete, available in different grinding finishes.
Hard concrete
Robust hard concrete floors for heavily used substrates in industrial buildings and underground garages, optionally with visual finishing such as terrazzo look.
Cast asphalt terrazzo
Dense, dimensionally stable and hygienic cast asphalt terrazzo floors for cattle barns, bridges and residential areas, optionally refined to a rustic or diamond-ground finish.
Trust & reputation

ranQ Trust Score of Biollay Spezialbau AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Biollay Spezialbau AG scores 59.4 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.52.524%
  • 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.61.010%
  • 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 Spezialbau AG scores 89.3 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.70.07%
Biollay Spezialbau AG 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 Spezialbau AG scores 12.6 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 35.12.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Biollay Spezialbau AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 3.8 out of 5 stars from 10 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
3.8
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle3.810
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Rehhagstrasse 3
3018 Bern

At a glance

Legal form
Corporation
UID
CHE-114.920.195
Founded
2009 · 17 years
Last commercial register change
December 5, 2025
Employees
11 to 20
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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