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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingBalgachA. Bölsterli GmbH
A. Bölsterli GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Andreas Bölsterli GmbH encompasses the provision of services and works in the field of building envelope and technology, specifically: Roofing (manufacturing and renovation of roofs), sheet metal work (metalwork for roofs, facades and other building components), fall protection (installation of systems for securing roofs and facades), building services (installation and maintenance of technical systems in buildings), and gas depot (storage and distribution of gas). The company also offers consulting and planning services in these areas and strives for customer-specific and high-quality execution.

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Products & services

Industry:Roofing
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4.0/5

A. Bölsterli GmbH

Sheet Metal Work
✓ Offered5
Roofing and façades
Flat roofs, pitched roofs and façades; roof refurbishments, custom roofing solutions, façade design and implementation for commercial and residential buildings.
Sheet metal work
Gutter installation, sheet-metal cladding, façade work, window sills with reveals and metal chimney flashings.
Fall protection
Custom fall-protection systems for roofs, protection during work at height, safe integration into the roof architecture.
Building services
Sanitary installations, heating systems, heat pumps, service, maintenance, repairs and renovation of sanitary installations.
Gas depot
Gas supply with bottle depot, refills for composite and steel cylinders, collection of cylinders from other providers, and ordering by phone or email.
Trust & reputation

ranQ Trust Score of A. Bölsterli GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

A. Bölsterli GmbH scores 67.9 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.68.824%
  • 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.49.510%
  • 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.88.08%
A. Bölsterli GmbH scores 72.3 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.75.012%
  • 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%
A. Bölsterli GmbH scores 83.3 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).83.322%
A. Bölsterli GmbH scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

A. Bölsterli GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 out of 5 stars from 6 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
4.5
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle4.56
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Eichholzstrasse 21
9436 Balgach

At a glance

Legal form
Limited Liability Company
UID
CHE-194.881.811
Founded
2019 · 7 years
Last commercial register change
November 16, 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.
88.0
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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