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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInsulationFlühBau-Flex Dettwiler AG
Bau-Flex Dettwiler AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Bau-Flex Dettwiler AG provides building waterproofing and joint-sealing services. Its offerings include sealing-tape installation, concrete injections, groundwater waterproofing, liquid membrane coatings, injection hoses, stone-wall restoration and firestop installations.

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Products & services

Industry:Insulation
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4.1/5

Bau-Flex Dettwiler AG

✓ Offered8
Sealing tape installation
Weatherproof sealing tapes for window, façade, conservatory and roof connections, as well as other connection joints.
Concrete injections
Injection resin to close cracks and penetrations in concrete walls under high pressure.
Groundwater waterproofing
Waterproofing using injection hoses and full-surface, watertight protective coatings for basement floors and walls.
Injection hoses
Post-injectable hoses for construction joints in concrete; initially seal via swellable inserts and enable later re-injections.
Joint sealants
Long-lasting elastic sealing compound for joints in showers, bathrooms, kitchens or swimming pools, as well as for tiles, natural stone surfaces and façade expansion joints.
Liquid membrane coatings
Water-impermeable liquid membranes for waterproofing balconies, showers, tank rooms and walls.
Rubble stone wall repairs
Gentle renovation of rubble stone walls with injection resin to line penetrations.
Firestopping
Firestopping with mineral fiber boards and fire-protection mortar for cable ducts, ventilation lines, and wall and ceiling penetrations.
Trust & reputation

ranQ Trust Score of Bau-Flex Dettwiler AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of November 2026

Bau-Flex Dettwiler AG scores 64.9 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.69.624%
  • 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.35.310%
  • 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%
Bau-Flex Dettwiler AG 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%
Bau-Flex Dettwiler AG scores 86.7 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).86.722%
Bau-Flex Dettwiler AG scores 17.1 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 35.17.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Bau-Flex Dettwiler AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.7 out of 5 stars from 3 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.7
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle4.73
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Hofstetterstrasse 15
4112 Flüh

At a glance

Legal form
Corporation
UID
CHE-106.403.124
Founded
2007 · 19 years
Last commercial register change
June 30, 2025
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • SOHofstetten-Flüh
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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