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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior fit-outSiegershausenfensterinform gmbh
fensterinform gmbh Logo
Verified· 2 sourcesTrust Score
Summary

About the company

fensterinform gmbh provides services and consultancy for windows and window construction. Its work includes planning for new builds and renovations, expert assessments and reports, consultancy, specialist construction supervision and training, as well as planning and quality assurance for fire protection.

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Presence

Service area

Offering

Products & services

Industry:Interior fit-out
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fensterinform gmbh

✓ Offered8
Planning
Planning for new builds and renovations; initial consultation, feasibility studies, renovation concepts, system evaluations, 2D and 3D detail planning, structural preliminary sizing, building physics and BIM support.
Consulting
Advice on windows and building connections; selection of window materials and functions, listed-building preservation, energy, sound insulation, structural engineering, maintenance, safety and barrier-free execution.
Expert reports / assessments
Neutral expert reports and assessments on windows and building connections; damage identification, on-site inspection, technical mediation, analyses of broken glass, cost evaluations and proposals for cost allocation.
Technical site supervision
Technical site supervision for window installation; mock-ups, technical support for site management, instruction of fitters, ongoing quality controls, documentation, monitoring of costs and schedule as well as acceptance inspections.
Tendering
Tendering for windows and exterior doors; analysis of documentation, definition of technical specifications, bill of quantities according to NPK 371, review of bids and support through award.
Training
Training in window topics; courses for window fitters and designers, contributions to conferences and events, as well as webinars on installation, building physics, sound insulation, standards and window tendering.
Fire protection
Fire protection for windows and doors; fire protection technical consulting, review of plans and requirements, tender and bid review, installation checks, conformity verifications and component development.
Innovation and development
Innovation and development for window solutions; idea generation, specifications (requirements documents), development of products and components, application for certification, application diagrams, system drawings and details for procurement, production and installation.
Trust & reputation

ranQ Trust Score of fensterinform gmbh: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

fensterinform gmbh has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
fensterinform gmbh scores 83.0 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%
fensterinform gmbh 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%
fensterinform gmbh scores 74.3 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 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

fensterinform gmbh reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

Knowledge

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Location

Postweg 1a
8573 Siegershausen
Opening hours
Mon
08:00 - 11:30, 13:30 - 17:00
Tue
08:00 - 11:30, 13:30 - 17:00
Wed
08:00 - 11:30, 13:30 - 17:00
Thu
08:00 - 11:30, 13:30 - 17:00
Fri
08:00 - 11:30, 13:30 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-111.990.727
Founded
2004 · 22 years
Last commercial register change
November 21, 2024
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • TGKemmental
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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