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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialist foundation engineeringUnteribergSpenglerei Martin Grab GmbH
Spenglerei Martin Grab GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Spenglerei Martin Grab GmbH is a specialist company for building envelopes and sheet metal work. It plans and carries out pitched roofs, flat roofs, facade construction and lightning protection systems.

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Service area

Offering

Products & services

Industry:Specialist foundation engineeringMetalwork
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3.5/5

Spenglerei Martin Grab GmbH

Plumber
Sheet metal worker
✓ Offered5
Building Envelope and Sheet Metal Work
Planning and execution of building envelopes with sheet metal work, including support for larger developments and complete building envelopes.
Pitched Roof Work
Pitched roof covering with Prefa, Eternit or tiles, plus profiled sheet covering, sheet metal work and seam systems.
Flat Roof Work
Flat roof waterproofing systems for new builds and renovations, using standard construction industry systems.
Facade Construction
Cladding for new builds and renovations with sandwich panels, profiled sheets and bonded facades.
Lightning Protection Systems
Complete lightning protection solutions for buildings in accordance with legally required standards.
Trust & reputation

ranQ Trust Score of Spenglerei Martin Grab GmbH: 3.5 out of 5.0

Trust Score3.5/ 5.0

Solid

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Data basis 54% · As of November 2026

Spenglerei Martin Grab 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%
Spenglerei Martin Grab GmbH scores 41.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.0.012%
  • 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%
Spenglerei Martin Grab GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
Spenglerei Martin Grab GmbH scores 7.4 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 35.7.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Spenglerei Martin Grab GmbH reaches a ranQ Trust Score of 3.5 out of 5.0 — rated «Solid». 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.

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Location

Riedweg 15
8842 Unteriberg

At a glance

Legal form
Branch
UID
CHE-277.431.347
Founded
2026 · 0 years
Last commercial register change
August 31, 2026
Employees
11 to 20

Active in 1 of 26 cantons

  • SZSchwyz
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.
76.0
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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