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

About the company

The core activity of Thomas Lanz - Haustechnik GmbH Spenglerei & Bedachungen is the execution of work related to roofs and facades, particularly in the areas of: sheet metal work, lightning protection systems, pitched roofs, flat roofs, facade cladding, special work, solar systems, Velux roof windows and roof glazing. The company offers renovation and new construction services for private individuals and architects and has specialized in these specific works since 1996.

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Offering

Products & services

Industry:RoofingSheet Metal Work
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3.7/5

Thomas Lanz Haustechnik GmbH

Solar & Photovoltaics
✓ Offered7
Building sheet metal work
All sheet-metal work such as guttering, sheet-metal roofs, chimney flashings, ventilation flashings, dormers, roof upstands as well as Velux roof windows and roof glazing inserts.
Pitched roofs
Roof coverings for pitched roofs with falz tiles, beaver-tail tiles, natural slate, Eternit, profiled sheet metal and thin sheet metal in various designs.
Flat roofs
Construction of insulated warm roofs and cold roofs for residential buildings, commercial buildings and car shelters using polymer bitumen, plastic membranes, EPDM or liquid plastic.
Lightning protection systems
Planning and installation of lightning protection systems with external lightning protection, down conductors, earthing and internal lightning protection or potential equalisation.
Facade cladding
Facade cladding with Eternit, Prefa aluminium composite panels and PREFA SIDING.X for building skins and coverings.
Solar systems
Solar systems for single-family homes and multi-family homes as well as PREFA solar roof solutions for roof renovations with PV elements.
Special works
Special sheet-metal and roofing works such as weather vanes, chimney flashings, wooden cladding, safety glass in the roof, leaf guards and balcony railing renovations.
Trust & reputation

ranQ Trust Score of Thomas Lanz Haustechnik GmbH: 3.7 out of 5.0

Trust Score3.7/ 5.0

Solid

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Data basis 88% · As of October 2026

Thomas Lanz Haustechnik GmbH scores 53.3 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.68.224%
  • 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.17.610%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Thomas Lanz Haustechnik GmbH scores 67.8 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.64.612%
  • 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%
Thomas Lanz Haustechnik GmbH scores 83.3 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).83.322%
Thomas Lanz Haustechnik GmbH scores 11.1 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.11.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Thomas Lanz Haustechnik GmbH reaches a ranQ Trust Score of 3.7 out of 5.0 — rated «Solid». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 88%, 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
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Erlachstrasse 1
3234 Vinelz
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-175.080.839
Founded
2021 · 5 years
Last commercial register change
June 15, 2021
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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