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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesPainting & PlasteringHorgenNorbert Schirmer AG
Norbert Schirmer AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of N. Schirmer AG is the execution of plastering work, drywall construction and related services in the areas of new buildings, conversions, renovations and refurbishments. This includes in particular: Plastering work (stucco, plastering, seamless coatings, decorative techniques), drywall construction (lightweight ceiling systems, lightweight walls, cladding, installation of doors and sliding doors), facade work (external insulation, upgrading of existing external insulation), restoration work (reconstructions, molded parts, special measures), fire protection and soundproofing measures. The company emphasizes the use of natural products and sustainable methods.

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Offering

Products & services

Industry:Painting & Plastering
✓ Offered7
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4.0/5

Norbert Schirmer AG

Gypsum and drywall services
Light construction, plastering work, lime and clay construction, facades, stucco work and special measures for conversions and new builds, renovations and refurbishments.
Light construction
Partitions, apartment partition walls, installation walls, service shaft walls, stud linings, fire compartmentation, claddings, dry plastering as well as suspended ceilings, climate-controlled ceilings and acoustic ceilings.
Plastering work
Base coat, abrasion/finishing render, white plaster, trowel finishing, seamless coatings, insulation render, crack repair as well as decorative and mineral plasters.
Lime and clay construction
Lime plaster, clay plaster, local clay and lime or clay finishing coats for refurbishment and new builds, using natural and ecological materials.
Facades
External insulation systems, compact facades and facade renders for new construction, renovation and adding insulation to existing insulation layers.
Stucco work
Restoration, ornamental moulding work, re-setting work, reconstructions and moulded elements for stucco on walls, ceilings and vaults.
Special measures
Fire compartmentation, fire protection, sound insulation, room acoustics and thermal protection to safeguard people, buildings and living comfort.
Trust & reputation

ranQ Trust Score of Norbert Schirmer AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Norbert Schirmer AG scores 60.4 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.70.824%
  • 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.27.910%
  • 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.70.08%
Norbert Schirmer AG scores 89.3 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.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.70.07%
Norbert Schirmer AG scores 85.0 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).85.022%
Norbert Schirmer AG scores 1.4 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 35.1.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Norbert Schirmer AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Gehrenstegweg 2
8810 Horgen
Opening hours
Mon
07:30 - 17:30
Tue
07:30 - 17:30
Wed
07:30 - 17:30
Thu
07:30 - 17:30
Fri
07:30 - 17:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-100.983.226
Founded
1986 · 40 years
Last commercial register change
September 1, 2011
Employees
11 to 20
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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