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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingOllon VdAlain Naef SA
Alain Naef SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Alain Naef SA is the execution of works in the field of roofing, sheet metal work and waterproofing, including: Roofing (Couverture): insulation, counter-battening, battening, and covering of roofs; Sheet metal work: manufacturing and installation of roof waterproofing, gutters, downspouts, roof windows and ventilation openings; Waterproofing: sealing of flat and pitched roofs; Roof maintenance: maintenance and upkeep of roofs, including inspection and repair of roof tiles and gutters.

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Offering

Products & services

Industry:RoofingSheet Metal Work
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4.0/5

Alain Naef SA

✓ Offered3
Roofing
New-build and renovation roofing work, roof insulation, counter-battens, battens, laying underlay and materials such as concrete tiles, clay tiles, natural slate and sheet-metal cladding.
Sheet-metal work and waterproofing
Sheet-metal work for chimneys, roof windows, gutters, downpipes, dormers, ventilation outlets and various cladding; waterproofing of flat and pitched roofs.
Roof maintenance
Cleaning the roof, cleaning the gutters, replacing broken tiles and roof repairs depending on the condition and the waterproofing of the roof.
Trust & reputation

ranQ Trust Score of Alain Naef SA: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Alain Naef SA scores 61.3 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.49.324%
  • 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.63.210%
  • 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.95.08%
Alain Naef SA 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%
Alain Naef SA 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%
Alain Naef SA scores 6.6 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 35.6.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Alain Naef SA reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 3.7 out of 5 stars from 11 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
3.7
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle3.711
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Rue de l'Industrie
1867 Ollon Vd
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-101.961.842
Founded
1980 · 46 years
Last commercial register change
July 21, 2015
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.
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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