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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesRoofingMartignyPradervand & Duay SA
Pradervand & Duay SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Pradervand & Duay SA is the execution of works in the field of roofing, sheet metal work, waterproofing and facade cladding. Specifically, the company offers services in the following areas: Couverture (roofing), Ferblanterie (sheet metal work, including classic and decorative elements), Étanchéité (waterproofing) and Revêtement de façade (facade cladding). The company specializes in the execution of these works and has certified personnel with many years of experience.

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Products & services

Industry:RoofingSheet Metal Work
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Pradervand & Duay SA

✓ Offered4
Roof covering
Roof covering work for new and existing roofs, laying concrete and terracotta tiles, fibre cement, Eternit, natural slate, aluminium Préfa and metal cladding.
Sheet metal work
Classic and decorative sheet metal work, gutters, downpipes, drip edges, window sills, profiles, chimney flashings, dormer cladding and small roof turrets.
Roof waterproofing
Waterproofing work for roofs and insulation, bituminous waterproofing, installations compliant with the SIA standard.
Facade cladding
Installation of facade cladding on residential buildings and existing structures, creation of ventilated facades, replacement of damaged panels, washable elements.
Trust & reputation

ranQ Trust Score of Pradervand & Duay SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Pradervand & Duay SA scores 63.7 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.67.724%
  • 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.65.210%
  • 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.50.08%
Pradervand & Duay 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%
Pradervand & Duay SA 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%
Pradervand & Duay SA scores 12.0 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 35.12.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Pradervand & Duay SA reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 4.4 out of 5 stars from 12 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
4.4
of 5

Aggregated from 12 reviews across all connected sources

Sources
GGoogle4.412
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Rue du Châble-Bet 34
1920 Martigny
Opening hours
Mon
07:30 - 12:00, 13:15 - 17:15
Tue
07:30 - 12:00, 13:15 - 17:15
Wed
07:30 - 12:00, 13:15 - 17:15
Thu
07:30 - 12:00, 13:15 - 17:15
Fri
07:30 - 12:00, 13:15 - 17:15
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-103.091.850
Founded
1984 · 42 years
Last commercial register change
July 8, 2024
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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