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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding ConstructionWinterthurWalter Melere AG
Walter Melere AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Walter Melere AG provides structural fire protection services, including soft firestopping, mortar-based firestopping, fire protection claddings, firestop joints, silicone and hybrid sealants, and core drilling. The company also offers fire protection consulting and digital fire protection documentation.

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Products & services

Industry:Building Construction
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Walter Melere AG

Building Maintenance
Site Preparation
Masonry Work
Painting & Plastering
✓ Offered8
Soft firestopping
Soft firestopping for fire and smoke compartmentation at penetrations through walls, ceilings and floors, for example for cables and pipes, using flexible intumescent materials.
Firestopping with mortar
Firestopping with fire-resistant mortar for penetrations of cables, pipes and services through fire walls, ceilings or floors.
Fire protection cladding for components
Fire protection cladding for beams, columns, ventilation and smoke extraction ducts, partition walls and fire protection ceilings to protect against fire and smoke.
Firestop joints
Firestop joints to limit the spread of fire and smoke and to protect the structural integrity of fire protection walls and ceilings.
Silicone and hybrid joints
Silicone and hybrid joints for durable, flexible sealing in indoor and outdoor applications, also for walls, windows, doors and fire protection.
Core drilling
Core drilling in concrete, masonry, natural stone, asphalt or steel for openings such as pipe runs, cables, ventilation systems or window openings.
General fire protection consulting
Advice on estimating and preparing structural proposals in line with the current VKF guidelines, with a focus on cost optimisation.
Digital fire protection documentation
Digital fire protection documentation to optimise processes, ensure cost transparency and full traceability.
Trust & reputation

ranQ Trust Score of Walter Melere AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Walter Melere AG scores 61.4 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.76.724%
  • 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.45.610%
  • 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.35.08%
Walter Melere AG 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%
Walter Melere AG scores 83.3 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).83.322%
Walter Melere AG scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Walter Melere 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 5 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 5 reviews across all connected sources

Sources
GGoogle55
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Ibergstrasse 87
8405 Winterthur

At a glance

Legal form
Corporation
UID
CHE-108.050.858
Founded
1982 · 44 years
Last commercial register change
September 3, 2026
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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