Expertise

Findings & expert reports

Identify and analyse with rigour and precision.

Our expertise covers damage, water ingress and construction defects through comprehensive evaluation of materials, workmanship methods and project complexity.

We provide a detailed technical report with clear conclusions and a weighted assessment of liability implications. Our competent and impartial service delivers in-depth technical expertise.

Our Specialist Expertise

Critical area identification

Technical inspections

On-site testing

Swiss standards SIA & compliance benchmarking

Construction detail validation

Protocol development

Impact of the Last 10 Years in Numbers

147

Consulting Projects - Remediation Works Sites

511

Expert Assessments and Judicial Expert Reports

115

Work Supervision/AMO Projects - SIA Quality Control

258

New Clients

Example Scenario 1

Request for Roof and Facade Inspection of a Building

Approach

An initial site visit was conducted during rainy weather conditions, revealing water ingress at multiple points on both the roof and facades. A follow-up inspection took place six days later in dry weather conditions, using a bucket truck for close examination of the identified defects.

Observations

The inspection revealed multiple defects:

Water ingress through the roof edges, migrating inside the building and along the glazing.
Waterproofing breaches have caused damage to technical rooms, kitchens, and lower-level spaces.
Eaves water pooling resulting from inadequate drainage design.
Facade base design flaws allowing water penetration between glazing and concrete, which compromises insulation and internal structures.
Missing roof underlay – the absence of perimeter waterproof underlay exacerbates infiltration in the event of heavy rain.

Conclusion

The inspection confirmed that while the central roof section complies with the Swiss standards SIA, the protruding elements and perimeter flashings exhibit significant waterproofing failures. This lack of protection has led to water ingress affecting the building facades, interior spaces and technical infrastructure.

Example Scenario 2

Request for a villa expertise to assess the condition of its insulated facades

Situation

The analysis revealed multiple defects related to the metal window and French door frames, as well as the sealing joints. Insufficient fixings, buckling of the frames and non-compliant connection details (BG1 joints, lack of compartmentalisation, unsuitable corner profiles, etc.) are causing significant water infiltration through the façade.

Approach

Comprehensive Visual Inspection: Thorough examination of all façades, focusing on connection points between elements (frames, seals, fixings).
Benchmarking Against Standards: Comparison of findings with the requirements of applicable standards and technical specifications (SIA 243, SIA 274, Dosteba, ASC, KABE Sheet) to identify non-compliances.
Critical Area Identification: Detection of zones where waterproofing is compromised, such as torn seals, incorrectly sized components, and defective finishes.

Methodology

On-Site Technical Inspection: Detailed assessment conducted on-site, identifying defects across all façades (17 points).
Reference to Standards: Systematic verification of installations against regulatory requirements and supplier specifications.
Documentation & Analysis: Recording of technical observations to confirm that the entire structure fails to provide adequate waterproofing, justifying a comprehensive revision of the thermal envelope’s junction design.

Summary

The expert assessment highlights a series of critical non-compliances (SIA 243, SIA 274, Dosteba, ASC, and KABE Sheet standards), compromising the façade's waterproofing and structural stability. A full overhaul of the installations is required to ensure the building's long-term integrity.

Next Steps

Following the expert assessment, the client has appointed PERMABETON as the site works supervisor (DT) to coordinate the remediation works.