White Papers


White Papers

Building industry

Material Testing

  • Materials science investigations in analytics, materialography and microscopy (LIM and scanning electron microscopy)
  • Reported by a seasoned pro  
  • Preparation for expert witnesses with resilient laboratory reports


  • Detection of nickel sulfide inclusions
  • Fracture pattern analysis ("butterflies")
  • Verification of stress states in strengthened or non-strengthened glasses
  • Expert opinion
  • Preparatory work for expert witnesses

Damage Analysis

  • Investigations of thermal insulation and/or solar control coatings
  • Investigations of laminated glass and laminated safety glass with polymeric intermediate layers

Development Support

  • Accompaniment for the (further) development and optimization of safety glazing (throw obstructing, burst obstructing, lead obstructing, explosive effect obstructing, hurricane-glazing)
  • Accompaniment for the (further) development and optimization of multifunctional glazing (heat insulation, sun protection, noise insulation, safety and/or special functions) 
  • Accompaniment for general building supervisory admissions or approvals in individual cases


  • Membran constructed flat roofs
  • Evaluation of condition and processing of films made of PIB, PVC
  • film compatibilities
  • Adhesive suitability PV mounting: friction coefficient determination, material compatibilities
  • damage analysis

  • Tile roofs
  • Fracture analysis
  • Delaboration of rechargeable battery packs and batteries
  • Overload analyses
  • Material analyses and element composition

  • Metal roofs
  • Titanium zinc, copper, aluminum
  • Backside corrosion
  • Rear ventilation requirement
  • Coatings

  • Bitumen sheets
  • Craquelure
  • Bitumen analysis outer & lower layer
  • Tile insert
  • Suitable as underlay membrane?

  • Thermography
  • Thermal insulation leakages in roof & facade

  • Fibre insulation materials
  • Bonding degree of mineral wool
  • Compressive strength
  • Degradation due to water ingress

  • Step-resistant PU insulation
  • Pressure test
  • Cell gas analysis
  • Cell anisotropy: standing vs. lying

  • Underlays
  • Diffusivity
  • Water impermeability
  • Influence of ageing and pollution

  • Fibre cement boards
  • Breaking strength
  • Water impermeability
  • Hail damage

Examples for testing standards

  • DIN EN 12311 membranes for waterproofing - Determination of the tensile-elongation behaviour - Part 2: Plastic and elastomeric membranes for roof waterproofing
  • DIN EN 1849-1 Determination of thickness and mass per unit area - Part 1: Bitumen sheeting for roof waterproofing
  • DIN EN 12310-1 Waterproofing membranes - Part 1: Bitumen membranes for roof waterproofing; Determination of tear resistance
  • DIN EN 1607 Thermal insulation products for building - Determination of tensile strength perpendicular to the panel plane
  • DIN EN 1288-1 Glass in building - Determination of the flexural strength of glass - Part 1: Fundamentals of glass testing
  • DIN EN 12600 Glass in building -Pendulum impact test - Procedure for impact testing and classification of flat glass

Society for Materials Testing
Ensuring quality | Accompanying development | Analyzing damage | Passing on knowledge

GWP Gesellschaft für Werkstoffprüfung mbH
Georg-Wimmer-Ring 25
85604 Zorneding/München

Tel. +49 8106 994110
Fax +49 8106 994111

Handelsregister München
HRB 53245
USt.-IdNr. DE131179893

General Manager
Dr. Julius Nickl