When it is needed

  • defects in windows, doors, kitchens and built-in furniture
  • a dispute about product quality after installation
  • property damage after renovation, water damage or fire
  • materials used do not conform to the contract or estimate

What is examined

  • properties and markings of the product or material
  • storage, delivery, installation and use conditions
  • quality of construction and finishing work
  • the nature and location of damage

Result

Coordinated conclusions from the construction and commodity fields, distinguishing the causes of the defect.

Limitation

The expert team, methods and feasibility of reaching a conclusion are determined after reviewing the materials. A court-appointed examination is conducted within the scope of the relevant order or ruling.

How product properties and installation quality are connected

The study begins by identifying the specific product and its installation location. For a window, door assembly or built-in furniture, the markings, dimensions, completeness and contract terms must be related to the object actually inspected. A photograph of a defect without an overall view and its location in the room makes this verification difficult.

The next step is to distinguish features of the product itself from those that may have arisen during delivery, fitting, fastening or subsequent use. For example, a visible gap is described together with the product's geometry and the condition of the base and junction. Appearance alone does not establish the stage at which the deviation arose.

What to prepare for both fields

  • The product specification, technical passport, instructions and details of the supplied set.
  • The installation contract, working drawings, completion records and list of work performed.
  • Photos taken before installation, during the work and when the defect was discovered.
  • Correspondence about complaints, rework, repairs and conditions of use.
  • Information about parts already replaced or removed.

A shared list of objects allows participants to use the same identifiers for rooms, products and damage. The report should make it possible to trace which properties were examined using commodity-science methods, which construction circumstances were checked and which results support the joint conclusion. Where data is insufficient, the unconfirmed link in this chain is identified.

Separate questions are useful for the assignment: what deviations the product has; what defects were found in the installation junction; how they are related and what action is needed to remedy the established defect. The contractual party's liability is a matter of legal assessment.