Building materials

The KIWA-UNI mark certifies the conformity of plastic and metal components in contact with water and gas to national and international standards.

Kiwa carries out all typical tests on plastics and rubber products which are used for gas, heat and water distribution and installation. Tests can be performed on pipes, fittings, seals, the piping system (fitness for purpose) and the resins themselves.

Plastic and rubber in gas appliances | Testing-certification

Polymer resins and raw materials are often used for the extrusion of pipes or for the moulding of fittings and valves. Resins can be either for the strength bearing properties or for a specific functional purpose like barrier properties, adhesive tie layers or filling materials for stiffness of the product.

Building and glazing sealants | Accredited testing - certification

EMAS certification with Kiwa: reduce your environmental impacts, engage employees and boost your reputation.

International Railway Industry Standard (IRIS) Certification: manage your railway-specific quality processes, compete in a demanding market & boost your profit.

EN 1090-1 certification with Kiwa: demonstrate your compliance with EU regulations, highlight the quality of your components and get ready to access the European market with CE marking.

This evaluation guideline specifies the requirements for water reducing valves and combination water pressure reducing valves of nominal size DN 8 to DN 100 for inlet pressures that not exceed 1.600 kPa and a temperature that does not exceed 30°C ...

Your local Kiwa office also has extensive knowledge of international standards and market developments to offer various services regarding the certification of your products in various countries.

Gypsum products certification with Kiwa: ensure and improve your performance, meet customers’ needs and prove the quality of your products and systems. With certified products, you are assured of the use of products that meet minimum product performances and quality requirements.

In Europe, the most important regulation for liquid applied membranes is the EAD 030350-00-0402 (formerly ETAG 005). Kiwa tests your products and approves your products for the European Market.

Kiwa carries out tests according to EN 1504-4. Identification and proof of performance of building adhesives; CE marking and certification.

Kiwa tests, inspects and certifies reinforced steel, reinforcing bars, coils and meshes, lattice girders, de-coiled reinforcing coils.

Certification of Internal and external Wall and Ceiling finishes with Kiwa: ensure and improve your performance, meet customers’ needs and prove quality of your products and systems.

A Kiwa test provides you with a certificate with a product certification scheme for the production and application of thermal insulation materials for facade structures with stone-like hollow walls or with panels.

Tests at Kiwa simulate the real conditions on a construction site and use all materials to be tested, such as frames, glass, sealing materials, gaskets and anchoring devices. Thermal transmittance DIN EN 12412-2. Sound measurement according to DIN EN 20140.

Kiwa carries out testing in the field of construction glass  for heat protection and thermal insulation in buildings in accordance with EN 1279-6.

Kiwa offers a wide scope of material related consultancy services for polymers and elastomers. We support product developments, market introductions, materials selections, material evaluations, trouble-shooting, failure analysis or maintenance and replacement decisions.

Kiwa CMT | We test coal tar.