Thermal Insulation Materials

Why You Should Choose Kiwa GmbH for Testing:

Kiwa GmbH, based in Berlin, is your center of excellence with extensive expertise in materials testing. As an accredited testing laboratory and notified body, we offer a comprehensive range of services—from standard material testing and testing in our own fire and acoustics laboratories, to various certification services, to the assessment of environmental impacts (e.g., Environmental Product Declarations/EPDs) by our in-house sustainability department, the Kiwa Ecobility Experts. In addition, as a Technical Assessment Body (TAB) at the European level, we are authorized to issue European Technical Assessments (ETAs) and TAB reports. What sets us apart: short and direct lines of communication, as well as fast project turnaround times.

Our Services at a Glance

We are notified for a wide range of insulation product standards and can certify your products accordingly. We are accredited beyond the minimum requirements for many insulation tests and evaluate not only thermal conductivity (EN 12667/12664), compressive strength (EN 826), water absorption (EN 1609 / 12087), water vapor permeability (EN 12086)—and much more.

Measurements of Thermal Conductivity

Tests in accordance with
DIN EN 12667 for thermal insulation materials and
DIN EN 12664 for other building materials
Tests on
solid materials, bulk materials, composite materials,
inorganic and organic systems
Test specimen dimensions
for λ 0.1 W/(m·K): (150 x 150) mm²
for λ < 0.1 W/(m·K): (500 x 500) mm²
We can cut specimens to size
Test specimen thickness
Recommendation: 50–80 mm (4–120 mm possible)
Number of test specimens
1 specimen, due to high reproducibility
(unless otherwise specified in product standards)
Test duration
< 24 hours