Laboratory · Thermal insulation (EPS / XPS)
Insulation boards are bought by class: EPS 80, EPS 100, EPS 150. The class should mean a real density and compressive strength, because both affect how the board performs under render, floors and roofs.
All four tests are accredited under ISO/IEC 17025 (DPA certificate LT 069).
4accredited tests on this page
ISO/IEC 17025DPA certificate LT 069, valid to 07.06.2029
EN · ISO · ASTMcurrent editions of the referenced standards
In our laboratoryVrrin, Durrës–Tirana motorway, km 29
When you need these tests
- Checking that delivered boards match the class on the label.
- ETICS façades, floors and inverted roofs where compressive strength matters.
- Producers’ factory production control.
Accredited tests and standards
Thermal insulation boards
| Test | What it tells you | Range | Standard | Where |
|---|---|---|---|---|
| Compressive stress at 10% deformation | Compressive stress at 10% deformation (e.g. EPS 100, EPS 150) | 30–500 kPa | BS EN ISO 29469:2022 | Laboratory |
| Apparent density | Density, which identifies the EPS/XPS class | 10–40 kg/m³ | BS EN 1602:2013 | Laboratory |
| Water absorption | Water absorption by immersion | ≥ 0.05 kg/m² | BS EN ISO 29767:2019 | Laboratory |
| Dimensions (L × W × H) | Length, width, thickness, squareness and flatness of boards | — | BS EN ISO 29465:2022; BS EN ISO 29466:2022; BS EN 824:2013; BS EN ISO 29468:2022 | Laboratory |
Sampling and what to send us
- At least three whole boards from the same batch, with the label.
What your test report contains
- A unique report number, the accredited laboratory’s details and the ISO/IEC 17025 accreditation mark for accredited tests.
- Sample identification, sampling details and the condition of the sample on receipt.
- The standard and method used for every test, with any deviation stated.
- Results with units, and comparison with the specified limits when you give them to us.
- Signature of the authorised laboratory staff.
Frequently asked questions
Is density enough to identify the EPS class?
No. The class is defined by compressive stress at 10% deformation; density is a useful check alongside it.
Related testing
Need these tests for your project?
Tell us the material, the quantity of samples and the specification you are working to. We’ll confirm the tests, the sampling and the price.