BS EN 13169:2009 pdf download – Thermal insulation products for buildings — Factory made products of expanded perlite (EPB) — Specification
4 Requirements
4.1 General Product properties shall be assessed in accordance with clause 5. To comply with this standard, products shall meet the requirements of 4.2, and the requirements of 4.3 as appropriate. NOTE Information on additional properties is given in Annex E. One test result on a product property is the average of the measured values on the number of test specimens given in Table 6.
4.2 For all applications
4.2.1 Thermal resistance and thermal conductivity Thermal resistance and thermal conductivity shall be based upon measurements carried out in accordance with EN 12667 or EN 12939 for thick products. The thermal resistance and thermal conductivity shall be determined in accordance with Annex A and Annex C, and declared by the manufacturer according to the following:
the reference mean temperature shall be 10 °C;
the measured values shall be expressed with three significant figures;
for products of uniform thickness, the thermal resistance, R D , shall always be declared. The thermal conductivity, λ D , shall be declared where possible. Where appropriate, for products of non-uniform thickness (e.g. for sloped and tapered products) only the thermal conductivity, λ D , shall be declared.
the declared thermal resistance, R D , and thermal conductivity, λ D , shall be given as limit values representing at least 90 % of the production, determined with a confidence level of 90 %;
the value of thermal conductivity, λ 90/90 , shall be rounded upwards to the nearest 0,001 W/(m⋅K) and declared as λ D in levels with steps of 0,001 W/(m⋅K);  the declared thermal resistance, R D , shall be calculated from the nominal thickness, d N , and the corresponding thermal conductivity, λ 90/90 ;
the value of thermal resistance, R 90/90 , when calculated from the nominal thickness, d N , and the corresponding thermal conductivity, λ 90/90 , shall be rounded downwards to the nearest 0,05 m 2 ⋅K/W, and declared as R D in levels with steps of 0,05 m 2 ⋅K/W;  the value of R 90/90 , for those products for which only thermal resistance is measured directly, shall be rounded downwards to the nearest 0,05 m 2 K/W, and declared as R D in levels with steps of 0,05 m 2 ⋅K/W. 4.2.2 Length and width Length, l, and width, b, shall be determined in accordance with EN 822. No test result shall deviate from the nominal values by more than the following: ± 3 mm for length and width not exceeding 1 200 mm;
4.2.3 Thickness
Thickness, d, shall be determined in accordance with EN 823, using a load equal to 250 Pa. No test result shall deviate from the nominal thickness, d N , by more than the corresponding tolerances given in Table 1.
This test shall not be performed when the tests described in D.2.7 are used.
4.2.4 Squareness Squareness shall be determined in accordance with EN 824. The deviation from squareness on length and width, S b , shall not exceed 3 mm/m.
4.2.5 Flatness Flatness shall be determined in accordance with EN 825. The deviation from flatness, S max , shall not exceed the following: 3 mm for length and width not exceeding 1 200 mm; 5 mm for length and width exceeding 1 200 mm.
4.2.6 Bending strength Bending strength, σ b , shall be determined in accordance with EN 12089. For handling purpose, the bending strength of boards shall not be less than 250 kPa. NOTE The requirement for handling applies to individual boards. In the case of multi-layered boards, it may be assumed that the requirement is satisfied when each of the individual layers fulfills this requirement.
4.2.7 Dimensional stability under specified temperature and humidity conditions Dimensional stability under specified humidity conditions shall be determined in accordance with EN 1604. The test shall be carried out for 48 h at (23 ± 2) °C and (90 ± 5) % relative humidity. The relative changes in length, ∆ ε l , and width, ∆ ε b , shall not exceed 0,5 %. The relative changes in thickness, ∆ ε d , shall not exceed 1 %. 4.2.8 Reaction to fire Reaction to fire classification (Euroclasses) shall be determined in accordance with EN 13501-1.