Water Permeability – Test Method
A sample representative of the fire stopping or fire sealing product shall be used to prepare a blank penetration seal following the installation instructions of the manufacturer. If a splice is required to construct longer seals a single splice should be included in the test specimen.
The test specimen shall be conditioned in accordance with EN 13238.
The water leakage test apparatus shall consist of a container open both ends the base of which shall form a watertight seal against the test specimen. The container shall accommodate a specimen of minimum 1 m length and the intended width and sufficient part of the supporting construction.
The water leakage test apparatus shall be sealed to the test specimen using non-hardening sealants, pressure-sensitive tape or rubber gaskets with clamping devices.
Water, with a permanent dye, shall be placed in the water leakage test chamber. The water shall cover the penetration seal to a depth corresponding to the required pressure 23, which shall be maintained during the test.
The temperature of the test assembly shall be maintained within a range of (23 ± 5) °C.
A white indicating medium shall be placed immediately below the test specimen.
The test shall be continued until leakage is observed or a maximum of 72 hours.
Evaluation of the test results
The leakage of water through the penetration seal shall be noted by the presence of water or dye on the indicating media or droplets appear on the underside of the test assembly.
Recorded test data
The result is given as “water tight to x mm head of water” or “water tight to x Pa”.
The test report shall include the following:
A description of the assembly and materials of the linear joint seal under test, including drawings depicting geometry, exact size (length, width, and thickness), and location of the seal within the test assembly.
The relative humidity of the test assembly and linear joint seal materials, if applicable.
23 Requirement from a regulation or comparable specification