ISO 24336:2005 specifies a test method for the determination of thickness swelling of laminate floor-covering elements after partial immersion in water. The testing is destructive and is mainly intended to evaluate the behaviour of the laminate floor-covering element in contact with water. Possible pre-attached soft backing material, sub-layers or any other material integrated at the underside of the floor-covering element are not included in the test and should therefore be removed before testing.