IKO Rubershield Evo vapour permeable membranes, often referred to as breather membranes, are classed as Low Resistance (LR) membranes for warm unventilated, cold ventilated, and cold unventilated pitched roof constructions.
They are also suitable for use in timber frame wall constructions with an outer leaf of masonry, weatherboarding, or tile/slate cladding. By allowing for the passage of vapour, they help to minimise the risk of condensation whilst maintaining a secondary barrier to the elements.
IKO Rubershield Evo vapour permeable membranes conform to BS 5534:2014+A2:2018 and have BBA certification to support their use within fully supported or unsupported tiled or slated roofing systems, as well as timber frame wall constructions.
These membranes are suitable for UK Geographical Wind Zones 1 to 2 with a ≤ 345mm batten gauge (battened lap) and Wind Zones 1 to 5 with a ≤ 250mm batten gauge (battened lap).
In addition, they are suitable for Wind Zones 1 to 5 with a supported application, as specified within BS5534:2014 – membranes tested to Zone 1 at equal to or less than 250mm batten gauge are suitable for use in all Wind Zones at any batten gauge when fully supported by a nominally airtight sheet sarking board, i.e. plywood, OSB, or rigid insulation board.
The range also consists of the following products: IKO Rubershield Evo Plus, IKO Rubershield Evo Pro, IKO Rubershield Evo Ultra, and IKO Rubershield Evo Apex.
Our Technical Data Sheet (TDS) should help you choose the correct Low Resistance (LR) vapour permeable membranes and accompanying system components to complete your projects.
