![]() EnergySaver therefore reduces the risk of condensation and allows natural drying out of the wall construction due to its ability to breathe.Moisture condensing from the air within Rockwool material is less than 0.02% by volume at 95% relative humidity.When calculating vapour diffusion through a structure, the vapour resistance of Rockwool is negligible and is usually considered to be the same as for air.In situations where Rockwool material is present both above and below the ground floor damp-proof course, it will not transmit ground water by capillary action. ![]() The Rockwool EnergySaver system is designed so that water will not cross the cavity by capillary action. Should water penetrate the outer leaf of the cavity wall, it will drain down between the wall surface and the injected filling. Water resistance EnergySaver repels water due to the presence of water repellent additives. HP EnergySaver blown cavity insulation is a completely inert, rot-proof material and does not encourage the growth of fungi, moulds and bacteria or offer sustenance to vermin.It will give effective protection for the lifetime of the building. EnergySaver has been proved in service for over 40 years in all types of climate and degrees of exposure.HP EnergySaver blown cavity insulation is a durable material.It is therefore ideal in circumstances where protection against spread of fire is required in addition to insulation. The melting point of Rockwool is above 1000☌.HP Energysaver blown cavity insulation achieves an A1 classification in accordance with BS EN 13501-1 and is therefore non-combustible as defined in UK and Ireland building regulations.We are happy to discuss the individual requirements of contractors and users considering returning Rockwool materials to our factory for recycling.BRE A+ rating Fire performance ![]() Rockwool Ltd is increasingly involved in recycling waste Rockwool material that may be generated during installation or at end of life disposal, and has a recycling scheme that is recognised by WRAP and the Environment Agency. Rockwool therefore complies with the relatively modest threshold of GWP<5 included in documents such as the Code for Sustainable Homes. Sustainability Relying on entrapped air for its thermal properties, Rockwool insulation does not contain (and has never contained) gases that have Ozone Depleting Potential (ODP) or Global Warming Potential (GWP). Always check with Rockwool that a supplier or installer is an approved installer, they will welcome this check.
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