Full-fill Full Facts
Full-fill glass mineral wool solutions can provide substantial cost savings per plot when compared to partial fill solutions.
Insulating with full-fill glass mineral wool can save up to 50% compared to some partial fill solutions.
This can equate to up to £535.00 per plot, which is significant, especially when building multiple plots.
Costings based on SPONS Architects and Builders Price Book 2011. Insulation costs based on 1000m2 of product available from a national insulation distributor. Target U-value of 0.25 W/m2K.
Full-fill solutions are the most commonly used in the market with approximately 55% of new build cavity walls using full-fill solutions, and 85% of all residential cavity walls when including refurbishment.*
Those using full-fill solutions are making the savings available, whilst still achieving the thermal performance required to meet compliance with Building Regulations and provide thermally efficient buildings.
* Building Insulation Market,Construction Markets 2011
Fully filled cavities can deliver equivalent U-values to partially filled cavities.
Fully filling the cavity reduces the risk of reduced performance due to air movement as the cavity is filled and the products knit together to seal the joints.
For a free U-value calculation to find out which full-fill solution matches your partial fill option, call our Technical Advice and Support Centre now on 01744 766666
Earthwool DriTherm Cavity Slabs are BBA Certified for use in all exposure zones.
Even when building to NHBC standards, full-fill solutions can be used in all exposure zones - even "very severe" **.
**Dependent on surface finish - check the latest version of the NHBC Standards for full details
For full details please call our Technical Support Team on 01744 766666.
Earthwool DriTherm Cavity Slabs contain a water repellent additive to ensure that no liquid water is able to pass through the products and reach the inner leaf of masonry.
Tests by the British Board of Agrément confirm that they will not transmit moisture by capillary action across the cavity or from below damp proof course level.
Knauf Insulation are so confident about the performance of our products, we provide a 50 Year Guarantee on Earthwool DriTherm Cavity Slabs to cover thermal conductivity and resistance to the passage of water from the outer to the inner leaf.
Earthwool DriTherm Cavity Slabs are manufactured with ECOSE® Technology, a revolutionary, formaldehyde free binder technology, based on rapidly renewable materials instead of petro-based chemicals.
ECOSE Technology reduces embodied energy and delivers superior environmental sustainability compared to other mineral wools.
Earthwool DriTherm Cavity Slabs have Zero Global Warming Potential, Zero Ozone Depletion Potential, and have an A+ generic BRE Green Guide rating.
Earthwool DriTherm Cavity Slabs are non-combustible and classified as Euroclass A1 to BS EN ISO 13501-1 - the highest possible "Reaction to Fire" classification - compared to a D or E typically achieved by foam plastic insulation materials.