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Exteriors


BauderROCK


noise reduction, and sound absorption within a building. This insulation is suitable for all flat roofs utilising single ply or bitumen membranes in a warm roof construction. Mineral fibre insulation is produced


through spinning molten rock to create a mass of fine, intertwined fibres and pressed into boards. The insulation is produced as flat board, trapezoidal infills or tapered to create falls on the roof. BauderROCK is particularly beneficial


where projects need to deliver a high level of sound diminution for the building occupants. Addressing the acoustic performance of a flat roof early in the design process is key in ensuring an effective solution. The three considerations in acoustic design are airborne sound, rain noise intensity and sound absorption.


Airborne sound Airborne sound, such as road, rail and air traffic, and surrounding industrial operations, is transferred from a building exterior envelope into the building interior. The BauderROCK mineral wool insulation significantly reduces noise transmitted through the roof by 47-48dB.


Noise Reduction and Sound Absorption B


auderROCK insulation within a water- proofing system provides exceptional benefits for airborne sound and rain


Rain noise intensity Rain noise reduction is a separate consideration, relating to the impact rainfall can have on the indoor noise levels. The BauderROCK predicted Rain Noise Intensity reduction measures between -52.5dB and -52.0dB (235mm and 255mm), making it a suitable choice to meet the acoustic requirements in all room spaces in educational and healthcare buildings.


Sound absorption Noise created from within a building requires a sound absorption solution. Reducing this noise level is especially crucial in buildings such as sports halls and manufacturing plants where there is often a great deal of noise generated from within the building. BauderROCK Acoustic Infill provides high performance sound absorption when utilised with perforated metal decks. Bespoke infill trapezoidal ‘wedges’ are cut to fit the specified roof deck. The combination of optimised density, fibre direction and excellent fit provides a significant improvement in sound absorption when used together with BauderROCK insulation on perforated metal roof decking constructions. A BauderROCK system of 235mm offers


a U value of 0.15 W/m²K and 255mm a U value of 0.16 W/m²K. By incorporating the air and vapour control layer (AVCL), we are able to deliver a single system that meets both the acoustic and thermal requirements of current building regulations.


Key features • Increased acoustic performance • Non-combustible • Zero GWP rating • Zero ODP rating • Multi-purpose facing


0845 271 8800 www.bauder.co.uk


1 www.buildingconstructiondesign.co.uk 2


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