Introduction
Acoustic
Effective sound insulation is also an essential requirement where commercial or industrial operations generate noise at levels, which could be harmful to the health or efficiency of the building occupants, or present an environmental nuisance.
Rain Noise
Impact noise from rain must be considered at an early part in the roof design, due to the fact that this can significantly increase the indoor noise level. Approved Document E –Resistance to the passage of sound, 2004 Addition, requires the construction of new school buildings to meet appropriate acoustic standards. Building Bulletin 93 outlines the methods of compliance. This includes a requirement to minimise the noise of rainfall on lightweight roofs and whilst no limit is set, methods of control must be included and justified to Building Control.
BREEAM Schools 2006
The Building Research Establishment Environmental Assessment Method (BREEAM) Under Health and Wellbeing, Acoustic Performance (HW17), stipulates that credits will be awarded for new build and refurbishment projects where the indoor ambient noise levels (defined in table 1.1, BB93) during ‘heavy’ rainfall are exceeded by no more than 20dB in the design calculations. For lightweight flat roof constructions, this most onerous requirement may be achieved by a combination of Hardrock Dual Density roofing boards, Rockfon acoustic ceilings and Rockwool Flexi overlay insulation.
The control of noise pollution is an ever-increasing problem. The solution tends to be specific to each building and is dependent on the type and source of the noise. Find out more with Rockwool SoundPro range.
