ACOUSTIC DOORSETS APPROVED NOISE REDUCING DOORSETS FOR CLASSROOMS, MUSIC ROOMS, SECURITY ROOMS -TO BS EN ISO 140-3
Many buildings now require specific rating to prevent the transmission of noise from one are to another. These uses may be school music room or Recording Studios. However more recently, tighter regulatory Building Standard requirements have been introduced for example in Apartment Entrance doors in complexes or School Classrooms off corridors.
All Acoustic door sets produced by Brystewood (BrySound (TM)) across all ratings and apertures are backed up with in date product certification to British Standard BSEN ISO 140-3. Whilst not proof of onsite performance, it is a method of comparison of known regularised performance across manufacturers. Items like computer access walls, party wall construction and threshold gaps can all have a devastating reduction in overall performance.
Sound is transmitted in two ways through areas
In normal use 98% of rating required are 35dB(rw) or less these can be accomplished by timber based doorsets. Above 35(dB) (with the exception of very larger High performance glazing vision panels) products become composite and involve a variety of materials ait gaps and deals to reduce material resonances. Doors over 35d(rw) start to become more expensive as materials and glazing become more complex.
A common mistake is to specify the same decibel rating to a doorsets as that required in a party wall ( i.e. breezeblock or brick cavity) exemptions exist for this and the average of the whole area of the wall is taken with the doorset as a proportion.
By manufacturing all the doorset in house we can be sure of compliance and quality control across all the sectors necessary to build up a complex doorset e.g.
Brystewood can provided fully certified Test Certification to BSEN ISO 140-3 for a variety of cores from Solid Laminated Timber Core to Particle board and composite cores the following weighted ratings:
With the appropriate seals most of these Acoustic Doors can also have a fire rating.