Acoustic Door Seals
I've heard about Document E - but how does it relate to doors?
The revisions to Approved Document E to the Building Regulations for England and Wales came into effect on 1 July 2003. From that date, all planning applications requiring Building Control approval, and work carried out under Building Notice procedures, has to comply with the revised regulations.
Much of Document E relates to the acoustic performance of floors, ceilings and walls. However, for the first time, the acoustic performance of door assemblies in a number of situations is also specifically detailed.
Requirement E1 states that: “Dwelling-houses, flats and rooms for residential purposes, shall be designed and constructed in such a way that they provide reasonable resistance to sound from other parts of the same building and from adjoining buildings.”
Document E also goes on to give specific guidance about the acoustic performance of doorsets: “Ensure that any door has good perimeter sealing (including the threshold where practical), and a minimum mass per unit area of 25kg/m2 or a minimum sound reduction index of 29dB Rw (measured according to BS EN ISO 140-3:1995 and rated according to BS EN ISO 717-1:1997). The door should also satisfy the Requirements of Building Regulation Part B – Fire safety.”
Requirement E4 covers acoustic conditions in schools, and incorporates Building Bulletin 93 as the recommended way of meeting the requirements. BB93 requires an acoustic performance for doorsets of 30dB Rw, and for music rooms, 35dB Rw.
Lorient's recommended sealing systems are specifically designed to enable these requirements to be met. It is important to remember that, while Document E says the threshold should be sealed “where practical”, extensive testing has proven that it is essential to do this in order to achieve the required level of acoustic performance.
For more information please refer to our Acoustic Sealing Systems page, and download our Acoustic Sealing Systems for Door Assemblies brochure.