There are two options when dealing with the transmission of sound detailed in Part E of the building regulations as applied to multiple occupancy residential buildings.
One option is to use robust detail, a system that relies upon the use of pre-tested systems requiring no pre-completion testing. The other is to design a bespoke system which is tested post build and pre-completion. The tests must be completed before the units can be occupied. This second option allows the designer to choose whatever materials he wishes provided when tested it meets the requirements of the regulations. When selecting this option it is important to discuss the project detailing not only with a qualified acoustician but also with a technical team that has a wealth of experience in dealing with different resilient insulations and substrates.
Gypsol screeds have been used in apartment schemes the length and breadth of the country so our technical team have built a level of experience with screeded acoustic systems which is second to none.
This apartment scheme in Peterborough comprised 3 blocks of apartments each having 3 stories requiring a total of just over 3000 square meters of screed.
As the client was in control of the design and this was his first foray into this type of construction he called upon the expertise of our technical and specifications team in order to help him to decide the best route and the most cost effective design. He opted for pre-completion sound testing which allowed him to design the floors in such a way as to mitigate the costs of the testing.
Our technical and specification manager advised Gypsol Classic screed as the most cost effective and appropriate material and completed a NBS specification to include a resilient insulation and 40mm minimum of Gypsol Classic screed at a density 80kg/m2.
The design was approved by the acoustician and the Gypsol Classic screed ordered and installed by a trained and experienced local Gypsol screed specialist. The Gyspol Classic screed was installed in 4 pours of over 1000m2 per pour and one block being completed at each visit.
The client/Builder was delighted with the results especially with the speed of installation which allowed him to move quickly forward to the projects conclusion and market the properties ahead of his intended schedule.
Once complete, the floors were tested and found to exceed the requirements of Part E and once dried were covered with carpets and Ceramic tiles
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