When the architect first approached ATSPACE, we discussed the needs of the project. They explained the existing building was 7 storeys high and they’d received planning permission for an airspace development to add a new storey of an additional 4 new builds. Airspace developments are becoming increasingly popular; however, they do pose serious challenges when it comes to the sound insulation regulations.
Our acoustician looked at the plans and suggested modelling of the party floors where the new and existing meet, and also modelling of the party walls between the 4 apartments. When we take on sound insulation design, the acoustician models the proposed specification and offers guidance, suggestions, and recommendations working with the limitations and objectives of the project.
The initial modelling showed the proposed building specification would most likely fail the final Part E testing. ATSPACE offered several suggestions and the client listed them in order of preference. The new proposed specification was estimated to fly through sound insulation testing. It is important to note that whilst we can provide sound insulation design, it will never be a guaranteed pass on the final test. Quality of materials and craftsmanship play a vital role in the process. A good metaphor to explain this – You could be given a Gordon Ramsay recipe, the best ingredients in the world, but if you’re not a good cook, it won’t turn out like Gordon Ramsay’s.
After 9 months of construction, the client got in contact and discussed the final sound testing. As there were party walls and floors, they would need a full set of sound tests which includes 2 airborne wall tests, 2 airborne floor tests and 2 impact floor tests. The engineer arrived at the site to find the development between 2nd fix and practical completion – the perfect stage for testing. There were no soft furnishings and flooring hadn’t been laid as yet, exactly what our sound insulation testing checklist asks for. The test itself was carried out and the certificate sent the following morning.
The client was satisfied as the sound testing had passed with flying colours, ready for building regulation sign off for Part E – Resistance to the passage of sound.