The need for a proven
acoustic solution, and a high ambition for the aesthetics, has led to an
acoustic system from Sto being specified for a £7.5 million museum
redevelopment project in London.
The StoSilent Distance
system has been installed in the Garden Museum, which is Britain's only museum covering the art,
history and design of gardens, located at the Church of St Mary-at-Lambeth.
“We specified the StoSilent Distance system for
a number of reasons,” explains Alun Jones of Dow Jones Architects. “The
building work involved the creation of a cluster
of copper-clad pavilions around a cloistered garden area.
"These house two
new educational spaces and a cafeteria, and they are connected by a number of
covered walkways. These spaces feature concrete floors and floor-to-ceiling
glazing, so in order to achieve an acoustic environment with a reverberation time
of less than 0.8 seconds we used a Sto seamless acoustic ceiling.
"Having used the
Sto solution on a previous project we were confident that it would be perfect
for the museum, and Sto worked closely with us to create a balanced acoustic
system which would satisfy all the different requirements.”
The StoSilent Distance system provides a modern,
clean, monolithic alternative to the standard but limited design options
associated with exposed grid and tile systems, or boards with multi-facetted
holes or slots. It provides positive, balanced acoustics within buildings,
helping architects and designers achieve clean and uncluttered lines. It
is ideal for situations where, as with the Garden Museum, these surfaces must
be suspended to accommodate services, and where the ceilings were being used as
negative plenums for air extraction and movement.
The StoSilent Distance system utilises its own Sto
SC400 metal framework, and StoSilent Distance 110 boards. The boards are
manufactured from 96% recycled glass and can be integrated with lighting,
grills and other M&E considerations. StoSilent boards are permeable, and
have a honeycomb-like structure which allows noise and sound to dissipate
through a void space and so balance the acoustic environment.
StoSilent Distance is a lightweight system, and unlike
exposed grid and soft tile alternatives, the boards will not sag or delaminate.
It can be used to create many different design features, including seamless,
inclined planes or curves, or sharp and consistent joints. The benefit to the
architects and end user is that the system can also be repaired and
re-furbished throughout the lifetime of the building without greatly negating
the value of the acoustics, wherever the system has been installed.
For
aesthetic reasons, the architects were also keen to use the same monolithic
ceiling throughout each of the new areas at the Museum, and wanted this to
feature a spray-applied finish with a finely-textured surface. “The StoSilent
Décor M finish was the perfect solution for this,” adds Sto’s Technical
Consultant for Acoustics, Mike Wallace. “It creates a sound-permeable
decorative coating which can
be tinted to match a wide range of shades from the StoColor system, and RAL colours can also be achieved making it a very versatile
solution.”
“As there were a number of varying roof
spaces included in the different areas, there was not one standard installation
approach that would suit them all,” adds Lucien Ionce of Intercoustic,
an authorized Sto acoustic installer. “Fortunately, the StoSilent Distance
system is extremely flexible in terms of installation, and this gave us plenty
of freedom to meet the various day-to-day challenges which arose during the
installation process.”
The museum is housed in the Church of St Mary-at-Lambeth, next
to the Archbishop of Canterbury’s palace, alongside the River Thames. After
being disused for many years, the church was saved from demolition in 1977,
after which it was converted into the UK’s first museum dedicated to the
history of gardening.
