R1 R&R Sept '16 52 cc

Building Envelope
Sika provides a rapid decking solution at
Potteries car park
At the intu Potteries shopping centre in Stoke-on-Trent, the
asphalt deck on the annex level of the car park was showing
signs of ageing and weathering. With removal and
replacement costly and time-consuming, Sikafloor®-32 Pronto deck
system from Sika was laid directly onto the existing asphalt to create
a watertight, non-slip deck whilst minimising waste and returning
the car park to full use within the shortest time possible.
With an annual footfall of over 12 million shoppers, intu Potteries is
the largest shopping centre in Staffordshire and South Cheshire and
one of the UK’s top 35 retail destinations. As part of a £20 million
regeneration project by Intu Properties and main contractor Wates
Construction, the site has been extended and remodelled to include
seven restaurants and a nine screen cinema – attracting thousands
more visitors and car park users every week.
Following a successful trial to demonstrate its bond to the substrate,
approximately 2,000m2 of Sikafloor®-32 Pronto was applied over the
existing asphalt to provide a slip resistant and hard wearing
waterproof surface. Utilising the fast setting properties of Sikafloor®-
32 Pronto decking system also ensured works could be completed
quickly, with minimal disruption and eliminating the need for material
to go to landfill. Offering excellent mechanical and chemical
resistance, Sikafloor®-32 Pronto has been fully tested to meet the
highest crack bridging standards available on the market – including
Marmox Thermoblock specified for low energy
extension to Kent school
The construction of a new extension
to the teaching facilities at Glebe
School in West Wickham, Kent, has
featured the use of 140 mm wide
Thermoblock units manufactured by
Marmox Limited, specified to carry the main
structural envelope of the two-storey
building. The incorporation of
Thermoblocks at the wall-floor junction
results in the virtual elimination of the heat
loss at this cold bridge. The new building
will provide the secondary school with a
number of facilities including an art-room,
additional classrooms and new washrooms.
Furthermore, as is common now in the
education sector, the extension has been
designed to achieve very good standards of
energy consumption through high levels of
insulation.
Marmox Thermoblocks are ideally suited to
this ‘Fabric First’ approach and are regularly
used to address the problem of perimeter
heat loss at both ground and upper floor
levels in either timber frame or more
traditional masonry construction.
Romford based Lakehouse was the main
contractor for the work and the 270
Thermoblock units – each measuring 140 x
600 x 65 mm – were supplied through
Jewson Builders Merchant. In addition, the
branch supplied tubes of Marmox Multibond
adhesive, which were used for jointing the
interlocking Thermoblocks. Thermoblock,
which has a compressive strength of
9N/mm2 was specified for this demanding
application of footing the supporting walls.
Thermoblock then serves to greatly extend
the heat flow path for the critical floor/wall
junction throughout the life of the building.
The 600 mm long units incorporate mini
columns of high strength concrete to support
the load of the wall above, while the low
lambda value insulation effectively lengthens
the path for cold-bridging. They are laid just
using ordinary bricklayer’s mortar and then
by sealing the interlocking ends together with
Marmox Multibond, they create a permanent
waterproof seal onto which the block or brick
wall is then build on.
BS EN1062-7 Method B, which tests the complete system through
20,000 crack cycles up to 0.5mm @ -20 oc. This demonstrates the
system’s ability to protect against water penetrating through the
membrane and ensures the future integrity of the deck.
With a comprehensive range of car park decking and full concrete
repairs systems, Sika provides a variety of solutions designed to meet
the harsh conditions that car parks are subject to, and provide
durability, cost effectiveness and an excellent finish. Following the
successful renovation of the intu Potteries annex roof top car park
area, Sika and their specialist contracting partner, have delivered a
bright, aesthetically appealing and safe car parking area.
www.sika.co.uk.
EMAIL: sales@marmox.co.uk
WEB: www.marmox.co.uk
24 Refurb retrofit
magazine
Sep/Oct 2016 R1