SCHÖCK WRAPPED
PARAPETS SOLUTION FOR
GRADE 1 LISTED REBUILD
At the Regent’s Park end of London’s Portland Place, passers-by
have been astonished to discover that the iconic Park Crescent
West, a Grade 1 listed residential Regency terrace built by architect
John Nash, is no more. However, all is not as it seems. The original
Nash terrace, completed in 1821, was badly damaged during the
Second World War and restored in the 1960s. The work though
was considered flawed and not true to the original. As a result
this is now a rare case where the demolition of the Grade I listed
terrace ‘and its replacement with a more scholarly replica would
preserve and enhance rather than obliterate its significance’.
Offering 76 luxury apartments, with nine mews houses at the rear
and renamed Regent’s Crescent, the project will see the terrace
rebuilt with new brickwork and stucco to represent the original
Nash design.
A load-bearing modular thermal insulation element from the
Isokorb range is also utilised within the lightweight steel roof
construction. This is for connecting cantilevered steel girders to
steel structures. It can be used to minimise the risk of therrmal
bridging in new construction or renovation projects involving
penetrating support structures such as canopy roofs, frame system
crossbars or balconies.
TOTALLY VERIFIABLE PERFORMANCE
The Schöck product types used at Regent’s Crescent are for
wrapped parapets and steel-to-steel connectivity, but the
comprehensive Isokorb range also offers solutions for concrete-
to-steel situations and concrete-to-concrete. The range complies
with the Government Standard Assessment Procedure, SAP 2012,
concerning CO2 emissions from buildings and respectively heat
losses through non-repeating thermal bridges. Products meet full
compliance with the relevant UK building regulations, have NHBC
approval and offer LABC Registration. There is also the security of
independent BBA Certification.
Contact Schöck on 01865 290 890; or visit the website at www.
schoeck.co.uk for a free copy of the Schöck Thermal Bridging
Guide; the Schöck Specifiers Guide and to view the full range of
downloadable software.
AVOIDANCE OF THERMAL BRIDGING IS CRITICAL
The construction comprises a reinforced concrete frame with
concrete columns, horizontal flat slabs and a lightweight steel
roof. The project is to a very high specification and great attention
has been paid to avoiding the risk of thermal bridging problems.
Prevention along the parapets is critical, because as with balconies,
parapets can allow conductive materials to transfer energy through
the thermal barrier. Often the method of insulating parapets and
parapet walls is to wrap the perimeter with an insulation barrier.
However, the Schöck Isokorb used here offers a solution that
is both more cost-effective and more thermally efficient than
conventional wrapped parapets. Its 120mm insulation thickness
results in low psi-values and therefore significantly reduces heat
loss – and there is no wrapping required.
The Isokorb solution
does not require maintenance and there is no risk of expensive
restoration due to waterproofing problems. It also allows greater
freedom of design and there is no risk of any additional thermal
bridging through balustrade fixings.