Schöck makes thermally efficient
balcony retrofit a reality
The replacement of thermally inefficient
balconies, or the retrofitting of balconies
on both old housing stock and office-to-
residential conversion is in demand. The
challenge though is to meet the same
thermal insulation standards as new build.
One of the most effective solutions is the
Schöck Isokorb. A load-bearing structural
thermal break that allows cantilevered steel
balconies to be connected to the reinforced
concrete slab. With its 120mm insulation
thickness, the Isokorb minimises thermal
bridges at concrete-to-steel cantilever
connections. It is a ready-to-install
component and residents can remain in the
building during external renovation, with no
damage risk to internal finishes.
Installation utilses a template
Positional drill holes are marked with a
template on the building face. Holes are
then drilled into the concrete slab, adhesive
injected and the load-bearing reinforcing
rods slipped into position and anchored
by means of the pre-injected adhesive.
Structural screed is poured into a pocket
between the Isokorb and the concrete
slab, ensuring a perfect contact between
the two structural elements. Once the
screed has cured, the structure is ready
for the new balcony to be connected.
The Schöck design team is on hand to
provide full technical support, as product
selection for renovation is subject to certain
restrictions and depends on specific project
requirements and the building structure.
Dependable and verifiable performance
The Isokorb range meets full compliance
with the relevant UK building regulations
and offers BBA Certification and LABC
Registration. When incorporated into
residential buildings, the required fRsi value
(the temperature factor used to indicate
condensation risk that must be equal
to or greater than 0.75) is comfortably
met. There is also full compliance with
the Government Standard Assessment
Procedure, SAP 2012, concerning CO2
emissions from buildings and respectively
heat losses through non-repeating thermal
bridges. In addition, the product is certified
as an “Energy saving component” by the
Passivhaus Institute in Darmstadt, Germany
Currently one of the largest office-to-
residentai schemes
Atrium Point, at Sudbury, in North West
London, was previously the London
headquarters of the international contractor
M.W Kellogg. The existing office buildings
are being sustainably refurbished, with solar
panels, air source pumps and heat recovery
units. The development will realise a
mix of 290 studio, one and two bedroom
apartments – and many of the units benefit
from a retrofitted cantilevered steel balcony.
For a free copy of the Schöck Thermal
Bridging Guide and / or the Thermal
Bridging Solutions brochure – contact the
company on 01865 290 890 or visit
www.schoeck.co.uk
www.refurbandrestore.co.uk - 19