September 2020

…and choose the right approach for
fitting unplanned lighter elements
Whilst planning for heavier elements is not only
good practice but crucial, it is simply not possible
to predict the fixing locations of every external
element. That is why there are other very effective
approaches which are equally uncompromising
and secure for lighter weight elements, such as
downpipe brackets, house numbers, letterboxes
and exterior lights.
For fixing points up to a 5kg load in walls
insulated with foam-type insulation such as
polystyrene or polyurethane, one way to provide a
secure fixing location is to use a spiral-shaped
plastic assembly anchor, complete with sealing
washer and integrated threaded sleeve (finished
with silicone sealant). The design of this, as with
EJOT’s Iso-Spiral anchor, is such that it embeds
very securely because of its design into the
insulation without creating a cold bridge.
Light-to-medium weight mounted elements – up
to 15kg per fixing point – will, however, still need
Above: The engineered quality of Iso-Corner is now rubberstamped
with an ETA.
securing to the building substrate. This can be
achieved with a longer fixing comprising a plastic
bush, EPDM washer and a façade anchor. Within
the EJOT range this is known as the Iso-Dart (see
opposite page), and it is a type of fixing that can
be used in EWI applications with an insulation
thickness of up to 320mm.
Installation is straightforward, with the concrete,
brick or block substrate drilled firstly to allow for
the anchor to be inserted, after which the plastic
bush and seal are attached, silicone sealant is
applied, and then external elements can be
attached. The length of the fixing and the fact that
its design incorporates plastic and EPDM
components not only delivers a secure fix into the
original substrate, but it also minimises thermal
transmission as a result of thermal decoupling.
Don’t take a risk – seek specialist advice
The potential that EWI and ETICS offer for
enhancing the energy performance of UK
properties is huge, but it is vital that we don’t
allow compromising factors like the attachment
of external elements to undermine the goals of
clients, architects and system providers. That’s
why innovative fixing solutions like those in the
EJOT ETICS range are so important, meaning that
installers can achieve the right result every time,
whether it is a medium-heavy or lightweight
element to be mounted onto the façade.
Accessing the right support in this area is easy, with
plenty of help available online in the form of
technical brochures, datasheets, video installation
clips and more, as well as directly from EJOT.
Contact EJOT
www.ejot.co.uk
@EJOTUK_Building
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SEPTEMBER 2020 TC 53