Posted: 22 Feb, 2021
Wall is situated in the heart of the City of London, the site is set
amongst parts of the original London Wall and St Alphage Church built
in Roman times.
initial discussions for this project started early back in 2011 with
Spacehub. Further discussions took place during 2013 with both
Spacehub and Make architects with regards to material specification
and budget pricing.
The project went to official tender in mid-2015 with Frosts Landscape
Construction being awarded the contract in early 2016 with the order
for the natural stone being awarded to CED not long after.
were different areas for this project which all had their own
requirements and some needed development from their original form at
1) Yorkstone paving area & Salters Gate
original specification for this area was Scoutmoor Yorkstone. Ced
priced for an alternative Yorkstone. To ensure that all parties were
happy with our alternative, a full-size sample panel was supplied as
a benchmark for the order, full technical details with updated test
results were supplied for all those involved to view and comment.
After lots of discussions, the order was placed. The Yorkstone we
supplied was selected for its blue/grey colour with only 5% buff
colouration. Coal content quantity was also very important, the client did not like the heavily coaled paving so a small selection process took place at the quarry to avoid any heavily marked pieces
from being supplied.
of 63mm thick paving
Steps, risers, and also a small number of setts with stainless
steel insert visibility strips to the Priory and Salters garden
Black Basalt Water Feature
This was an immense project with lots of detail and CAD drawing work,
very tight tolerances and finishes to the stone not previously used
for any other project.
A scaled-down mockup was produced and air freighted over at the
start, this was then viewed at Frosts premises along with Make
Architects, Spacehub and Brookefield Multiplex. The mockup
contained a variety of finishes and shapes to enable the final design
to be chosen for the main order.
One big challenge for us was designing and producing an anti
pedestrian finish to the top of paving which was going to be used
along the edges of the water feature. The edges of the water feature
were at ground level and had the potential for pedestrians to walk
into the lowered pool section.
After lots of airfreighted samples, it was time for a visit to the
Our Commercial Director, Calum Fraser, accompanied 2 Frosts employees
to our factory for a quality inspection and to also view additional
samples worked on for the anti-pedestrian finish. After lots of
discussion the factory finally managed to achieve the finish we were
70 tonnes of black basalt will make up the main water feature.
area, situated next to the 14th
Century remains of St Alphage church tower, is to mimic the quality
and finishes supplied to the water feature. It is a staged seating
area on different levels consisting of large steps and risers. The
specially designed split top finish which is used on the water
feature is also used in certain areas of the Clamber Terrace to act
as a deterrent for
30 tonnes of black basalt will make up the Clamber terrace area.
We are also supplying various basalt steps and paving for various
areas to the rest of the site as well as black Icelandic pebbles.