The document provides details on several heritage masonry projects completed by Yorkshire Masonry including: 1. Repairing a 60m chimney in Randwick including repointing bricks, replacing cracked bricks, and epoxy injecting render. Accessing the top required designing a lifting platform. 2. Repointing and repairing brick facades at the Walsh Bay Heritage Listed Mills over 6 months while new facades were constructed. Special shaped bricks were replaced. 3. Repointing and repairing a small chapel building at SCEGGS School, including doweling sandstone blocks and removing timber and metal plugs.

1. YORKSHIRE
(NSW) P/L.
ABN 45 104 650 768
Masonry Contractors
Po Box 580 Crows Nest NSW 1585 Phone 9437 9965 Fax 9437 9963
HERITAGE MASONRY REFERENCES
Restoration: the act of returning the existing fabric of a place to a known earlier state by removing
accretions or by reassembling existing components without the introduction of new material.(Burra
Charter 1999)
Existing Heritage Chimney Repatriation
References:
Construction Manager, Michael
Owen 0425 363 293
Architect: HBO + EMTB, Brian McDonald.
Scope:
• Access Issues
• Street Hoardings
• Demolition
• Repointing
• Re-instatement of defective Brickwork
• Chemical Injection of Brickwork
• Chemical Injection of Render
• Clean and Protect Metal Bands
• Graffiti Removal
• Brick Clean
This chimney is the remains of the Rail Yards at
King St Randwick. (Pic 1) It was used to burn
old rail sleepers. It is 60m high and part of the
DA requirement on the project was to repair the
cracks, replace cracked bricks, point up
weathered joints and epoxy inject all render
detailing.
(Pic 1)
First challenge was getting to the top. In
conjunction with Carrabeena Access we
designed a ring that could be landed on top of
the chimney and anchored down in side it. To
the ring was attached a walkway that had an
access hole from below. (You can see the ring
and access hole in Pic 2)
Pic 2
From the ring we hung 2 x 2man boats capable
of 250kg each. Our brickies then spent 2 days
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2. training in the operation of the boats, emergency
procedures including high-level rescue.
Once we were able to access all areas we
demolished the existing concrete ring on the
top of the chimney and had a piece sent away
to recast a new one to be lifted back on later.
The bulk of the work was to repoint the existing
masonry (See Pic 3)
(Pic 3)
Picture 3 is a detail of the western face at the
head of the chimneystack
Picture 4 is the same area after it has been
repointed. We used lime mortars for repointing.
(Pic 4)
The project took a total of 10 weeks. It included
the repointing, cleaning back all metal rings and
coating with epoxy primer, injection to the
rendered tablature at the base, graffiti clean, and
the final clean of the whole project with scrubbing
brushes and casked wine. By the end
of that the Brickies and Apprentice working on
this had a good set of sea legs and smelt like
drunken sailors.
Walsh Bay Heritage Listed Mills.
Reference: NSW Department of Commerce.
Project Manager. Rees Mackay 9241 3933
Scope:
• Repointing of Existing Façade
• Source & Supply 8 special shaped bricks
• Forming openings and Arches in
existing walls.
• Replacement of existing brick details
• Replacement of Corroded metalwork
items.
This project had 3 separable portions.
Repair the existing façade, modify the
existing internal walls and construct a new
façade on Hickson Rd. The 11m arched
entry to the Sydney theatre.
The heritage portion of the works took 4 men
6 months to complete and was undertaken
while we constructed the new facades with
other teams of bricklayers.
The existing masonry facades were becoming
unstable around the steel built in items and
required repointing to the weathered areas.
Pic 5 shows the brickwork that had been
dislodged by the expansion of the steel arch
bars. A number of special shapes were
missing which we cut from reclaimed bricks.
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3. (Pic 5)
Pic 6 shows the extent of the brickwork we
removed prior to grinding back and epoxy
coating the steel arch bars. Quite a few
special shapes had been cracked by the
expanding steel, these were glued back
together for installation.
(Pic 6)
Pic 7 shows the completed works cleaned down.
New full bricks that were required were stained
prior to laying to maintain the original patina.
(Pic 7)
The project specification required the reuse at
all possible times of the existing bricks.
A number of new door and mechanical
openings were required throughout the existing
structure. All bricks were salvaged and stored
for future use. Pic 8
(Pic 8)
Pic 9 The reclaiming and laying of the original
bricks ensured the new façade panels blended
in with the existing works and maintained the
overall appearance.
(Pic 9)
Pic 10 shows one of the special shapes we
sourced for the project. We required 3
different tapered bricks within the arches, bull
nose and squint bricks to maintain the existing
masonry detailing.
(Pic 10)
The works within the existing mill required
Yorkshire to cut penetrations through walls 11
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4. skins of brickwork thick. Door frames were
installed in the openings and the brick
walls faced up to match existing Pic 11.
(Pic 11)
SCEGGS Heritage Buildings.
Reference:
Tanner Architects Karen Urquhart, 9281 4399.
SCEGGS: Sue Pynenburg. 9339 9457
Scope:
• Repointing of Existing Facades
• Dowelling Sandstone Blocks to
Gable Ends
• Forming openings and Arches in
existing walls.
• Remove and Replace damaged
masonry
• Removal of Timber and Metal Plugs.
• Cleaning down by hand
This building is on the grounds of SCEGGS
School at Darlinghurst. It was a small chapel.
As you can see from Pic 12 the façade consists
of arches and bulls eyes. The whole of the
façade required repointing to some extent. The
horizontal rods running across the base of the
gable are to stop the capping sandstone from
slipping down the gable. Yorkshire were
therefore required to use stainless dowels to
pin and epoxy the sandstone capping down to
the brickwork
(Pic 12)
Pic 13 showed the state of the Sth face. It was
as if the bricks had been stacked with a layer
of sand between each course. A soft brush
was able to remove the ‘mortar’ easily and
bricks could be pulled out by hand.
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5. (Pic 13)
Pic 14 shows the same area of wall after the
wall had been grouted up solid and before it
was cleaned.
(Pic 14)
The East wall with the Arches and Bulls eyes
had been constructed with a larger white brick
using a tighter gauge. It is typical of older
structures for the money to be spent on the
bricks facing the front or road and the balance
to be selected commons.
Pic 15 shows the existing facing bricks. The tight
beds and perps required specialized tools for the
repointing. Time spent with the correct tools
avoids cleaning down dirty work on completion.
Yorkshire do not clean down heritage works with
acids or high pressure water.
(Pic 15)
The joints are cleaned out of all loose mortar.
Pic 16 shows the facing joints starting to
take shape.
(Pic 16)
Yorkshire, by using traditional methods,
and working within the guidelines of the
Burra Charter, have been able to bring
back to life, Heritage masonry.
Masonry, which will serve its owners for
another 100 years.
The best conservation often involves the
least work and can be inexpensive. (Burra
Charter 1999)
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