Heritage restoration currently under way.

HSR were engaged by Renewal SA to carry out a full dilapidation and associated costs to the East/South and Western facades of the Adelaide Railway station in order to determine a scope of works for the repair of structural and non-structural rendered elements that form the facades of the Railway Station.

Prior to the works being carried out the façade was cleaned by HSR using a steam pressure cleaner which provides a super-heated steam rather than the usual high-water pressure, this machine removes all dirt /grime etc. without the risk of excessive water penetration into the open cracks etc.

Various repair methods were used on the project as outlined below:

  • Full render repair – Removal of a defective area and replace with new render that matches exactly with the original in both colour and texture.
  • Crack injection- small cracks are filled with a coloured mortar to match existing, then a two-part epoxy resin is carefully injected into the crack using small syringes.
  • Structural repairs- in the case of steel corrosion behind the render, the render is removed to expose the underlying steel reinforcing which is then cleaned to remove loose corrosion, once cleaned the steel is treated with a zinc rich protective coating, then treated the area is re rendered to match the existing.
  • Protective membrane application – a protective coating was applied to all horizontal surfaces Window sills /cornice sections etc. in order to provide a stable waterproof finish.
  • Entire replacement of moulded sections under the cornice – In some cases continuous water penetration had caused severe corrosion of the Modillions which form a decorative part on the underside of the cornice, due to their friable nature these sections had to be removed entirely and new pieces carved by HSR masons and fixed into place.

HSR were engaged by the main contractor Complete Building Services to carry out a full dismantle and rebuild of the entire Northern elevation of the Maid and Magpie Hotel in order to rectify the damage created by the subsidence within the original footings.

Full dilapidation was carried out by HSR prior to commencement of the project which included a comprehensive photographic record and exact dimensions of each element of the area, this included locations of windows, chimneys and any other feature that needed to be re-instated during the rebuilding process.

Starting at the roof line of the elevation the entire North wall was carefully dismantled brick by brick and stone by stone with each individual item being documented and cleaned for re use.

Over a period of several weeks the process continued until the entire wall was taken down and catalogued by a team of HSR masons, with all bricks and stone carefully palletised according to its location thus ensuring the materials were re laid in their original position.

Once a new concrete footing was installed HSR began the process of rebuilding the elevation using all the previously salvaged original materials and utilising the details taken during the dismantling process.

Consultation with the project Architect and Heritage advisor ensured that the rebuilding process produced an exact re instatement of the original Northern Elevation in every detail.

 

Extensive works reinstating all damaged heritage brickwork, ornate solid rendering to external facades including all internal rendering and plastering, and making good cornices and mouldings.

New and refurbished metal windows and guarding, and specialist cleaning to all masonry facades.

 

The project included the conservation and restoration works to the exterior and interior of the telecommunications exchange building.

The scope of works involved specialist façade cleaning, heritage brick work, stone and timber conservation and solid rendering.

Conservation works to the Grote St elevation of the Adelaide Central Markets have now been completed in time for the City of Adelaide’s 2018 holiday season.

The brick work has been through a meticulous conservation process whereby all previous applications of paint to the facades are removed – returning the finished surface to the true face-brick.

The mortar joints were then raked and re-tuckpointed in a raised three-dimensional fashion, further highlighted by a precise application of a mineral-based paint to create contrast with the brickwork.

Scope of works included internal rendering and plastering, Lath & Plaster ceiling and cornice stabilisation. External stone conservation to facades, restoration to villa verandah, new fireplace surrounds and restored chimneys.

Refurbished all timber floorings.

Conservation works to the north face of Elder Hall have recently been completed with tremendous effort and commitment to a tight deadline by HSR Aust Group’s Site Manager.

The project saw the original hewn rock-face blocks freed from a thick layer of concrete-based render that had been applied during previous site works as an attempt to modernise the exterior, and extensive stone replacement with new high quality sandstone materials quarried from NSW.

The sandstone blocks were hand selected for purpose and carved onsite by HSR Group’s stonemasons using specialist tools in order to achieve finishes to the exacting standard demanded required for a building so integral to the aesthetic of the Adelaide University campus.

With these works complete HSR Group has now concluded conservation works to each elevation of Elder Hall, receiving accolades from the Master Builders Association for the high quality of craftsmanship demonstrated throughout the project.

The vision for Bonython Hall was said to be reminiscent of old English universities in a grand gothic style. The foundation stone was laid in 1933,  and was constructed of Murray Bridge limestone with worked surfaces emphasising the texture of the stone. The roofing slate was from the Willunga quarries, the windows were set within arcades to protect the interior from the intense heat of summer and contemporary technology was used such as steel trusses and reinforced concrete.

This project consisted of specialised cleaning to the northern façade, dismantling render and brick cupolas to the twin towers then reconstructing with fibre glass to replicate the original intricate mouldings, ensuring the tower chambers were structurally sound by introducing carbon fibre steel, stabilisation and structural pinning to large northern tracery windows and repointing in traditional limestone to total façade.

The Bank of South Australia building, done in an ornate French renaissance style, was erected between 1875 – 1878. The building has many exceptional features, which were originally undertaken by celebrated Scottish sculptor William Maxwell and British painter and sculptor Joseph Durham, in particular the intricate stone carvings and the coat of arms on top of the portico on the King William street façade.

This project involved structural concrete repairs and stone replacement to abutment features, safe removal of chrysotile asbestos mason’s putty to stone ashlar joints, specialist façade cleaning, solid render repairs and crack stitching and injection. HSR also sourced the original stone and re-opened Waikerie Limestone Quarry purchasing the mining lease.