PROJECT – Dumas House, Perth

Concrete Repairs,  Joint Sealing and Abrasive Blasting.
Perth, Western Australia


Jones Lang LaSalle


Tiernan Byrnes


BUSS was engaged by Jones Lang LaSalle on behalf of the WA Department of Finance, to form part of the rejuvenation works to Dumas House.

The State Government’s iconic public service building, Dumas House, is receiving a facelift with restoration work to the facade and podium. Dumas House was opened in 1966 and Heritage Council of WA listed in 2000, the building has a structural steel frame and is clad in concrete and granite.

More than 50 years, the heat, cold, wind and rain have deteriorated the building’s exterior in its exposed position north of Kings Park, the materials have reached the end of their useful life and need to be repaired or replaced.

BUSS was engaged to undertake remediation works specifically safety, heritage and conservations repairs to the Western Stairwell to ensure that Dumas House remains in good condition for the next 50 years.

BUSS was tasked with improving the safety of the area and complying with the existing area with current Australian Standards.

The BUSS Scope of Works was:

Stabilise Loose Pavers

  • Safety repairs to the Paving.
  • Identify all loose pavers, remove the traditional mortar and replace pavers.
  • Ensure the correct level in accordance with safety and heritage requirements.

Blast New Non-Slip Profile to Stair Treads

  • BUSS used wet abrasive blasting the top edge of marble stairs to create a non-skid profile.
  • BUSS used a medium rated abrasive blast material to ensure removal of all stains without any negative effects on the condition of the original heritage material.

Cleaning and application of heritage approved protective coating to the heritage steps and paving

  • High-pressure water washed all pavers, stone garden beds, retaining walls and steps to remove the bore water staining.

Joint Sealing

  • Cut and remove the original joint material and diamond grind the shoulders of the joint to clean.
  • Supply and install Sikaflex Pro Polyurethane jointing material.

Install New Aluminium Anti-Slip Stair Nosing

  • Remove the old stair tread edging that is no longer compliant to AS1428.1-2009.
  • Supply and install new Aluminium Anti-slip Stair nosing in accordance with Heritage Contractor.

Removal and Replacement of existing Tactile Ground Surface Indicators (TGSIs)

  • Mechanically remove the existing old TGSI’s.
  • Supply and install new TGSI on the same locations with additional TGSI as per recommended in AS 1428.1-2009.

Replace Existing Handrails (Middle section only)

  • Cut and remove the old midsection handrails flush with the concrete
  • Supply and install new stainless-steel sections as per AS1428.1-2009


  • Wet abrasive blasting equipment.
  • Sika Pro Polyurethane Joint Sealant.
  • Specified Digger Rust and calcium remover.
  • DTEC DE0200B Aluminium Nosing.
  • DTEC Tactile Ground Surface Indicators.


  • High-risk abrasive blasting works safely completed.
  • Façade Remediation was successfully completed prior to DUMAS House Practical Completion.
  • DUMAS house is now compliant with modern Australia standards for all BUSS works.
  • The iconic project successfully finished by BUSS.