Certified chartered building and consulting engineers, specialising in coastal building corrosion

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The Building Diagnosis Centre provides you with a professional chartered building consultant to perform inspections, construction, engineering, architectural reports and quality control.


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	Mailing Address: PO Box 1187, Manly NSW 1655 AUSTRALIA Telephone: Tel: 02 9907 1688 Fax: 02 9939 5889 Mob: 0408 911 210

Building Diagnosis Centre consultants advise on damaged coastal property from the Northern Beaches Peninsula to the Sydney Harbour foreshores.

Our Chartered Consultants investigate corroding, defective and neglected coastal residential strata apartments and commercial buildings. We specialise in concrete cancer and waterproofing problems, and can provide inspections, specifications, and reports. We provide quality control and can project manage builders to achieve best practice rectifications. We also offer expert opinion for dispute resolution and litigation for clients and solicitors.

Owners Corner:
Dealing with water penetration, floor slab corrosion and rectifications - by Robert Speirs-Ferrari.

Corrosion rectification and prevention

Coastal properties are irreplaceable assets which need to be preserved. Corrosion can occur in even the best designed and constructed buildings and can be worsened by neglected maintenance. Early assessment of the building condition is vital. Erosion damage places large financial burden on the owners of Owners Corporations strata plans to provide for necessary repairs, rectifications and preventive treatments. We specialise in comprehensive specifications and contracts purposely prepared for corrosion rectification works.

Benefits include:

Producing a sound asset for the owners and investors

Saving money from early intervention

Minimising disruption from major work


	The consultancy since 1987 has developed through design and construction projects since 1976. Robert Speirs-Ferrari a Chartered Building Professional with 30 years experience advises that properties in coastal locations without preventive measures to combat the harsh coastal environment, suffer increased poor dilapidation conditions.

Assessments of remedial & rectification works

Faulty workmanship and or materials contribute to building damage when non-experienced building contractors are engaged and don’t adhere to specifications, drawings and contracts while performing the construction or with remedial and rectification works.

Building Diagnosis Centre Pty Ltd provides consulting contract administration that ensures only selected contractors provide quotations and their works certified completed by the inspecting consultant.

Concrete Cancer, Magnesite, Waterproofing and Membranes

As Specialists, Building Diagnosis Centre chartered building and engineering consultants resolve spalling concrete damage commonly known as concrete cancer.

Corrosion starts with the external fabric of the building, balconies and migrates internally contributed to by water soluble salt penetration that corrodes concrete slab floors. Floors having magnesite toppings concealed by carpets or tiling substantially increases damage deep into the reinforcement steel.

Other corroding damage occurs to steel lintels over windows and dangerously secured balustrades to balconies. Deteriorated waterproof membranes to roofs, balconies and terraces, corroding steel / aluminium windows that also permit wind driven rain to penetrate the interior environment and through protective membrane coatings to building walls and balcony parapet masonry walls.

Basement parking also suffer serious spalling concrete and brickwork, foundation settlement, water seepage and rising damp through walls and slab floors due to defective waterproofing, faulty drainage systems and poor workmanship and or materials.