About Us

Our Expertise


With costs of fac­ade cladding reach­ing 12-15% of commercial build­ing costs, (equal to the mechan­ical ser­vices costs) the need for an exper­ienc­ed Con­sult­ant on the De­sign Team is an essent­ial re­quire­ment.

What is lack­ing in build­ings that show de­fects in the form of wa­ter en­try, de­grad­at­ion of ma­ter­ials, spal­ling, and formation of condensation, is tech­no­logy.  True tech­no­logy is the under­stand­ing of ma­ter­ials and their suit­a­bil­ity for the pur­pose they are in­tend­ed, and the com­pat­ibil­ity be­tween them and their long term be­hav­iour in their assem­bly.

The typ­i­cal service we per­form is to take the ar­chi­tect’s de­sign and fac­ade el­ev­ations and pro­duce a set of draw­ings with con­cise de­tails, form­ing a set of ten­der draw­ings to­get­her with a de­tail­ed spe­ci­fi­cat­ion of mater­ials, work­man­ship, per­for­mance and test­ing re­quire­ments.  Test­ing of sys­tems is by means of the CSIRO SIROWET test­ing meth­ods on proto­type sect­ions or on actual build­ings and to AS/NZS 4284.

Test­ing of pres­sure equal­is­ed and drain­ed joint de­signs would be done by the ap­plic­at­ion of an ex­ter­nal pres­sure box and wa­ter spray.  This was de­vel­op­ed by the CSIRO in the early 1970s.  In the case of sin­gle seal ass­em­blies the in­ter­nal suct­ion box with out­side wa­ter spray is the ap­prop­ri­ate meth­od.

Fol­low­ing the call­ing of ten­ders we anal­yse the sub­miss­ions to de­ter­mine the best con­trac­tor for the com­plex works, in­clud­ing any mod­if­ic­at­ions to fab­ric­at­ion pro­cess­es that are off­er­ed by the ten­der­ers.  These are then test­ed against our own de­tails and spec­if­ic­at­ions.

The check­ing of fi­nal shop draw­ings from the fab­ric­a­tor is then fol­low­ed by Qual­ity Assur­ance pro­grams in the fab­ric­at­ion yards.

Much of our work also deals with di­ag­nos­tic anal­ysis of the wa­ter tight­ness of ex­ist­ing build­ing skins that have shown de­fi­cien­cies in ma­son­ry, stone, me­tal and glass. By our in-house computer program, we establish a temperature-gradient graph to show if condensation is taking place.


Wa­ter­proof­ing of roofs should not be left to sub-con­tract­ors with­out an in­put in estab­lish­ing de­ta­ils and des­cript­ions of pen­et­rat­ions and con­nect­ion to pa­ra­pets and eaves.  The same applies to bal­con­ies.


In the case of water tight­ness of base­ment con­struct­ion, we pro­duce con­nect­ion de­tails, move­ment joints and mem­brane sel­ect­ions as well as drain­age de­signs and the assoc­iated spec­if­ic­at­ions.

Our Clients and Service

The firm makes extensive use of computers and CAD and is able to use programs created in-house for cladding design in stone, glass and metal.


Our major clients are building owners, developers, contractors and architects, and include large financial investment institutions and government agencies.

Our clients include:
  • Archi­tects
  • Build­ers
  • Build­ing own­ers
  • Pro­ject man­ag­ers
  • Pro­per­ty develop­ers
  • Clad­ding fab­ric­at­ors


Our service may comprise any combination of the following:
  • Clad­ding sys­tem de­sign
  • Eval­uat­ion of clad­ding sys­tems for hygro­the­rmal per­for­mance
    • Cal­cu­lat­ion of R-values, tem­per­at­ure and dew point grad­ients
    • Ident­if­ic­at­ion of po­ten­tial wa­ter in­gress prob­lems
    • Ident­if­ic­at­ion of po­ten­tial con­den­sat­ion prob­lems
  • De­tail and de­sign draw­ings
  • De­sign draw­ing and spec­if­ic­at­ion re­view
  • Per­for­mance spec­if­ic­at­ion and de­tail­ing
  • Pre­lim­in­ary struc­tur­al cal­cu­lat­ions
  • Arr­ange­ment of field test­ing
  • Su­per­vis­ion of mock-up con­struct­ion and test­ing
  • Re­view of shop draw­ings
  • Period­ic site in­spect­ions
  • Creat­ion of a main­ten­ance pro­gram
  • Field in­vest­ig­a­tive in­spect­ion
  • Re­com­mend­a­tion or eval­u­at­ion of re­com­men­ded re­pair pro­ced­ures
  • Ex­pert test­im­ony
  • Due dil­ig­ence re­ports
  • Build­ing code com­pli­ance check­ing

Some of Our Projects

ANZ Bank, Mel­bourne

ANZ Bank, Collins Street, Mel­bourne
ANZ Bank, Collins Street, Mel­bourne
ANZ Bank, Collins Street, Mel­bourne

Facade detailing of a 36 storey office tower for the ANZ Bank Head­quarters at 380 Collins Street, Mel­bourne (1993).  Panel­ised cur­tain wall glass/gran­ite.  Architects:  Peddle Thorp, Melbourne

Nauru House, Mel­bourne

Nauru House, Mel­bourne: Overcladding
Nauru House, Mel­bourne: Over­cladding
Nauru House, Melbourne: Overclad
Nauru House, Melbourne: Overclad
Nauru House, Melbourne: Overclad

The over-cladd­ing of the 52 storey Nauru House – 80 Collins Street, Mel­bourne (1994).  PVF2 finish­ed 4mm alumin­ium sheet.

50 Bridge Street Sydney

Facade repairs and re­seal (1995).

AMP Centre, Sydney

Fan Roof Exterior
Fan Roof Exterior
Fan Roof Interior
Fan Roof Interior

Full detailing of a new con­cept glazed fan roof as an out­door shel­ter on the Plaza of 50 Bridge Street Sydney for the AMP Society (1995).

AMP Circular Quay Sydney

Facade repairs and re­seal (1997).

56 Pitt Street Sydney

Full over­cladd­ing (1998).  Paint­ed composit­ion board.

Due diligence

Due diligence reports on major buildings for invest­ment insti­tut­ions in several states.


Overseas consult­ancy on the use of cladd­ing materi­als, their detail­ing and fix­ing.

Avaya House, 123 Epping Road, North Ryde

Avaya House, Aerial View
Avaya House, Front
Avaya House, Side
Avaya House, Facade Detail

Detailing of a ten storey double-glazed curved facade at 123 Epping Road, North Ryde NSW (2000).

2-4 Lyon Park Road, North Ryde

2-4 Lyon Park Road, North Ryde
2-4 Lyon Park Road, North Ryde
2-4 Lyon Park Road, North Ryde
2-4 Lyon Park Road, North Ryde

Facade detailing for a five storey office building at 2-4 Lyon Park Road, North Ryde NSW (2001).


Detailing for Water: Why Do Buildings Leak?

Steady deterioration of building Standards in respect to flashings and DPC.  Details of how to resolve water entries in domestic and commercial buildings and their basements, exterior walls.  The “3” points of ‘outer rain screen’ the ‘drained cavity’ and the ‘inner air seal system’.  Curtain walls and flat roofs.  Waterproofing membranes.  Tanking membranes.  Ground drainage in and around buildings.  IRMA flat roof insulation methods on page 61 detail 2d.  German flat roof details, vapour barrier and membrane.  Glazing detailing and constructions of windows and curtainwalls.  Produced for an Australian national seminar tour to 10 cities in 2007.  In 2010, the New Zealand Institute of Architects did the same in 3 cities.  Total attendances in AU 650, in NZ 700.

Detailing for Water: Why Do Buildings Leak?

Detailing for Water: Why Do Buildings Leak? Supplement 2014

The second volume of the 2007 book “Detailing for water: Why do buildings leak?” specifically deals with the problems of tree root penetrations on “green” roofs as experienced in Australia and the waterproofing of terraces, balconies and planter boxes.  Basement tanking details.  Efflorescence forming on paving and steps.  Details of CSIRO methods “Drained joint designs” as applied to claddings.  Details show the construction of load bearing and non-loadbearing exterior concrete panel walls and the application of the pressure equalised drained joint system (PEDJ) developed by the Canadian Research in Ottawa in 1968-1973.  Thermal Bridge detailing of curtain walls and windows.  Window sub sill details.

Supplement 2014

Detailing for Water: Why Do Buildings Leak? Weather Tightness versus Condensation in Buildings

This third volume of the 2007 book “Detailing for water: Why do buildings leak?” specifically deals with understanding the difference between the weathertightness aspects of buildings (keeping the rain out) and condensation that is caused from excessive water vapour inside buildings attempting to pass out of the space via walls and roof.  What is a vapour barrier and where to place it?  New ways of insulating walls to avoid condensation.  Condensation takes place both in hot and in cold climates.  The correct placement of suitable barriers and insulation material becomes vital.  The book deals with Australian and NZ conditions and includes a section on freezer room insulation.

Weathertightness versus Condensation in Buildings