News / building defect

• Jun 27, 2013

  North Ryde train station stairs closed due to efflorescence.

  The Epping to Chatswood railway line was opened in 2009 at a cost of $2.3 billion. It appears that only four years later, the stairs adjacent to the escalators are no-longer useable due to efflorescence, and are barricaded off.  Estimated demolition/ replacement cost of stairs: $110,000.00  Estimated cost of Efflock for the entire twin flight of 75 steps: $320.00 As you can see, Efflock provides very economical protection. The water based formula is a green choice as it is a high concentrate, meaning less plastic waste. But best of all, Efflock ensures the intended service life of carbon hungry building...

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• May 03, 2013

  Did you know? Efflorescence can be a liable defect.

    Builders and tilers beware.In the past leaching or efflorescence was regarded as a 'maintenance issue' for building owners. However, since 2007 it has been listed as a defect in the national publication: 'Guide to Standards and Tolerances'. At the bottom of page 49 of the guide, is the following clause: "13.08 Calcification and efflorescence associated with decks and balconies   Calcification or efflorescence caused by water coming from a deck or balcony that occurs on walls below or beside the deck or balcony; or that appears in the mortar joints of the deck or balcony tiling, is a defect. Activities of others,...

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• Nov 26, 2012

  Trapping moisture with a secondary membrane

  The popular approach to controlling efflorescence on tiled balconies, is to provide a secondary membrane directly beneath the tiles. Another approach is to bond the tile bed directly to the substrate and install a single membrane on top. Both of these methods are popular and can be effective in controlling efflorescence from the tile bed, but there are pit-falls. Firstly, efflorescence is also known to release from tile adhesive and grout, which are both located above the membrane. Secondly, these methods trap all the moisture in the tile bed under an impervious membrane. Moisture in the tile bed concrete mix...

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