2020
Collaroy, Sydney

Project Background

In Collaroy, a unit complex faced concrete spalling issues, leading to waterproofing problems impacting the balconies and some internal units. The cause of the extensive damage was magnesite.

Project Requirements

  • A Consulting Engineering report was completed, with recommendation to significant repairs for most of the balconies and some units affected by concrete spalling caused by magnesite.
  • Following on from the spalling repairs all the units and balconies required waterproofing to ensure the minimisation and prevention of future issues.

Sika Solution

  • Sika Monotop 412 NFG was specified as the concrete repair mortar.
  • Sika Monotop 910N was specified as the corrosion inhibitor for the steel reinforcement and as a primer for the 412NFG.
  • Moisture Seal 2k was used as the primer and Sikatite Undertile as the waterproofing membrane.

Project Size

Project Size

4500lts of Sika Monotop 412  

100kgs of Sika Monotop 910N

240 litres of Moisture seal 2k

225 litres of Sikatite Undertile                                       

Sika Representative / Project Manager Craig Adams
Date June 2020
Location Collaroy, NSW

Sika Products Used