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About Us

Gray’s Concrete is a proudly family owned and operated Western Australian company which has been involved in the modular building industry for well over 40 years and the leading manufacturer of pre-stressed concrete floors and associated products since 1990.   Over 80% of all concrete based transportable/modular buildings in Western Australia and the Northern Territory rest on Gray’s Concrete floors.  

We're honest, reliable and trustworthy and always aim to provide the best quality and range of products and services possible.  By doing so in a timely and cost effective manner, we keep our clients coming back!  We've partnered with many for over 20 years and whilst we're excited to welcome new clients, we cherish the ongoing partnerships that form over time, with trust and respect as the foundations.


Our Mission

We value integrity.  To continue to be the premier and most trusted supplier of concrete products to the modular building industry into the future, our mission is to treat our clients, staff and suppliers the way we’d like to be treated. 

So what does this mean?

For Our


  • upfront quotations for each project, with no hidden costs or extra charges.

  • personalised service & advice to ensure our products meet your project needs in the most cost-effective manner possible. 

  • the knowledge that all products have been manufactured following our strict quality control procedures and using only quality inputs which comply to Australian Standards.

  • delivery of our products will be to specification and within agreed time frames.

  • in the unlikely event you’re not satisfied with a product that we’ll work with you to rectify the situation as soon as possible.

For Our


  • being remunerated well for their loyalty and service at rates well above award requirements.

  • knowing their superannuation contributions are being paid into their nominated fund on a monthly basis to maximise their returns.

  • knowing that their holiday, sick, family and long service leave entitlements will always be honoured and that their jobs are secure.

  • knowing that Gray’s Concrete value them and their safety and will continue to implement procedures and policies to safeguard their well-being.  

For Our


  • we will provide loyal and honest custom.

  • you will receive our payments on or before their due date every time.



Legal Name
  Mandrecob Pty Ltd
Trading Name
  Gray's Concrete Transportable Floors
087 703 204
69 087 703 204
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