South Australia's security door specialists

It is a sad reality that the door or window that you leave open to let in the light or breeze may also let in an intruder intent on harming your family or taking your possessions. Today’s society demands that you protect what’s yours and there is no better protection in South Australia for your property than security doors such as Invisi-Gard Security Screens.

Combining the strength of Marine Grade 316 Stainless Steel with the beauty of aluminium, Invisi-Gard Security Screens offer unparalleled clarity of vision with uncompromised security.

Tested and approved in accordance with Australian Standard AS5039.2003 you can be assured that the Stainless Steel Mesh will defy the most determined attack from both intruders and corrosion.

Invisi-Gard Stainless Steel Screens provide a wide range of products suitable for residential and commercial applications. 

  • Hinged Door
  • Patio Enclosures
  • Sliding Door
  • Emergency Escape Systems

  • Sliding Window
  • Pool Fencing
  • Security Screen

Cast Grilles

Security Products such as Cast Grilles at Johnson Home Improvements

Cast Grilles used on door and window screens provide a visual deterrent and can be effective protection against uninvited guests.

Safety products

Our designers and tradesman can create a number of safety doors and grilles to suit your requirements, including:

  • Standard grille mesh
  • Stainless Invisiguard mesh
  • One-way vision mesh
  • Decorative panels
  • Hinged and sliding doors
  • Fixed or hinged grilles

Aluminium Mesh and Grills

Security Products such as Aluminium Mesh and Grills at Johnson Home Improvements

JHI in South Australia offers a wide range of Window and Door Grille options that will improve the security of your home. Aluminium Grilles are perfectly suited to a wide range of window applications as well as both hinged and sliding doors.

The wide range of security door designs and proven quality ensure security requirements for any home can be met. All products are custom made to enhance the design of your home.
Mesh Grilles have a 7mm strand thickness and meet the requirements of the Australian Security Door Standard AS5039. All Diamond Mesh Doors are available with the option of One Way Mesh, ideal if added privacy is required. One Way Mesh allows you to see out through your door at the same time as reducing the visibility into your house from the outside.