When faced with a clean white wall we as humans are looking to keep the cleanness but also looking to add functionality, style and a little bit of personality. It is through anchors and fixtures that we can seamlessly add these elements together.
Safety and strength are what lies beneath the surface of this functionality, and personal touches and anchoring and fastening systems are basically about creating the safest, strongest, and longest-lasting bond between two materials. From timber frames covered in Gyprock to brickwork and concrete structures, there are as many various styles of fixing and anchoring as there are varied materials to fix to.
Mechanical anchors attach to concrete through friction by mechanically expanding or wedging into the concrete. Also known as ‘sleeve anchors’ for obvious reasons, they come in a variety of different forms and have become a major fixing mechanism for tradies.
Mechanical anchors can put out a tremendous amount of force as they expand. When used close to the end of a block of concrete, this expanding force can cause a breakaway that weakens the structural integrity; therefore a minimum edge distance must be maintained.
Thread-forming anchors have become more and more popular over the years for their convenience. They are particularly well suited to close-to-edge fixings because they only use the lock-in force of the tooth of the thread, instead of expanding and potentially bursting the surrounding substrate.
They may not be as strong as some of their mechanical brothers – although they can certainly hold their own – but the beauty of thread-forming anchors is they are also removable and reusable, so come in handy for temporary jobs.
A pre-expanded anchor is basically like a thick nail that has been pre-formed into a kinked shape. As the bent rod is hammered into a hole, it straightens. It then naturally wants to return to its original shape, which causes it to jam against the sides of the hole it was forced into.
More and more tradies are using these clever little anchors, particularly when fixing bottom plates.
Heavy-duty adhesives are another great bonding agent when used in conjunction with other fastening mechanisms. At its most basic level: you drill a hole, insert adhesive chemicals and bolt, allow the liquid chemical to harden and Bob’s your uncle.
This works well thanks to the porous nature of concrete and brick, plus over the years it’s been developed to be safe from hazardous fumes, easy to clean, quick drying, used on a myriad of materials and in any type of temperature setting.