The Armour Joint Lesa Type A1, A2, & A3 provide floor joint edge protection using square-edged steel flat bars positioned vertically. These types are designed for use with timber formwork and do not include dowels. They offer a robust solution for ensuring the longevity and structural integrity of concrete joints.
Type A1 is pre-assembled for mounting directly on top of timber formwork, simplifying installation. Type A2 features one pre-drilled side for nailing to the formwork, while the second side is tack-welded to the first side. After the concrete pour, the welds are cut to allow for concrete shrinkage, providing flexibility during curing. Type A3 is pre-drilled on one side for nailing to the formwork during the first concrete pour. The second side is pinned to the first after the formwork is stripped from the initial pour, ensuring continuity and ease of installation.
Additionally, Type D is a version of Type A1, typically used for doorways, sometimes with a 10mm step across it.
Why Choose Armour Joint Lesa Type A1, A2 & A3?
The Armour Joint Lesa Type A1, A2 & A3 systems provide excellent edge protection for concrete joints, ensuring durability and flexibility during construction. These systems simplify formwork and reinforcement, reducing labor time and improving overall efficiency on site.
