Concrete: Forming a Curved Corner

17 Jun 2014
Forming curved corners with concrete. Thin hardboard. Masonite. Cut hardboard. Position with screws. Stake for support.
Completing concrete formwork for a curved surface in the Caribbean

To make a curved corner on a piece of concrete slab, use a flexible material such as thin hardboard that can be bent into a curve (large radius). Masonite is often used for this type of application.

Cut Hardboard
  • Cut hardboard into desired length and height to get the desired curve radius and thickness of the concrete.
  • Centre the hardboard in the desired corner, clamping the ends in position and insert screws to hold in place.
Get Stake for Support
  • Most flexible forms need at least one stake for support and to prevent the radius from distorting when the concrete is poured.