COFFOR is a patented structural stay-in-place formwork system to build load bearing walls.

COFFOR is composed of two filtering grids made of rib lath reinforced by vertical stiffeners. The grids are connected by articulated rebar loops that fold for cost effective transport. The volume used by COFFOR is 7 times less than the equivalence in bricks, concrete blocks or Insulated Concrete Formwork (ICF).

COFFOR before concreting

COFFOR can be carried by hand
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COFFOR after concreting
 
COFFOR is very light: less than 11 kg/m2 (2.25 lb/sq ft). A standard panel 1.22m x 2.70m (4' x 9') weighs 35kg (77lbs). COFFOR can easily be carried by 1 or 2 workers.
 
 
After COFFOR is placed, concrete is poured inside. Excess water is eliminated by gravity through the grids. The fluid concrete becomes semi-solid decreasing pressure against the grids.

This explains why COFFOR can be so light compared to traditional heavy waterproof formworks.

COFFOR remains in the construction to reinforce it after the concrete is poured.
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