WISA-Form MDO is a coated special plywood for use in loose panel concrete formwork.
Plywood made solely from spruce (softwood) veneers bonded together in a cross banded construction.
Phenolic resin cross-bonded weather resistant glueing according to EN 314-2/class 3.
Surface and edges
Face: MDO coating, for matt concrete finish.
Reverse: Dark brown phenolic film with imprinted text “WISA-Form MDO” as moisture barrier.
Edge sealing: Water resistant paint, light brown.
Thicknesses and weight
|Nominal thickness (mm)||Min. thickness (mm)||Max. thickness (mm)||Weight kg/m2 (MC 10 %)|
2440 x 1220 mm
Size tolerance (length/width) ±1mm per metre
Squareness tolerance ±1mm per metre length of diagonal
Typical number of reuses is likely to be in the range of 10 – 15 times. However, the number of reuses will depend on a wide range of factors including good site practice, the required concrete finish, careful handling & storage of forms and the type and quality of release agent.
Form release agents
The selection of the most suitable release agent will ensure cleaner striking of the forms and thus more reuses, as well as better quality concrete finishes. The chemically active release agents are considered to be the most suitable for MDO coating.
Important note: MDO coating is not pre-oiled and must be oiled twice before first use, and thereafter once before each subsequent reuse of the form.