Description

WISA-Form Maxi Birch is the perfect choice when producing large seamless concrete surfaces. The product combines the key features of WISA-Form Birch with the extensive maxi size range making the panel a natural choice when designing special projects. A maxi sized panel can also be a time saving factor both in frame system manufacturing and in special custom build forms.

Properties

  • Excellent strength/weight ratio
  • Sound face for smooth surface
  • Good striking properties
  • Wide size range up to 12300 x 2700 mm
  • Possibility to customise according to your needs

End-uses

  • Vertical formwork
  • Special formwork
  • Frame formwork systems

Bonding

Weather resistant gluing according to EN 314-2/class 3.

Surface and edges

WISA-Form Maxi Birch has a coating weight for both sides is approx. 220 g/m2.
WISA-Form Super Maxi Birch has a coating weight for face 540 g/m2 and
reverse side 220 g/m2.
Face and reverse: Dark brown phenolic film.
Edge protection: Water resistant paint.
Only the top side can be used for concrete shuttering.

Panel sizes

Maxi panel sizes are 2000 –12300 x 2000 – 2700 mm

Thicknesses and weights

Nominal thickness (mm) ​Number of plies Thickness Weight (kg/m2) abt
min. – max.
6.5 5 6.1 – 6.9 4.4
9 7 8.8 – 9.5 6.1
12 9 11.5 – 12.5 8.2
15 11 14.3 – 15.3 10.2
18 13 17.1 – 18.1 12.2
21 15 20.0 – 20.9 14.3
24 17 22.9 – 23.7 16.3
​27 ​19 ​25.2 – 26.8 ​18.4
​30 ​21 ​28.1 – 29.9 ​20.4

Sizes and thicknesses relating to moisture content 8–12 %.
Thicknesses and tolerances fulfils the requirements of EN 315 (Plywood – Tolerances for dimensions) and are in part stricter.