
Slab Formwork
MODUDECK — Ultra-lightweight slab formwork at 13.6 kg/m²
JeanFour's MODUDECK is the ultra-lightweight aluminium slab formwork for cast-in-place concrete floors. At only 13.6 kg/m², its 140 mm extruded aluminium profile combined with a 9mm phenolic plywood face offers the best weight-to-strength ratio on the market. Manual installation without lifting equipment significantly reduces formwork costs and time.
Products in this range
Every product is manufactured in Perrex (Ain) — competitive lead times, quality controlled.

MODUDECK
Ultra-lightweight slab formwork that allows for safe work from the ground, without the need for heavy lifting equipment. It combines extreme lightness with robustness and features simplified assembly thanks to dedicated accessories.
View product
Why choose the Coffrage de Dalle range?
Ultra-lightweight
13.6 kg/m² — manual installation without crane or forklift
Extruded aluminium
140 mm profile — optimal rigidity for standard spans
Phenolic face
9mm phenolic ply — smooth finish, repeatability and multiple reuses
Range of widths
Widths from 450 to 900 mm to cover all floor grid configurations
Fast assembly
Tool-free connection — significant time savings on site
French manufacturing
Designed and manufactured in Perrex (Ain) — quality controlled at every stage
Common applications
Need a quote for Slab Formwork?
Response from our technical team within 24h — no obligation.
