Cupolex-Windi Units


CUPOLEX®-WINDI® creates a ventilated floor in new or remodeled building without affecting the structure of the building. The adoption of CUPOLEX® WINDI® allows you to save on waterproof sheathing and guarantees a constant seal against dampness. CUPOLEX®-WINDI® may also be easily attached to walls to obtain an air space capable of ventilating and eliminating mold and installed to create ventilated flat or pitched roofs.


  • Radon & Soil Gas (VI) Mitigation
  • Basement subfloors
  • Post tensioned reinforced Concrete Slabs
  • Concrete Slab on Grade or basement slabs
  • Replacing Gravel Drainage Layers
  • Replacing Vapor Barriers & Liners
  • Building Green With LEED
  • Technical/Electrical Sub Floors
  • Acoustical Floors
  • Ventilating flat or pitched roofs
  • Green Roofs
  • Solution to provide a drainage layer on terraces and balconies.


On average two laborers set 140 m2/hr (1500 sf/hr)

  • Layout complies with a grid system
  • Each Cupolex WINDI® Form has an installation arrow
  • Forms are Installed by starting from left to right and top to bottom
  • Ensure that the feet connection pins are correctly inserted into their holes
  • Cupolex WINDI® can be easily cut to fit any floor plan
  • Pouring and finishing of the concrete slab in the conventional manner

Form TypeOverall Form DepthPlan Dimension InstalledConcrete Consumption To Top of DomesClear Void EquivalentDead Load of Concrete Structure to Top of DomesData SheetCAD Block
cm (inch)cm (inch)m3/m2 (cy./sq.ft.)cm (inch)kPa (psf)
CUPOLEX WINDI 5-565 (2")56x56 (22"x22")0.008(0.0010)4 (1.57")0.19 (3.96)PDFDWG
CUPOLEX WINDI 10-5610 (4)56x56 (22"x22")0.030(0.0036)7 (2.76")0.71 (14.82)PDFDWG
To begin using the CUPOLEX® for your project, visit our CUPOLEX SOLUTIONS page for a step-by-step road map on using this product.

Watch Video to See How Windi is Installed

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