In order to obtain an effective ventilation of the foundations, the air space must be connected to the outdoor environment: this is done by installing PVC pipes with a diameter of 80/120 mm in the perimeter foundations every 2.00/3.00 m roughly.

If there are several separate sections of the ventilation spaces, separated for example by stringcourses, these sections must be connected together to guarantee the free circulation of the air.

Installation

One particular characteristic of Kappax is how simple it is to install, thanks to the coupling system: once two elements have been connected they form a stable platform suitable for foot traffic on which you can lay the reinforcement and cast the concrete.

The shape and structure is fundamental, not only to support the weight of the screed or the floor also for considerable thicknesses (15-20 cm), but also to install small diameter pipes and plant engineering in general.

Installation method:

• prepare ground
• cast lean concrete layer
• prepare perimeter formworks
• install inlet and outlet pipes
• position distribution ducts
• position kappax from left to right and from the top down
• install ellex fermagetto casting side module (if required)
• lay arc-welded mesh
• cast slab and perimiter beams
• lay membrane
• install thermal insulation
• cast mortar screed
• install flooring

N.B.

• we recommend positioning the inlet and outlet pipes at different heights to increase the airflow as a result of the “flue” effect.
• install the pipes in a north-soouth direction if possible, or in any case on the two most ventilated opposite sides.
• use pvc inlet and outlet pipes with a minimum diameter of 110 mm every 2-3 m.
• if pipes of a larger diameter are used, they can be installed further apart.