Radon barrier Sisalex 871

Radon barrier Sisalex 871

Application tips:

A gas barrier is used to prevent gaseous emissions that occur naturally in the soil (radon gas, methane, carbon dioxide and other harmful gases) or existing environmental pollution (landfill) in contaminated soil that penetrates from the foundation or basement ceiling, from the building to the living area, thereby protecting the occupants.

Laying

• on a clean layer between foundations
• on a clean layer under the floor slab (clean layer at least 5 cm)
• directly on the floor slab
• in the basement ceiling structure

Place the dark green side (weathering side) up and the PE or aluminum side against the surface. The joints must overlap by 15 cm and must be dry and free of dust and dirt for gluing. The same rules apply to the installation of a gas-tight vapor barrier: double-sided butyl tape for butt joints (sealing function) and application of acrylic adhesive tape over the top (mechanical fixation). Edges at walls, pillars and holes should be 15 cm high and sealed. Surfaces must be cleaned and all sharp, pointed areas and objects or mortar residues must be removed beforehand. Openings and offsets in the surface must be smoothed. The barrier must be protected immediately after installation by applying additional layers of construction.