Plastic light well made of glass fibre reinforced polyester (GRP) or glass fibre reinforced polypropylene (PP-GF), manufactured as a prefabricated part in U-shape with bottom. Special dimensions and shapes are rare. The shaft is usually anchored directly to the concrete or brick basement wall or fastened via heavy-duty anchors. Spacers bridge the strength of thermal insulation applied to the outer wall of the basement on site. The height can be adjusted via stackable attachment elements. Reinforced shaft bodies are available for particularly high earth pressure.
This type of light well can also be used as a waterproof version in the case of water pressing from the outside, on an uninsulated concrete wall or on an insulated concrete wall in conjunction with pressure-tight system insulation in the connection area of the light well.
Source: bauwion
