GEKU is a brand name used in construction for products and systems relating to basement light shafts, light tubes, cover grids and floor and cellar hatches. These are building elements that bring daylight and ventilation into lower-lying spaces and that safely cover openings in floors or against cellar walls.
Application
A basement light shaft, sometimes called a window well, is a box fitted against the cellar wall at ground level. It allows daylight to reach a basement window while also providing air supply. Products in this category are usually made of plastic, glass-fibre reinforced material or concrete, depending on the required strength and load.
Characteristics
A cover grid is often placed on top of a light shaft. It keeps out leaves, dirt and vermin while letting light and air through. Grids are available in walk-on and drive-over versions. Floor and cellar hatches close off openings in a floor, for example to access a crawl space or plant room, and can be finished flush (recessed) or watertight where required.
For light shafts, good drainage is important: a connection to the sewer or to infiltration prevents the shaft from filling with water during rain. The connection to the facade and the cellar waterproofing must be watertight.
Always consult the manufacturer’s current product information for exact dimensions, materials and load classes.
Related terms
- Basement light
- Koekoek
- Crawl space
- Ventilation
- Cellar
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