Foundation foil
GEO 20
Eurovent® GEO 20 dimpled foundation and drainage membrane is made of high-density polyethylene (HDPE) and features a parallel arrangement of 20 mm high dimples. It is designed for waterproofing buildings and structures in vertical or horizontal applications. The membrane offers very high compressive strength, while its high dimples provide increased drainage capacity. It also creates an additional layer of thermal and acoustic insulation. It is resistant to acids, alkalis, solvents, bacteria, fungi and plant roots.
Advantages:
- For underground construction
- High compressive strength
- Groundwater level regulation
- Increased drainage capacity
- Resistant to solvents, acids, alkalis, bacteria, fungi and roots
Application and Technical Data
It is suitable for underground garages, tunnels, foundations in flood-prone areas and wherever there is a periodic risk of groundwater or seepage water affecting the structure. It can be installed with a slope between the foundation slab and screed to facilitate water drainage.
It can also be installed directly between a layer of shotcrete and a structural concrete wall, particularly where there is insufficient space for conventional formwork.
Documents
Fotos
System products
For maximum performance, GEO 20 should be used in combination with:
- Eurovent® filter geotextiles, which protect the drainage space against clogging and allow unrestricted water flow in drainage systems and underground construction,
- Eurovent® drainage and dewatering systems, which support groundwater level regulation and effective drainage of rainwater and seepage water away from the building structure,
- Eurovent® GEO LINE finishing profiles, which provide a tight and neat finish to the upper edge of the foundation membrane in vertical applications,
- Eurovent® GEO NAIL fixing nails, which provide durable and stable fixing of the membrane to protected surfaces,
- Eurovent® sealing tapes (e.g. GEO BUTYL), which improve the watertightness of joints and protect fixing areas against moisture penetration.
The use of complete Eurovent® system solutions ensures effective waterproofing, increased drainage capacity and high compressive strength, while protecting foundations and underground structures against moisture, seepage water and mechanical damage – even in the most demanding ground conditions.
GOOD TO KNOW
How does GEO 20 differ from a standard GEO 8 dimpled membrane?
Its 20 mm studs create a larger drainage space, making it suitable for more demanding protection and drainage systems.
Where can GEO 20 be used?
Around foundations, underground structures, garages, tunnels and other applications where the design requires high drainage capacity.
Can GEO 20 replace waterproofing?
No. It is a protection and drainage layer; the required waterproofing must be designed and installed separately.
Why combine GEO 20 with geotextile?
A filtration geotextile can reduce soil particles entering and clogging the drainage space.
Is GEO 20 alone enough to drain water?
No. It must work with a correctly designed drainage and water-discharge system.
