ETFE Greenhouse Film or Polycarbonate Sheets

ETFE Greenhouse Film or Polycarbonate Sheets? Why ETFE Is the More Future-Ready Solution

When building a new greenhouse or modernizing an existing one, one fundamental question always arises: glass, polycarbonate, or film? For decades, twin-wall polycarbonate sheets were considered a solid solution. Today, however, ETFE films such as NOWOGREEN® ET are setting new standards in greenhouse construction.

A closer look at the facts shows why switching to ETFE pays off for greenhouse operators.

ETFE vs. Polycarbonate: The Key Differences

A Self-Cleaning Surface That Reduces Operating Costs

One decisive advantage of ETFE over polycarbonate is its low surface tension, which gives the material self-cleaning properties. Dust and dirt hardly adhere to the surface and are largely washed away by rain, similar to the lotus effect. This also helps prevent algae growth, which must be repeatedly removed from polycarbonate sheets.

The self-cleaning effect of ETFE film ensures consistently high light transmission with low cleaning costs. To maintain high light output, polycarbonate sheets require regular cleaning.

Maximum Light Transmission for Higher Yields

Light transmission is one of the most important factors in professional greenhouse construction. Plants need as much natural light as possible to support efficient photosynthesis and achieve optimal yields.

ETFE films achieve light transmission levels of more than 94% and retain these values almost unchanged for decades. Polycarbonate sheets, by contrast, continuously lose transparency due to UV exposure, surface ageing, and dirt build-up.

Longer Service Life for Long-Term Investment Security

ETFE film offers exceptional resistance to environmental stressors such as hail and wind, UV radiation, which prevents yellowing, and chemicals. Both ETFE film and polycarbonate sheets are highly resilient and, compared with glass or PE film, offer high elongation at break. With an elongation at break around four times higher than polycarbonate, however, ETFE film is virtually indestructible. Thanks to its high mechanical strength, ETFE film therefore offers a longer service life.

Efficient Condensation Management

Condensation can affect plant quality and promote fungal diseases. Modern ETFE greenhouse films such as NOWOGREEN ET feature permanent anti-drip properties, preventing condensation from dripping onto plants and allowing it to drain away in a controlled manner.

The benefits:

lower risk of disease and fungal infection
improved plant quality as a result
reduced pesticide use
the option to reuse condensate water

Fully Recyclable

Sustainable greenhouse construction is becoming increasingly important. Thanks to its full recyclability, long service life, and low material use, ETFE film contributes to resource efficiency and a circular economy.

Recycling polycarbonate sheets is difficult due to their composition and processing, as multiple materials must be separated. NOWOGREEN ET can be returned 100% to its original raw material.

Geringeres Gewicht und mehr Konstruktionsfreiheit

ETFE films weigh only a fraction of comparable polycarbonate structures. This creates significant advantages and opens up new possibilities in construction:

lighter supporting structures
lower material costs
simplified installation
larger spans
innovative architectural design options

Conclusion: Why ETFE Is the Future of Greenhouse Covering

The comparison between ETFE film and polycarbonate sheets clearly shows that modern ETFE systems outperform polycarbonate in many key areas.
ETFE offers:

higher light transmission
permanently transparent surfaces
self-cleaning properties
outstanding hail resistance
lower maintenance costs
a longer service life
greater sustainability
full recyclability
higher cost-effectiveness across the entire life cycleFor operators, investors, and planners focused on maximum yields, long-term cost-effectiveness, and sustainable technologies, ETFE is therefore the forward-looking alternative to polycarbonate sheets.