Greenhouse construction must consider its durability. Greenhouse durability is affected by factors such as the aging resistance of greenhouse materials and the load-bearing capacity of the main greenhouse structure.
The durability of light-transmitting materials, besides their inherent strength, is also reflected in the continuous decrease in light transmittance over time. The degree of light transmittance decay is the decisive factor affecting the lifespan of light-transmitting materials.
Generally, steel structure greenhouses have a lifespan of over 15 years, designed for wind and snow loads up to 25 years per year, with maximum loads expected.
Simple bamboo and wood structure greenhouses have a lifespan of 5-10 years, designed for wind and snow loads up to 15 years per year, with maximum loads expected.
Because greenhouses operate in high-temperature and high-humidity environments for extended periods, surface corrosion protection of components becomes a crucial factor affecting the greenhouse's lifespan.
Steel structure greenhouses, whose main load-bearing structure generally uses thin-walled steel, have poor inherent corrosion resistance. In Polycarbonate Greenhouse, hot-dip galvanizing is required for surface corrosion protection.
A coating thickness of 150-200 micrometers or more can guarantee a service life of 15 years. For greenhouses with wooden or welded steel truss structures, surface anti-corrosion treatment must be carried out once a year.