How Durable Are Sandwich Panels in Coastal or Rainy Regions?

Coastal or rainy regions often experience high salt spray, high humidity, strong ultraviolet radiation, and frequent rainfall, which directly accelerate the corrosion, aging, core material moisture absorption, and sealant aging of sandwich panels.

The durability of sandwich panels with different core materials and coatings varies in coastal/rainy regions, as compared below:

1. Fluorocarbon coated high-zinc PIR sandwich panel: Service life 15-25 years, up to 25 years with regular maintenance; ideal for cold storage, industrial plants, and clean rooms in coastal high-salt-spray and tropical rainy areas;

2. Polyester coated ordinary galvanized PU sandwich panel: Service life 8-10 years, 10-15 years in inland rainy areas; suitable for ordinary factories and warehouses in inland rainy areas;

3. Polyester coated rock wool sandwich panel: Service life 5-8 years; insulation performance significantly decreases after 3-5 years in high humidity environments. This product is only suitable for ordinary factory buildings in dry areas and is not recommended for use in coastal or rainy areas.

In summary, for coastal and rainy regions, it is recommended to choose PIR sandwich panels with a high zinc layer and fluorocarbon coating. Their durability fully meets the needs of the building's entire life cycle, making them the optimal choice for steel structure building envelope systems, especially suitable for building scenarios in tropical coastal and rainy countries in Southeast Asia such as Indonesia.