Gelcoat Surface Finish

Gelcoat is a protective and aesthetic surface layer applied to composite materials, particularly the fibreglass structures of hot tubs, pools and cooling tubs. It is a special polymer resin applied as the first layer in the mould, before the fibreglass reinforcement is applied. Once cured, it forms a smooth, non-porous and durable surface that is in direct contact with water and the outdoor environment. Gelcoat protects the structural material from moisture, UV radiation and chemical damage. At the same time, it provides an aesthetic appearance, colour stability and easy maintenance. It is a standard technology in quality composite wellness products and the marine industry.

Advantages of gelcoat finishing

• High resistance to water and chemicals: Protects the structure against moisture ingress and degradation caused by disinfectants.
• Smooth, hygienic and easy-to-clean surface: Dirt and micro-organisms adhere to the surface significantly less than on porous materials.
• Long-term colour and visual stability: Resists UV radiation, preventing fading, yellowing or loss of gloss.
• Protection of the product’s structural integrity: Extends the service life of the composite structure by insulating it from external influences.