What is fiberglass?

Fiberglass refers to glass-reinforced polyester (GRP), also known outside industrial contexts as glass plastic or fiber plastic. Fiberglass is a material highly valued for its exceptional strength, durability, and flexibility. It consists of glass fibers impregnated with resin, forming a durable and waterproof composite material.Due to its ability to withstand moisture, UV radiation, as well as high and low temperatures, fiberglass is widely used in various industries, including the manufacturing of watercraft and swimming pools.

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Fiberglass is a highly popular material for hot tub interiors because it effectively resists moisture and hot water, which are inevitable during hot tub use. Fiberglass interiors are smooth, visually appealing, and easy to maintain. The non-porous surface is easy to clean and prevents the growth of algae and other microorganisms.Fiberglass hot tubs are typically more durable than wooden alternatives. They do not deform or crack easily, ensuring a longer lifespan. Additionally, fiberglass hot tubs are lighter than wooden ones, making them easier to transport and install. The fiberglass molding process allows for creating various shapes and styles, enabling the design of the hot tub to be customized to meet customer preferences.Thanks to these qualities, fiberglass hot tubs have become a popular choice, offering both practical and elegant solutions for spas and home gardens.

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Advantages of fiberglass over other materials

  • The mold side has esthetically pleasant high gloss finishing that doesn’t need any paint finish.
  • Totally corrosion resistant and maintenance free fiberglass is extremely cost-efficient in case of long-term use.
  • Compared to pressure molding or cold working, processing costs are low.
  • Finishing includes different textures and a wide selection of colors.
  • Broken products can be fixed.
  • Fiberglass products have good chemical resistance.
  • Fiberglass has good electrical properties which makes it an excellent insulator.
  • GRP products are also good thermal insulators.
  • Mass production lowers prices which, compared to other options, are very competitive.
  • Fiberglass is versatile.

Advantages of fiberglass compared to galvanized steel

  • Corrosion resistance does not depend on the quality of zinc coating.
  • No threat of harming the corrosion resistant surface.
  • Mechanical strength
  • Special strength 2–4 times higher than the one of any other material, contributes to weight reduction.

Depending on purpose of use, the composition (for example, 70% fiberglass, 30% resin) of fiberglass allows to
reduce weight while maintaining the same level of strength, by:

  • 60% compared to stainless steel;
  • 65% compared to aluminum;
  • 75% compared to zinc plated steel.

Installation and compiling

Fiberglass products are easy to install and compile:

  • no need for grounding;
  • no need to test electrical conductivity;
  • easy to process (cut, drill) on site;
  • defects caused during installation are usually easy to fix.

Thermal and electrical insulation

  • Wonderful thermal insulation (heat conductivity is 1000 times lower than the one of aluminum).
  • No fire threat in case of exposure to other materials.
  • Great electrical insulation ( ~ 6 kV/mm).