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FRP Step Ladder vs Conventional Ladder: Which is More Chemically Resistant?
OLine
May 15, 2025
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In heavy industries such as chemical plants, oil refineries, or waste treatment facilities, work equipment is required to have high resistance to aggressive chemicals. One essential tool frequently used for working at height is the ladder. But are all types of ladders safe to use in such extreme environments?

This article compares two commonly used types of ladders: conventional metal ladders (aluminum and steel) and Fiberglass Reinforced Plastic (FRP) step ladders, specifically in terms of resistance to chemicals and corrosion.

Metal Ladders: Strong but Prone to Corrosion
Metal ladders are known for their strength and stability, but they have major weaknesses in environments exposed to chemicals:

  • Steel is easily corroded when exposed to acid vapors or corrosive chemical solutions.

  • Aluminum, though rust-resistant, can still oxidize or corrode when in contact with substances like sulfuric acid, strong alkalis, or chloride salts.

  • Continuous chemical exposure not only shortens the ladder’s lifespan but also poses safety risks, such as slippery surfaces, weakened components, and potential structural damage.

FRP Ladders: Corrosion Resistant, Chemically Durable, and Safer
FRP (Fiberglass Reinforced Plastic) is a composite material made from glass fiber and resin, specially designed to withstand extreme environmental conditions. Its advantages include:

  • Resistant to corrosion and heavy chemicals, including strong acids, alkalis, industrial solvents, and chemical vapors.

  • Non-absorbent surface that does not accelerate degradation or damage from moisture.

  • Does not undergo chemical reactions that weaken the structure as metals do.

  • Non-conductive – FRP is an insulator, making it much safer to use in work environments at risk of electrical short circuits, unlike metal ladders which are conductive.

  • Lighter than metal ladders, making it easier to move and mobilize in large or multi-level work areas.

Real-World Applications in Extreme Environments
The advantages of FRP step ladders are especially evident in harsh working conditions such as:

  • Used in areas with chemical spills, remaining safe even when exposed to liquids like HCl or NaOH.

  • Resistant to chemical vapors and corrosive gases in enclosed spaces.

  • Unaffected in outdoor areas exposed to acid rain, sea salt, and UV rays.

  • Ideal for high-humidity environments such as waste treatment areas or offshore facilities.

Why FRP Step Ladders Are Superior
Below are the advantages of FRP step ladders compared to conventional ladders in terms of chemical resistance and work safety:

  • Acid resistance: FRP is highly resistant to various strong acids, while metal ladders are prone to corrosion.

  • Corrosion resistance: FRP does not rust, even in high humidity or chemical vapor environments.

  • Non-conductive: Ensures greater safety when working near electrical equipment or open installations.

  • Longer lifespan: Can last up to 15–20 years in heavy-duty environments.

  • Lower safety risks: Not brittle due to corrosion, remains sturdy and stable for regular use.

  • Lightweight: Easier to mobilize, transport, and position in changing work locations.

  • Lower maintenance costs: No need for regular maintenance like anti-rust coating on metals.

If chemical resistance, workplace safety, and long-term efficiency are priorities, then the FRP step ladder is a superior choice compared to conventional metal ladders.