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Understanding Hazards & Precautions

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Expert Guidance

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Skin and Eye Contact:

Many materials used in fibreglass work are corrosive, or have some undesirable affect on the skin. The simple answer is not to allow any materials to come in contact with the skin at all. Plastic gloves and barrier creams should be worn at all times. Catalyst (hardener) used for polyester resins is an organic peroxide (methyl ethyl ketone peroxide) and is particularly dangerous. Use the correct dispenser for measuring, and be especially careful when handling this substance. Take great care not to get it in the eyes or mouth. If catalyst is splashed in the eye, irrigate under running water for at least 15 minutes, whilst summoning medical aid. Acetone and brush cleaner are powerful grease solvents. If these come into contact with the skin, they can destroy the natural oils and may lead to an unpleasant form of dermatitis. For this reason, brush cleaner should not be used for removing resin from the skin. Resin should be removed with industrial resin hand cleaner such as Kleen All paste then wash in soapy water. If polyurethane foam mixes get on the skin, wash off IMMEDIATELY. Once hardened it is difficult to remove. The re-meltable flexible moulding compounds also need particular care in handling. Their melting point is very high and, should the molten material come into contact with the skin, severe burns can result. None of these materials should ever be swallowed, nor should they be stored in lemonade bottles or other drinking containers.

Ventilation:

Many fibreglass products give off fumes which can be harmful if inhaled in sufficiently large quantities. In normal DIY use, reasonable ventilation of the work area will be adequate. Care should be taken particularly when using polyurethane foam mixes. These produce iso-cyanate fumes during the initial reaction. If overcome by these fumes, the user should be removed to hospital. With most materials, over-exposure to fumes will result in nasal irritation and watering eyes, eventually followed by drowsiness and possible unconsciousness. The simply remedy is to remove the patient to fresh air. If he does not revive at once, summon medical aid. When machining finished items in cast resin or laminated fibreglass, the tiny particles of fibreglass or resin can be dangerous to the eyes and lungs. When filing, sawing or drilling, always wear goggles and a respirator/face mask.

Fire:

Many resins and associated products are either inflammable, or contain inflammable additives. Styrene (used as a thinner in resins), catalyst and acetone (brush cleaner) are particularly dangerous. Do not smoke or use naked lights, oil burners or similar heating devices in the working area. If a fire does start, do not attempt to put it out with water. Dry powder extinguishers can be used on accelerator, polyurethane foam, mould cleaner, acetone, resins and release agents. The only exception is catalyst, this must be extinguished with water. Fires can be started if catalysed, but uncured, resins are thrown away. The wasted resin will continue to cure and the heat generated by the curing process can ignite other waste materials. Leave unwanted resin in a safe place until it has cured. It can then be discarded without risk.

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Important Information

Most fibreglass materials are perfectly safe to use, providing the potential hazards are recognised and reasonable precautions adopted. Normally you will have no problems if you follow these simple rules:

Do not let any materials come into contact with the skin, eyes or mouth.
Do not inhale mists or vapours-always work in a well ventilated area.
Do not smoke or use naked flames in the working area.

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Fire Safety

Ensuring a safe working environment when handling resins is paramount; always remember that prevention is your best ally against potential fire hazards. Equip your workspace with appropriate fire extinguishers, and familiarize yourself with the materials at hand, as each may require specific response techniques. Maintain vigilance by eliminating any sources of ignition such as open flames or heated elements, while also being mindful of the disposal of uncured resins, which can pose a hidden threat if not treated properly. Stay informed and proactive, and you will navigate the complexities of resin usage with confidence and care.

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Spillage Management

Effective spillage management is crucial in maintaining a safe workspace when working with resins and catalysts. While minor spillages can typically be handled by absorbing them with sand or earth, catalysts require special attention; they should never be mopped up but instead diluted with ample water to mitigate risks. The best approach, however, is to proactively implement measures that prevent spills from occurring in the first place, such as using proper containers and tools, ensuring all team members are trained in safe handling practices, and maintaining a clean and organized workspace. By prioritizing these precautions, you create a safer environment that protects both you and your materials.

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