Liquid Catalyst Hardener - 5kg
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Professional Building SuppliesCromar Liquid Catalyst/ Hardener - 5Kg
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Product Information
Full details
The ProGRP Liquid Catalyst Hardener is an essential component for professional roofers and DIY installers working with GRP (Glass Reinforced Plastic) roofing systems. Its primary function is to trigger the polymerization process in resins and topcoats, ensuring a durable, weather-resistant finish. While it is highly effective at creating a solid, long-lasting roof, users must exercise caution during handling, as it is a potent chemical catalyst that requires precise mixing ratios to avoid curing failures.
All features
| Model Part Number | HARD5 |
|---|---|
| Brand | Cromar |
Extended Product Information
FAQs
How much hardener do I use for 200kg of topcoat?
The 5kg tub is designed to catalyze 200kg of topcoat, following the manufacturer's specified ratios.
Can I use this with any brand of resin?
No, this hardener is specifically designed for the ProGRP roofing system to ensure chemical compatibility.
What happens if I mix too much hardener?
Adding too much hardener can cause the resin to 'exotherm' or cure too rapidly, which may lead to cracking or a brittle finish.
Does the temperature affect how much hardener I need?
Yes, ambient temperature plays a significant role in curing times. Always adjust your mixing ratios based on the temperature guidelines provided in the ProGRP installation manual.
How should I dispose of the container?
The container and any residue must be disposed of in accordance with local environmental regulations regarding hazardous chemical waste.
Is this hardener safe to handle?
It is a chemical catalyst and must be handled with standard PPE including gloves and eye protection. Avoid inhalation of vapors and skin contact.
Troubleshooting
Resin or topcoat is not curing or remains tacky
Check if the ambient temperature was too low or if the incorrect ratio of hardener was mixed into the resin.
Mixture is hardening too quickly in the bucket
Reduce the amount of catalyst used, or work in smaller batches during high-temperature conditions.
Pros and Cons
Pros
- Excellent coverage ratio (1:40 ratio for 200kg of product)
- Specifically calibrated for ProGRP resin systems
- Ensures a chemically bonded, waterproof seal
- Essential for achieving a long-lasting, professional roof finish
Cons
- Requires careful storage away from heat and direct sunlight
- Potentially hazardous chemical that requires appropriate PPE
- Strict mixing ratios must be followed to avoid improper curing
- Not intended for use with non-GRP specific resin systems
Setup, Compatibility & Care
For optimal results, ensure the work area is clean and free of moisture before mixing. Always wear gloves, safety goggles, and protective clothing when handling the catalyst. Store the container in a cool, well-ventilated, and dry area, keeping it tightly sealed when not in use. It is strictly compatible with the ProGRP roofing system and should not be mixed with other brands or types of resins unless specified. If the catalyst contacts the skin, wash immediately with soap and water.
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