Is Rockwool Harmful to Lungs?
An important question for professionals working with rockwool. Here you'll find all facts about safety and health.
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The Short Answer
Horticulture rockwool is generally safe when you take normal precautions. Modern rockwool plugs contain no harmful fibers that are dangerous to lungs.
Difference with Insulation Rockwool
It's important to distinguish between growing rockwool and insulation rockwool:
- โGrowing rockwool: Larger fibers, safer to use
- โInsulation rockwool: Finer fibers, more caution needed
- โDifferent production processes and applications
Safety of Growing Rockwool
Horticulture rockwool has specific properties that make it safer:
- โLarger fiber diameter (>5 ฮผm)
- โNot respirable (too large to inhale)
- โNo WHO carcinogen classification
- โMeets EU safety standards
Recommended Precautions
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Wear gloves during intensive contact๐
Use long-sleeved work clothing๐ท
Dust mask when cutting/processing (optional)๐ฟ
Wash hands after use๐จ
Work in well-ventilated area๐งน
Keep workspace cleanWhen to Be Extra Careful?
- โ ๏ธWhen cutting or processing rockwool
- โ ๏ธIn dusty environments
- โ ๏ธWith sensitive skin or airways
- โ ๏ธWhen processing large quantities
Symptoms of Excessive Exposure
- โน๏ธMild skin irritation (temporary)
- โน๏ธItching (disappears after washing)
- โน๏ธMild eye irritation (during dusty work)
- โน๏ธThroat irritation (in extreme dustiness)
Note: These symptoms are mild and temporary. Serious health problems are very unlikely with normal use.
Conclusion
Horticulture rockwool is safe to use when you take basic precautions. The fibers are too large to be inhaled and pose no health risk. Wear protective clothing during intensive contact and you're safely protected.