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:
- âGrowing rockwool: Larger fibers, safer to use
- âInsulation rockwool: Finer fibers, more caution needed
- âDifferent production processes and applications
Safety of Growing Rockwool
Horticulture rockwool has specific properties that make it safer:
- âLarger fiber diameter (>5 Îŧm)
- âNot respirable (too large to inhale)
- âNo WHO carcinogen classification
- âMeets EU safety standards
Recommended Precautions
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Wear gloves during intensive contactđ
Use long-sleeved work clothingđˇ
Dust mask when cutting/processing (optional)đŋ
Wash hands after useđ¨
Work in well-ventilated areađ§š
Keep workspace cleanWhen to Be Extra Careful?
- â ī¸When cutting or processing rockwool
- â ī¸In dusty environments
- â ī¸With sensitive skin or airways
- â ī¸When processing large quantities
Symptoms of Excessive Exposure
- âšī¸Mild skin irritation (temporary)
- âšī¸Itching (disappears after washing)
- âšī¸Mild eye irritation (during dusty work)
- âšī¸Throat 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.