.... Just stick a wooden front skinned in good thick material to prevent shedding hazerdous rock wool into your lungs, great for singers.
I know this is 6 days old, but I just wanted to clear up a MISCONCEPTION;
Rock Wool is not hazardous. If it were I would have been dead long ago, as well as many performers, musicians, builders, etc. The Roxul Material Safety Data Sheet - which is typical of all rock wool products (which I cannot attach - Strange not being able to attach a pdf file...) I'll quote below:
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3. Hazards Identification:
3.1 Appearance and Odor: Grey, green fibrous batt or board.
3.2 Emergency Overview: Acrid smoke may be generated during a fire.
Exposure to dust may be irritating to the eyes, nose and throat.
3.3 Potential Health Effects:
3.3.1 Inhalation: Temporary mechanical irritation of the upper respiratory tract (scratchy throat, coughing, congestion) may result from exposures to dusts and fibers in
excess of applicable exposure limits.
3.3.2 Skin Contact: Dusts and fibers may cause temporary mechanical irritation (itching) or redness to the skin.
3.3.3 Eye Contact: Dusts and fibers may cause temporary mechanical irritation (itching) or redness to the eyes.
3.3.4 Ingestion: Ingestion of this product is unlikely and not intended under normal conditions of use. Ingestion of this product may cause gastrointestinal irritation.
3.3.5 Existing Medical Conditions: Pre-existing chronic eye, skin and respiratory conditions may temporarily worsen due to exposure to dusts and fibers.
4. First-Aid Measures:
4.1 Inhalation: If irritation occurs, remove the affected person to fresh air. Drink water, and blow nose, to clear dusts and fibers from throat and nose. If irritation persists, consult a physician.
4.2 Skin: If irritation occurs, do not rub or scratch. Rinse under running water prior to washing with mild soap and water. Use a washcloth to help remove fibers. If irritation persists, consult a physician.
4.3 Eyes: If irritation occurs, flush eyes with plenty of water for at least 15 minutes. Do not rub the eyes. Consult a physician if irritation persists.
4.4 Ingestion: Ingestion of this product is unlikely and not intended under normal conditions of use. If it does occur, rinse mouth with plenty of water to help remove dust and fibers, and drink plenty of water to help reduce potential gastrointestinal irritation. Do not induce vomiting unless directed to do so by a physician.
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Nowhere does is mention being a HAZARD. This is a ridiculous rumor perpetuated by Alarmists on the internet.
Rock wool is predominately Basalt rock, while Fiberglass is predominately silica sand (same a glass). The are both made the same way... like cotton candy. A 'less-irritating' product might be Ecose stuff, but beware of some of these so-called 'new products' that claim to be safer, like Ultra Touch Denim fiber - Here is the MSDS for that! (BEWARE)
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Section II – Composition and Ingredient Information
recycled fiber, binder fiber, boric CAS NO: 10043-35-3, ammonium Sulfate.
100% boric acid is hazardous under the OHSA Communication Standard base upon animal chronic toxicity studies.
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plus THE FACT that there is NO acoustical testing data. This stuff is dense and heavy not unlike cellulous fiber and most likely performs similarly.
There you have it.
Cheers,
John
