I’m going to be installing attic insulation. I haven’t decided on fiberglass or cellulose. I know I’m supposed to use something fire resistant like vermiculite around the chimney flue. Do I need to take the same steps around electrical junction boxes and lighting fixtures in the ceiling?
Use Roxul Insulation. It is a noncombustible mineral wool insulation. It is approved for continuous use at 1200ºF and melts at 2150ºF and never catches fire. Other bonuses to Roxul are it is water repellent, does not sustain the growth of mold or mildew and will not lose R-value.
This product has been in use since the 30’s in Europe and is a proven product.
November 7th, 2009 at 7:53 pm
Recessed lights come in two types insulation contact and non insulation contact. as far as the junction boxes, no need to worry. just cover everything. Don’t forget to use insulation baffles at the eaves, so that proper ventilation is maintained.
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November 7th, 2009 at 8:34 pm
Drewfuss is correct about the two types of recessed lighting fixtures, the junction boxes, and the baffles. I would add that non-insulation contact recessed lighting require airspace to prevent damage to the fixture, not primarily as a fire safety measure.
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November 7th, 2009 at 9:01 pm
Drew and Steven are right on.
Fiberglass and cellulose will not burn. Code requires that all insulation be fire-proof.
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Building contractor.
November 7th, 2009 at 9:13 pm
Use Roxul Insulation. It is a noncombustible mineral wool insulation. It is approved for continuous use at 1200ºF and melts at 2150ºF and never catches fire. Other bonuses to Roxul are it is water repellent, does not sustain the growth of mold or mildew and will not lose R-value.
This product has been in use since the 30’s in Europe and is a proven product.
References :
Insulated my house with Roxul batt insulation