DIY Home Improvement, Remodeling & Repair Forum > DIY Home Improvement > General Home Improvement Discussion > Fiberglass from attic pushed into house through light fixtures

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Old 07-14-2009, 08:26 AM  
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Default Fiberglass from attic pushed into house through light fixtures

My house is contaminated by fiberglass. A new roof was installed (shingles only) and the two old attic vents were replaced. Fiberglass is everywhere in my home. I've had the attic A/C ductwork and unit insprected twice, and each tech found no breach which would allow fiberglass to blow through the house. The globe fixtures have fiberglass inside them.

Please explain what I have been told: Negative pressure in the house forced the blown-in insulation from the attic into the house through the light fixtures.



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Old 07-14-2009, 09:24 AM  
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A professional should be along shortly to help you w/more accurate info. but, it is my understanding that attic ventilation needs to be balanced between the soffits and the gable or rooftop vents to create positive ventilation. In other words, in through the soffit vents and out through the rooftop vents. If this balance does not exist, your creating a no flow or negative pressure flow. Check to see if you have insulation blocking the soffit vents as this will cause a problem. The pros will let you know what ratio of soffit/rooftop openings you need to create and maintain a positive flow.
I feel for ya man, I hate fiberglass insulation w/a passion especially if it gets in your eyes.
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Old 07-14-2009, 09:31 AM  
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Thanks. The fiberglass in my house is in my furniture, my clothes, my bed, my light fixtures, in my shower, in my tub, on my stovetop, etc. It's everywhere except the attic ductwork of my A/C.
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