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glass wool

   Also found in: Dictionary/thesaurus, Wikipedia 0.03 sec.
glass wool [¦glas ′wu̇l]
(materials)
A mass of glass fibers resembling wool and used as insulation, packing, and air filters.

glass wool, glass silk
Spun glass fibers in bulk form; resembles wool; used as thermal insulation, in air filters, and in fabricating fiberglass blankets, boards, and tile. Also see mineral wool, fiberglass.


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Now the standard recommendation is 220mm for cellulose insulation, 250mm for rock wool insulation and 270mm for glass wool insulation.
Polyurethane, for example, has a high level of embodied energy per kilogram compared to stone or glass wool or wood fiber but in terms of megajoule per 100 square meters the amount of embodied energy in polyurethane is much lower than these other materials," he said.
In general however the common solutions are as follows: Attics and Roofs- Fiber Glass Wool (loose fill), Blankets, and batts.
 
 
 
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