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Loose cellulose, fibreglass (both blown and in batts), and rock wool (both blown and in batts) all possess an R-value of roughly R-2.5 to R-4 per inch. Straw bales perform at about R-2.38 to 2.68 per inch, depending on orientation of the bales. [42] However, typical straw bale houses have very thick walls and thus are well insulated. Snow is ...
This is a list of insulation materials used around the world. Typical R-values are given for various materials and structures as approximations based on the average of available figures and are sorted by lowest value. R-value at 1 m gives R-values normalised to a 1 metre (3 ft 3 in) thickness and sorts by median value of the range.
Rockwool was the world's largest maker of insulation materials in 2009, [6] but had fallen to the second largest by 2016. [7] As of 2009 [update] , 90% of the company's revenue came from the sale of insulation products, while 80% came from sales in Europe.
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Mineral wool is any fibrous material formed by spinning or drawing molten mineral or rock materials such as slag and ceramics. [1] Applications of mineral wool include thermal insulation (as both structural insulation and pipe insulation), filtration, soundproofing, and hydroponic growth medium.
Rock mineral wool 0.034 −0.042 List [50] Wallboard, see Wallboard. 1960s Values Dry Zero − Kapok between burlap or paper density 0.016 g cm −3, TC=0.035 W⋅m −1 K −1 Hair Felt − Felted cattle hair density 0.176 g cm −3, TC=0.037 W⋅m −1 K −1 density 0.208 g cm −3, TC=0.037 W⋅m −1 K −1 Balsam Wool − Chemically ...
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