Johns Manville Fiberglass Insulation Asbestos

In 1959 johns manville started to produce fiberglass and in 1972 it became a leading manufacturer of cement and pvc pipes.

Johns manville fiberglass insulation asbestos.

The manville covering company was founded in 1886 in milwaukee wisconsin and began manufacturing asbestos heat insulation. Company holds solid position as one of the nation s leading manufacturers of fiber glass asbestos cement pipe and polyvinyl chloride pvc pipe. Jm unfaced formaldehyde free fiberglass insulation offers r values ranging from r 11 to r 38 as well as effective thermal and noise control. In 1886 charles manville ran manville covering company which produced asbestos pipe insulation and soon helped to sell.

Block insulation 1940 1970 brick strip paper. The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation. Johns manville corp asbestos the magic mineral 8 mb pdf johns manville on the occasion of its 100th anniversary when in 1958 the company described its use of mineral slag obtained as a byproduct from metal refining beginning as early as 1928 and producing mineral wool. 352 insulating cement 1922 1973 85 magnesia block insulation 1902 1970 85 magnesia cement.

Johns manville sales exceed 1 billion. Our unfaced fiberglass insulation is available in pre cut batts for standard sized wall cavities and in rolls that can be cut to fit any size cavity. The products manufactured ranged from roofing and insulation to acoustical products and cement. Johns manville climate pro formaldehyde free blow in fiberglass insulation offers thermal and sound control along with fire resistance.

Engineered for professional use with high volume blowing machines it s ideal for attics nonconforming spaces and hard to reach areas making the job faster and easier. 7m 13 raw asbestos fibers. Johns manville s asbestos legacy. Johns manufacturing company and manville covering company worked on developing asbestos goods.

Johns manville moves world headquarters from new york to denver colorado and opens the johns manville technical center in littleton colorado. If your attic or wall insulation is in batt or blanket form whether it s fiberglass cellulose or another material you generally don t have to be concerned about asbestos. Quoting from that document. One bag of climate pro provides 73 square feet of r 30 coverage.

Johns manufacturing company was founded in new york in 1858 and used asbestos to manufacture fire resistant roofing. Before the merger in 1901 both h w. In 1868 henry ward johns received his first patent for an asbestos product after spending years developing roofing materials in his basement. In addition our proprietary auto jacketer ensures consistency during production and installation resulting in a tighter.

Loose fill insulation comes in a variety of materials. Calsilite block insulation 1947 1971 calsilite block insulation navy only.