Johns Manville Fiberglass Insulation Asbestos

This process results in a uniform fiberglass core that delivers consistent performance during fabrication and installation.

Johns manville fiberglass insulation asbestos.

The types of insulation that were most commonly made with asbestos are loose fill also called blown in insulation. Johns manville s asbestos legacy. The manville covering company was founded in 1886 in milwaukee wisconsin and began manufacturing asbestos heat insulation. From its start the johns manville corporation used asbestos in manufacturing its products up until 1985.

The products manufactured ranged from roofing and insulation to acoustical products and cement. 7m 13 raw asbestos fibers. Jm unfaced formaldehyde free fiberglass insulation offers r values ranging from r 11 to r 38 as well as effective thermal and noise control. Loose fill insulation comes in a variety of materials.

Johns manville climate pro formaldehyde free blow in fiberglass insulation offers thermal and sound control along with fire resistance. 352 insulating cement 1922 1973 85 magnesia block insulation 1902 1970 85 magnesia cement. Johns manville sales exceed 1 billion. Calsilite block insulation 1947 1971 calsilite block insulation navy only.

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. In 1868 henry ward johns received his first patent for an asbestos product after spending years developing roofing materials in his basement. In 1886 charles manville ran manville covering company which produced asbestos pipe insulation and soon helped to sell.

Before the merger in 1901 both h w. One bag of climate pro provides 73 square feet of r 30 coverage. In 1959 johns manville started to produce fiberglass and in 1972 it became a leading manufacturer of cement and pvc pipes. 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.

Johns manville micro lok hp fiberglass pipe insulation is manufactured using the latest technology and our unique in line manufacturing process. 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. 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. Quoting from that document.

Block insulation 1940 1970 brick strip paper. Company holds solid position as one of the nation s leading manufacturers of fiber glass asbestos cement pipe and polyvinyl chloride pvc pipe.