Johns Manville converted its Jacksonville, Fla., manufacturing facility to produce polyiso foam roof insulations with pentane, a non-ozone-depleting blowing agent.
Electronic copies of the technical standards and manuals developed by the Sheet Metal and Air Conditioning Contractors’ National Association can now be purchased in PDF format and downloaded instantly from www.smacna.org. Each publication listing features a comprehensive description, table of contents and an executive summary to assist customers in selecting the manual that best serves their needs. SMACNA’s more than 30 publications are also available in CD-ROM and traditional book formats.