Back tack welds on JM thermoplastic membrane systems

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Abstract
The practice of tack welding the back edge of the lap in mechanically fastened thermoplastic roof systems (back tacking) is to be avoided.

Date
1/2006

Author(s)
Johns Manville

Page(s)
1

Source
Johns Manville

Keyword(s)
Johns Manville; bulletin T06-001; back tack weld; thermoplastic membrane

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