"Tenting" can be problematic regardless of where the vapor barrier is located.
The tent must remain intact for the life of the structure and by intact I mean free from being disturbed by anyone in the space (electrical, cable, satellite, other) and if there are holes or gaps from the install, settling of the insulation, or someone in there, the cold air gets in. The cold also can be drawn in through holes or gaps by mechanical equipment creating a negative in the structure such as bathroom exhaust fans, kitchen exhaust fans, furnaces, fireplaces, and so on and a combination of those all operating at the same time makes the condition worse. Be careful when you go this route. Scott Office: (763) 425-1001 x 2 Cell: (612) 759-5556 -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Charles Thurston Sent: Thursday, June 04, 2015 10:54 AM To: John Denhardt Subject: Re: Insulation of pipe in attics Hello John, Thank You. Those are good, but they are blowing in the insulation in the rest of the ceiling so they do not show the plastic sheeting under the batts of insulation. Thursday, June 4, 2015, 11:22:51 AM, you wrote: > Look at the NFPA Research Foundation report that covers insulation for > sprinkler piping. It has some very good details and pictures. > John > -----Original Message----- > From: Sprinklerforum > [mailto:[email protected]] On Behalf Of > Charles Thurston > Sent: Thursday, June 04, 2015 11:27 AM > To: [email protected] > Subject: Insulation of pipe in attics > Hello Sprinklerforum, > I have a project where they are using blown insulation in the attic. > Per the diagram I have seen many times I showed plastic sheeting > draped over the pipe and batt insulation on top of the plastic. The > insulation installers put the batt on the pipe and plastic over that. > Looking for the code section that describes it with the plastic under > the pipe. I looked at 13 which refers back to 13D that I do not have > here, Any help on the section with the diagram? -- Best regards, Charles mailto:[email protected] _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
