| Author |
Message |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1060
Registered: 05-2003
| | Posted on Wednesday, February 26, 2014 - 01:30 pm: |    |
We specified unfaced batt insulation for interior partitions of an apartment project, some walls are rated, some are not; the GC wants to use faced fiberglass batt insulation, because he claims there will be a savings in labor time. This is a JM product and the unfaced insulation meets flame spread requirements of the spec and ASTM E94, the faced insulation does not. I refused to approve it, however the architect has asked me to reconsider...I have no idea why?
If there is no concern about vapor barrier, what is the difference between using faced and unfaced batt insulation in an interior partition other than flame spread? |
Dave Metzger
Senior Member
Username: davemetzger
Post Number: 496
Registered: 07-2001
| | Posted on Wednesday, February 26, 2014 - 01:48 pm: | |
In fire-rated partitions, the type of insulation used in the tested assembly must be used.
In non-fire-rated partitions, even if faced insulation is used, if the joints between batts are not taped, the facings will effectively not be a vapor retarder. |
Tomas Mejia, CCS, CCCA, LEED
Senior Member
Username: tmejia
Post Number: 52
Registered: 09-2003
| | Posted on Wednesday, February 26, 2014 - 11:48 pm: | |
Is it wood framing?
Kraft faced insulation has stapling tabs for quick attachment to wood framing.
Unfaced insulation is friction fit vertically. Horizontal applications may require wire rod, chicken wire or wire to hold it in place. |
Jerome J. Lazar, RA, CCS, CSI, SCIP
Senior Member
Username: lazarcitec
Post Number: 1061
Registered: 05-2003
| | Posted on Thursday, February 27, 2014 - 12:12 am: | |
Tommy, long time bro, hope all is well with you and family, Grace must be sweet 16 by now, any hair left in your head? Send me an email to catch up.
BTW, Metal studs are standard for interior partitions on this project. |
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