| Author |
Message |
Jeff Leemhuis
Senior Member
Username: jrlbarch
Post Number: 39
Registered: 07-2005
| | Posted on Friday, July 14, 2017 - 02:40 pm: |    |
Low rise multi-story office building with an open parking garage area below the second floor. Considering Monoglass Spray-On Insulation to the cast-in-place concrete garage ceiling, but need to apply this material over a spray-applied vapor retarder. Anyone with knowledge of acceptable products? |
Jeffrey Wilson CSI CCS SCIP
Senior Member
Username: wilsonconsulting
Post Number: 219
Registered: 03-2006
| | Posted on Friday, July 14, 2017 - 03:54 pm: | |
K-13 Spray-On Insulation (cellulose) is the product I see most often. I don't know about its compatibility w/ spray-applied vapor retarder, and am not familiar w/ such products.
The manufacturer claims K-13 offers "condensation control" but I have not seen specific vapor reduction performance data in their literature.
Jeffrey Wilson CCS CSI SCIP
Wilson Consulting Inc
Ardmore PA |
Jeffrey Wilson CSI CCS SCIP
Senior Member
Username: wilsonconsulting
Post Number: 220
Registered: 03-2006
| | Posted on Friday, July 14, 2017 - 03:57 pm: | |
I meant to say it might be possible that the insulation material itself would provide sufficient vapor retardance, eliminating the need for a separate VR.
Jeffrey Wilson CCS CSI SCIP
Wilson Consulting Inc
Ardmore PA |
J. Peter Jordan
Senior Member
Username: jpjordan
Post Number: 980
Registered: 05-2004
| | Posted on Friday, July 14, 2017 - 07:16 pm: | |
I cannot imagine that K-13 would have any vapor retarding properties. I would not think that a vapor retarder would be required over the cast-in-place concrete.
I have specified K-13 on a number of projects under similar conditions.
J. Peter Jordan, FCSI, AIA, CCS, LEED AP, SCIP
|
Michael Chusid, RA FCSI CCS
Senior Member
Username: michael_chusid
Post Number: 299
Registered: 10-2003
| | Posted on Friday, July 14, 2017 - 07:31 pm: | |
I am trying to understand your situation.
1. Which way is the controlling vapor drive? Are you trying to protect against condensation in the garage because it is hot and humid and the space above is refrigerated? Or is it a warm humidified interior being protected from a freezing garage?
2. What is the deck?
3. What is the floor finish above and how is it applied?
Michael Chusid, RA FCSI CCS
www.chusid.com www.buildingproduct.guru 818-219-4937 |
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