How do you properly install insulweb on ceiling joists?
kevinkeegan
| Posted in GBA Pro Help on
I would like to install insulweb or a similar product on my ceiling joists in preparation for blowing in cellulose. I plan to sheet rock the ceiling when the insulation is completed. I have never worked with insulweb or blown in cellulose. I’m doing this for sound purposes. I plan to rent the blowing machine from a big box store and do this work myself. I’m concerned about sagging. or bulging which could cause trouble for the sheet rocker? How can I avoid this potential problem?
Thank you, Kevin
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Replies
kevinkeegan,
If you are insulating the joists cavities for sound attenuation, I would suggest using acoustical resilient channels under the drywall - which would also make slight bulging of the cellulose less of an issue.
https://www.youtube.com/watch?v=8eNs3Xs7eMU
Hi Malcom,
Thank you for you fast response. I would very much like to use the resilient channels however I can not build down the ceiling any further, and cost is also a consideration. I plan to use 5/8" sheet rock. The joist bays are approximately 8 inches deep, and about 14 feet long. As I mentioned earlier I would use the big box store blowing machine and green fiber cellulose. Do you think without the resilient channels I will create a hardship for the sheet rocker? I thought of blowing it in after the sheet rock is installed but since I do not have experience with the material and I have concerns that I may not be able to tell if the joist cavities are properly filled, I thought using the insulweb would allow me to see that I have filled the entire joist bay.
What do you think?
Thank you, Kevin
Kevin,
My suspicion is you will be fine, but having never done it I'm going to defer to other posters who have direct experience with cellulose in joist bays.