How to fix poor blown-in cellulose installation?
I’ve read couple of articles and watched video from National Fiber on your site, so I am now convinced that our blown-in cellulose installation is not of adequate quality. We have been pushing on the installers and they have come back 3 times by now, but I don’t think the job is finished. It is likely however that they will not come back. There is simply a different understanding between us of what would be the adequate job and what is not. After first install, it was enough to press on the netting couple of times in the center of the stud bay and the material would start coming tumbling down. We have subsequently rolled the stud bays using paint roller and broke 2 extension poles in the process (they took away metal roller seeing that it causes more trouble for them), insulation settled with voids of 2-8” on top of the bay, and they refilled these. They came back twice for this. But that is not the end of the story. Several more small gaps started to show after few weeks. We also felt around the electrical boxes and felt loose/soft insulation areas into which it was necessary to add insulation. We proceeded to stuff blow-in fiberglass chunks in those areas by hand.
When one cuts a hole at any place in the bay netting, e.g., on top, and one pushes down on the insulation, one can rather easily cause settling of 1 foot or more. We have proceeded to do this, and again, fill the resulting void with chunks of blow-in fiberglass. Fiberglass is very compressed, certainly not like it would have been if it was blown into those areas.
Is this method of fixing the poor job improving the situation? Is it OK to have the fiberglass compressed? How hard should we try to push on the cellulose to settle? I could see that if we did it from the top and in the middle of the stud bay we might reach the desired “firm mattress” that might not move after touching/pushing on it afterwards.
We have, of course, tried to require proper installation, but (1) we did not know exactly from the beginning what to demand (2) the relationship has become very strained, given that they had to come back multiple times already. The GC is of no help here.
We also tried to reason with them based on the expected bag count for the job. They said they installed 52 bags, 61 would have been the expected count, based on But did they really install 52 bags?
Our wall is 2×8 24 o.c. or 2×6 24 o.c.
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