Cellulose Answer Man: Your Source For Information
Answer:
The second part is whether to do a “flash and fill” job…that is spray a thin layer of foam in each cavity and then fill the cavity with cellulose insulation. While this is not needed in most climates when using dense packed or sprayed cellulose in a wall, of the two sprayed would be the better option although ether can be used. If you are in an extreme close area with Heating Degree Days in the 9000+ range it may be advisable to consider “flash and fill.” Again, check with your contractor.
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2022-01-10 14:00:27
Artur says:
Use closed cell and than fill with open cell sprY foam.