What is your opinion of the North American Insulation Manufacturers Association (or NAIMA)? Favorable 16% Neutral 58% No opinion/Never heard of them 25% Get Free Quotes Today! Question: What is your opinion of the North American Insulation Manufacturers Association (or NAIMA)? Top Answer (58% of 12 votes): Neutral. Get Free Quotes Today! Find Local Pros Free Blown Attic Insulation Installation Cost Estimates Related Questions Blown-in cellulose insulation is typically more expensive than blown-in fiberglass insulation. Top answer: False Can mold grow in blown-in cellulose insulation?Top answer: Yes Can mold grow in spray foam insulation?Top answer: No How Much Does It Cost for Spray Foam Insulation? How much does it cost to install insulation in Phoenix, AZ?