Simply put, fiber glass insulation is a thoroughly tested insulation product and a proven performer. It provides acoustical control, moisture and mold resistance and fire protection. What's more, contractors can achieve a RESNET Grade 1 wall with a proper installation and an air sealing solution.

"We act as a consultant to builders so they can make the best decision when it comes to how they insulate the homes they build. Nearly 100% of homes we install have some level of fiber glass insulation. More than 95% have fiber glass batts in the walls. If you seal the cavity, fiber glass performs at the same performance level as any other insulation type, including spray foam."

- John Ratzow President of Wisconsin Insulation Services