Insulation Removal Vacuums and Spray Foam

How does an insulation removal vacuum makes sense for a spray foam company? There are at least three ways:

• You can use the vacuum with a wand extension to pick up the shavings throughout the house.
• You can use the spray foam attachment which works much like a barbershop hair vacuum. Just sweep the foam shavings into the vacuum and it pulverizes the foam into small bits.
• You can extract blown in insulation materials in attics and then seal the attics with foam.