Review on 🏢 M&D Building Products 71464 Backer Kit by Samiran Pusarla

I love this stuff. After stuffing it in different places and using it up, I bought 3 more packets of different sizes. This is very useful and much more predictable than an amateur's hands can spray foam. Better and cleaner than trying to close large cavities with multiple passes. Just slide it into the hole. Without glue. Just choose a size that fits snugly in the hole. Add multiple layers for a deep gap. I'm converting a sturdy shed into an office and my air conditioner is sealed in a hole in the wall. The windows glued with rivets. Cracks in the hard insulation closed. Quickly. Light. Inexpensive. Stable. Clean. Easy.