Void Fill Foam for Abandoned Pipes, Mine Shafts & Other Large Voids
One of the most resilient void fill foams, AP Fill 420 is a two-component, high expansion, hydro insensitive polyurethane foam. It’s the top slab solution for polyurethane void fill. AP Fill 420 weighs 1.8 to 2.2 pounds per cubic foot. For similar products, see the page on Concrete Leveling.
Available Sizes
Applications
- Filling abandoned pipes, mine shafts, etc.
- Filling voids.
- Flotation foam.
Advantages
- Unconfined expansion rate: 35 times.
- 90% of full strength in 15 minutes.
- High expansion.
- Works in wet environments – displaces water.
- Bonds with soil and concrete.
- Closed cell.
Accessories
- AP Pump Flush
- AP Surface Guard 125
- AP Soak 130
Equipment
Two component proportioner with material heaters.
MixMaster Pro slab lifting gun.
