Foam Insulation – Insulation Of Cavities
Injection of cavities can be achieved successfully by using pour foam which has a slower rise time therefore the liquid injected runs to the bottom of the cavity before it starts to rise.
The oil spill booms are inflated with air before a small 4mm hole is drilled into each boom to allow the injection of polyurethane pour foam.
Pour foam is used in this situation as it has a slower rise time, which means the foam runs to the bottom of each boom before rising.
Once booms are filled with polyurethane pour foam rubber patches are applied to each injection site and the booms are then linked together and placed around ships.
This is a safety measure used when oil is being transported from ships to the mainland.
Note when injecting walls i.e. sea containers the walls will need to be braced to stop the walls from expanding.
This product is not suitable for plaster walls but a different foam (spray foam) could be applied before plaster is applied.