| A previous owner had applied a sealant to these walls, trapping water inside that had rusted the rebar and caused the blocks to crack and spall. |
| When the bag is deployed, the sealant forces the air to escape the bag through pinholes in the fabric itself instead of the seams. |
| Caulking, sealant, and weather stripping will do the trick and are available at most hardware stores. |
| This type of failure occurs when the adhesion of the sealant to the substrate it was applied to fails. |
| The preprocessed food packages were sectioned trays covered in a foil sealant. |
| All it requires is an initial sealing with a non-toxic stone sealant which can be reapplied after a couple of years if required. |
