Patent ID: 7584581

Claim:
A device for introducing a free-flowing permeating substance to a structure in situ, the structure having thickness, said device comprising: a first layer, said first layer being permeable to said free-flowing permeating substance but at least nearly impermeable to structural construction materials, said first layer adapted for placement adjacent said structure, said first layer adapted to communicate with said structure to permit introduction of said free-flowing permeating substance to said structure; a second layer, said second layer being impermeable, said second layer having a first side and a second side; at least one piping adapted to pass through said structure, said piping adapted for communication with said first layer to permit injection of said free-flowing permeating substance into said first layer, said piping having an inlet adapted for placement exterior said structure and constructed to permit communication with a source of said free-flowing permeating substance; said free-flowing permeating substance comprises at least one selection from the group consisting of a liquid and a gas; an intermediate layer composed of a material permeable to said free-flowing permeating substance; and said intermediate layer intermediate said first layer and said second layer.