Patent ID: 7836650

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 of material, said material 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, said first layer having first layer sides; a second layer, said second layer being impermeable, said second layer having second layer sides, said second layer sides equivalent to said first layer sides; an intermediate layer intermediate said first layer and said second layer and joined to said first layer and said second layer, said intermediate layer permeable to said free-flowing permeating substance, said intermediate layer adapted to maintain said first layer and said second position in relative position when force is applied against said first layer and/or said second layer, said intermediate layer having intermediate layer sides, said second layer sides equivalent to said first layer sides; and 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 material of said first layer, said piping having an inlet adapted for placement exterior said structure and constructed to permit communication with a controllable source of said free-flowing permeating substance.