IKO AquaBarrier TWF Through Wall Flashing is a self-adhering, cold-applied, SBS modified composite air and vapour membrane providing superior flashing protection for wall flashing systems. AquaBarrier TWF is used in adhered flashing applications directly over masonry, concrete, gypsum, wood or metal substrates which have been properly prepared with IKO S.A.M. or S.A.M. LVC Adhesive. This product is ideal for more demanding applications where higher tensile strength and puncture resistance are required.