anchors 40 are positioned on surface 24 so that the longitudinal axis of wall anchor 40 extends from a driven end 52 to a driver end 54 the driven end 52 is constructed with a self drilling screw portion 56 contiguous with screw portion 56 is a dual diameter barrel with a smaller diameter barrel or shaft portion 58 toward the driven end 52 and a larger diameter barrel or shaft portion 60 toward the driver end 54 at the juncture of barrel portions 58 and 60 a flange 62 is formed and a stabilizing neoprene fitting or internal seal 64 is emplaced thereat when fully driven into column 17 the screw 56 and barrel portion 58 wall anchor 40 pierces sheetrock or wallboard 16 and air or air vapor barrier 25 the channel seal 64 covers the insertion point or installation channel precluding air and moisture penetration therethrough and maintaining the integrity barrier 25 at the driving end 54 a driver portion 66 adjoins larger diameter barrel or shaft portion 60 forming a flange 68 therebetween and another stabilizing neoprene fitting or external seal 70 is emplaced threat upon installation into rigid insulation the larger barrel portion 60 is forced into a press fit relationship with anchor receiving channel 48 stabilization of this stud type wall anchor 40 is attained by barrel portion 60 and neoprene.