Solvent-free gel against rising damp through the wall base. The gel spreads into the wall and forms a water-repellent barrier against rising damp. The gel is easy to apply with a gun in a horizontal mortar joint of the wall. Contents Drystone Gel Combibox: 3x Drystone Gel, 1x metal tube gun, 3x Drystone Gel injection tube. Good for treating 14m of wall.