The Original Damp Proofing Cream Dryzone is an alternative to traditional messy damp treatment methods that use liquid injection. It's effective on a wide range of substrates and proven to work even in highly saturated walls (95% saturation). The specially formulated blend is developed for maximum spread throughout the mortar to form a new damp course. Based on a standard 9-inch wall each 310ml tube of the Dryzone will cover up to 1.7 linear meters. This DPC injection kit comes complete with Cox Mastic Gun and a 12 x 300mm SDS Dryzone Drill Bit.