The substrate areas that will be in contact with the sealant must be clean, dry and free of all loose material, dust, dirt, rust and other contaminants. Non-porous surfaces should be cleaned with solvent and a clean, non-fluffy cotton cloth. Solvent rests should be removed before evaporating with a clean cloth. Absorbing and sandy surfaces must be treated with primer. Cut off the threaded end of the cartridge and screw on the application nozzle for directing sealant. Cut the threaded end in a way where a suitable opening for application is produced. Place the cartridge together with the applicator in the gun and fill the installation nozzle with sealant, by repeatedly pressing the gun trigger. Apply sealant in the joint by repeatedly and evenly pressing on gun trigger and smoothly dragging the nozzle along the joint. After application, smooth the surface with a rubber silicone scraper and remove excess material. It is convenient to apply the sealant to the surface also with a filling knife, especially in case of bigger surfaces. If outside temperatures are low for application, the putty should be stored in heated areas to avoid a high viscosity. The skin-over-time of bituminous putty is relatively short and therefore quickly fulfils its task to seal the joints. The curing time strongly depends on the thickness of the layer of the putty and the surrounding temperature. It generally takes two to three days.