A method for continuously extruding and depositing an unbroken layer of a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber, and the rotating port valve provides a rest state in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.

A method for continuously extruding and depositing an unbroken layer of a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber, and the rotating port valve provides a rest state in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.

A method for continuously extruding and depositing an unbroken layer of a slurry or mortar onto a selected work surface uses a mortar gun assembly with a chamber for receiving mortar from a remote supply hopper and an extruder configured to selectively apply a bead or ribbon of mortar of selected thickness onto the work surface. The user selectively applies mortar by controlling a rotating port valve between the hopper and the mortar gun chamber, and the rotating port valve provides a rest state in which the mortar is not sent to the mortar gun, but is instead re-circulated by the pump back to the hopper so un-dispensed mortar is kept moving and cannot dry or set.

The mortar-dispensing device includes a hopper, a trowel, an extruder, a battery, and an operator control. The mortar-dispensing device may be a tool for applying mortar to a substrate in preparation for laying tile. The hopper may be configured to hold the mortar prior to application of the mortar to the substrate. The trowel may rake the mortar to create a bed of mortar comprising mortar ridges. The extruder may force the mortar out of the hopper through the bottom of the hopper. The extruder may be energized by the battery under control of the operator control.