panels and filling the cavity with the adhesive material 30 can be repeated as needed until the uppermost panel is installed when installing the uppermost row of panels adjacent the ceiling 20 an upper angle bracket 40 can be secured to the ceiling to assist in supporting the upper edges of the panels 14 in the uppermost row see fig2 in order to inject the foamable material 30 into the cavity a series of small holes 42 large enough to receive the distal end portion 44 of the nozzle can be formed along the upper edge portion of the panel 14 the distal end portion 44 of the nozzle 36 can be inserted into the various holes 42 for forming layers 32 of adhesive material 30 filling up the cavity c between the wall 10 and the uppermost row of panels 14 advantageously the adhesive material 30 secures the panels of the sheathing layer to the wall 10 without any studs or mechanical fasteners such as nails or screws the layers of material 30 also function as a water and air barrier for the wall structure such that traditional wall waterproofing is not required the adhesive material 30 also insulates the wall structure and further reduces energy losses by eliminating the thermal transfer pathways of furring studs after the sheathing layer is installed the slip form assembly 12 can be converted into a movable platform 19 for use in finishing the outer surface of the sheathing layer e g painting the sheathing layer for example the frame 22 and the form 24 can be placed in a horizontal position to allow a worker to sit or stand on the form 24.