— plywood
— polyethylene
— tools (jigsaw, screwdriver, spatula, grinder or sandpaper)
— screws, screws, dowels.
— glue, putty, solvent.
First you should find out if there is a problem of gender moisture. This happens in the presence of underground communications or violations of construction equipment. If you do not have special devices for determining humidity, then simply put on the floor a sheet of polyethylene 1m x 1m, strengthening it on the sides of its loads. Leave the center free. If after three days there is no moisture in the center, then we can start the next part of the work.