Topics: Glue for foam insulation in toilet tank; Mould in a cold room; Changing thermal pane windows; A furnace thermostat not talking to the furnace; Patching a hair-line crack in front portch; Drains gurgling -- the Vent Valve; Sealing a crack in a basement floor that has been cut open wide for sealant -- video on caulking techniques; Replacing the seal in an upright freezer; Caulking aluminum windows.