It's draughty at foot level in the kitchen so I took the kick boards off.   There were a couple of bits of wood piled up in the corner which I hooked out with a hammer.     On the outside there is an air brick at this point (single clay brick size) so I was expecting something. But perhaps an airbrick with a grille that I could tape over. This is an all-electric kitchen, no gas appliances.   The bottom of the hole has plastic sheet on it (damp p