Given the current cold weather, our draughty kitchen skirting boards are really noticeable and costing a fortune in heating bills!
We have laminate wooden floors and natural wood skirting boards, so I have bought some coloured decorator's caulk to seal up the gaps at the bottom of the skirting boards.
However, someone has recommended expanding tape foam (not the stuff in a can) to seal the gap. As well as blocking up the gap, they assured me the tape foam would do a much better job of heat insulating against the cold air than caulk would do.
Is this true? Why would (what is essentially) expandable sponge on a tape be a better heat insulator than caulk?