Wow! I was pleasantly pleased with stop gap as lots of products say they are easy to fit and turn out to be problematic or very fiddly, stop gap was neither of these. It was simple to use with or without the credit card and it seems to do exactly what it says on the pack. Until I started to use the product I didn’t realise how big some of the gaps were between my floorboards and just how draughty they were. The room did seem noticeably warmer once I had finished, however I didn’t check the temperature. A wonderful product thank you.
B M Beckenham