{ } that a neutral colour filler has been used for clarity in these photographs, but the product we send you is actually Brown & is better for a floor of this colour. In practice, the colour of the seal is not critical because the seal is virtually invisible in th shadow at the bottom of the gap. Stop Gap is designed to stop draughts in gaps of 1- 8mm wide, especially gaps between square-edged wooden floorboards. The gap must be 10mm or more deep so that the seal can be pushed out of sight. This makes it unsuitable for tongue & groove boards. If you're desperate the seal can be trimmed with scissors to fit shallower gaps, but this restricts the width of gap which can be dealt with & is not really practical for large areas, but, if you are desperate... It's also great for sealing the gap between the skirting board & floor including in carpeted rooms (ever tried sealing this gap with flexible sealant? It can be messy, which can be avoided with Stop Gap!) A 12' by 12' room has around 25 floorboards, meaning there's an average total gap area of 3.87'
- equivalent to permanently leaving a small window open. No-one would choose to leave their window open all winter