Gapseal FAQs

  • Q - What colour is Gapseal and can it be seen when fitted?
  • A - It is available in two colours for best match to your floorboards.

    - Camo-Fill for pine floors and darker floors
    - Semi-Transparent for very light floors

    It sits up to 10mm below the level of the floor, typically resting on the floor joists it cannot be seen.  Please see the illustration on the Product page for an example of this. 
  • Q - When should Gapseal be fitted to the floorboards?
  • A - Our recommendation is that Gapseal should be fitted to the floorboards after sanding and finishing. Gapseal does not harm the boards, or the finish on the floor.
  • Q - How long is a roll of Gapseal and how much floor will it cover?
  • A - A roll of Gapseal is 40m in length.  For an accurate quote as to how many rolls you will require, please use the calculator on the homepage
  • Q - Is Gapseal safe to use with a gas fire in the room?
  • A - Adequate ventilation is required in any room, especially those containing a gas applicance. We would recommend seeking the advice of a qualified plumber and fitting a carbon monoxide detector.
  • Q - What happens to the cold air that Gapseal traps under the floorboards?
  • A - Warm air is displaced by cold air when a temperature difference is evident, until eventually the whole room, including the area below the floorboards is at an equal temperature. Gapseal simply makes a barrier, not allowing this displacement to take place. The colder air below the floorboards simply stays where it is.
  • Q - What is Gapseal made from and is it waterproof?
  • A - Gapseal is made from polypropylene (plastic) and is waterproof.
  • Q - Can't anything be used to fill in the gaps between floorboards?
  • A - In theory, anything that makes a seal can be used, but Gapseal has been specially designed to hold its seal and excludes draughts between uneven surfaces. Other solutions will exclude some draughts, but they will not be as effective, or last as long as Gapseal.
  • Q - Can I vacuum the floor without sucking out Gapseal?
  • A - Yes. Gapseal is typically inserted 10mm below the top level of the floor, and any cleaning process should not affect it.
  • Q - Can I use Gapseal for anything else, anywhere else?
  • A - Gapseal can be used to exclude draughts between two surfaces 1mm to 8mm apart, such as gaps in sash windows, between floorboards and skirting boards, and just about anywhere else.
  • Q - Is there a helpline for Gapseal, and when can I call?
  • A - There is a dedicated helpline and orderline for the product, and it is manned during office hours, 5 days per week excluding bank holidays. The number is 0800 088 7311.