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Energy Saving

The natural gaps around sash windows create cold draughts and allow significant heat to be lost which can often lead to chilly and uncomfortable rooms and increased heating bills during the winter months.

Traditional window seals usually have to be glued to the side of windows or frames and get stripped off when the sash window is opened or closed. They are generally not effective for windows that no longer open or on uneven surfaces. Gapseal is a proven sash window gap filler, designed to reduce the cold draughts and improve the comfort and energy efficiency of your home.

The total gap length around a sash window can reach up to 4m in length and has an average gap width of about 2mm. This is the equivalent of having a hole the size of a down pipe in your wall and can result in significant heat loss.

Stopping cold air from being drawn into a room and preventing heat loss will make your rooms feel more comfortable and can reduce your energy bills and CO2 contribution.

Environmental Benefits:

  • Its application can result in substantial energy saving in homes
  • It is a long life product (Durable material)
  • It is reusable (Multiple life product)
  • Its application can extend the life of flooring in homes
  • The product reduces moisture absorption in floors, especially soft woods
  • It is safe to use and apply (No adhesives, no print, no odours)
  • It has more than one possible application
  • It is user friendly
  • Is it designed for the full life cycle

Important Company Details

Safelincs Ltd Registration Number (England and Wales)

4715788

VAT Number

GB 827 6397 88

Dun & Bradstreet D-U-N-S Number:

73-451-4198

Do You Have Draughty Floorboards Gaps?

Cold draughts created by the gaps between floorboards can also lead to chilly and uncomfortable rooms and increased heating bills during the winter months. Even rooms that have carpet and underlay fitted often have gaps between the skirting board and the floorboards that allow significant heat to be lost.

Traditional floorboard gap filling techniques and products are time consuming, messy to install and will often fall out over time. DraughtEx is a proven floorboard gap filler, designed to reduce the cold draughts and improve the comfort and energy efficiency of your home.

Our Customers Love Gapseal

4.5 / 5 Stars

Read reviews from 100 customers who've installed Gapseal to eliminate draughty windows and make their homes warmer.

Buy Gapseal Now

Gapseal 10m Pack

Suitable for 2 - 7mm gaps

13.99 inc VAT

11.66 ex VAT

Additional Application Tool

Do I need another applicator?

2.29 inc VAT

1.91 ex VAT

Sub Total:

£0.00 inc VAT

£0.00 ex VAT

FREE Standard Delivery

All UK orders are shipped FREE of charge and delivered in 2-3 working days by Royal Mail as standard.

Please Note: Deliveries to Islands and remote locations can take an additional 1-2 days to be delivered.

Next Day Delivery

Orders can be upgraded to next working day delivery for
£4.50 inc VAT and will be delivered by UK Mail.

For delivery on order within the next
and choose next working day delivery.

International Delivery

We offer an international shipping service for customers looking to buy Gapseal from outside of the UK.

If you are intersetd in an internatinal delivery please contact our international sales team for a shipping quote.