We have compiled a list of frequently asked questions that we receive from our customers. If you need any further help or advice, please do not hesitate to contact us and we'll be happy to help.
Gapseal is magnolia coloured and is invisible once fitted in white or cream coloured windows.
You can fit the seal at any time. As long as no excessive force is used, no damage occurs, and a plastic applicator is supplied to push the seal in without scratching the window
If orders are placed before 2pm, we usually dispatch the same day. We use Royal Mail (2-3 working days) for orders of 1-2 packs of Gapseal. Orders of 3 packs and more are dispatched on a next working day service (Monday to Friday) by courier.
Gapseal is supplied in 10m length. Just measure the length of the window gaps to work out the number of Gapseal packs needed. Please keep in mind that the product stretches when applied in thin gaps and can then cover a longer gap!
You can fill window gaps with the readily available window/door seals or you can use scrunched up newspaper which will work for a period of time. However, the newspaper will get mouldy and fall out after a while and the traditional seals can not be easily fitted in sash windows and do not work if the gap width varies. Gapseal will last and can cover a wide range of gaps (2-7mm).
Yes, however, Gapseal falls out when the window is opened but it is simply refitted when the window is closed again and can be re-used many times.
We have a dedicated free phone number dedicated to sales and support, 0800 612 7859 open Monday to Friday (08:00 - 17:30) and Saturdays (10:00 - 14:00).
If the windows do not need to be opened again in the future you can leave Gapseal in the gaps while painting the window. If the window is required to open then we recommend that you remove the seals and refit them again after painting.
Gapseal does not absorb moisture.
No, as Gapseal is not glued on it would fall off the door frame. In uncompressed state it would also be too thick for a normal door. When fitting to windows Gapseal is stretched to the tickness required and will then expand to the correct thickness which would not be possible in the case of doors
As long as the gap is less than 7mm, Gapseal can be used
Try to stay 2-3 mm below the surface to maintain the natural look of the window.
Yes, the finish of the window does not affect either the installation or performance of Gapseal.
Read reviews from 150 customers who've installed Gapseal to eliminate draughty windows and make their homes warmer.
An excellent collection of images showing sash window gaps that have been sealed using Gapseal sash window gap filler.See Full Image Gallery