Open-cell neoprene foam, 25mm wide and 25mm thick, in two 2m rolls.
When the gap is big and irregular, thin tape cannot reach. This fowong foam is 25mm deep, soft and compressible, so it fills awkward spaces around doors, loft hatches, air-conditioning units and boxed-in pipes.
Two 2m rolls (4m in total) of 25 x 25mm black open-cell neoprene foam seal tape. Soft and compressible, it fills large uneven gaps where thin tape cannot.
About this draught excluder tape & foam strips
Some gaps are not neat. A loft hatch that does not sit square, a shed door that warped, a gap around an air-conditioning unit or a boxed-in pipe: none of them suit a slim D-profile. This foam is the chunky alternative, 25mm wide and 25mm thick, and it compresses easily so it can fill large gaps and uneven surfaces.
It is an open-cell, low-density neoprene foam, which means it is soft and squashes to a fraction of its thickness. That softness lets it follow irregular surfaces, though open-cell foam is less water-resistant than closed-cell foam, so use it indoors or somewhere sheltered.
The pack contains two 2m rolls, 4m in total, with a strong adhesive backing. That is enough for a hatch or a couple of awkward doors. Cut it with a sharp knife, press it onto a clean dry surface, and let the door or hatch compress it gently as it closes.
The details
| Brand | fowong |
|---|---|
| Total length | 4m (2 x 2m) |
| Width | 25mm |
| Thickness | 25mm |
| Material | Neoprene, foam, rubber (open cell, low density) |
| Colour | Black foam with white backing film |
| Fitting | Self-adhesive |
fowong 4m 25mm Open-Cell Foam Gap-Seal Tape
Free United Kingdom delivery · easy returns · secure checkout
Got questions?
25mm wide and 25mm thick.
Two rolls of 2m, 4m in total.
Open-cell foam absorbs water, so it is best used indoors or somewhere sheltered.
Large uneven gaps such as loft hatches, air-conditioning units and odd door gaps.
Slide a thin piece of card into the gap with the door or window closed and note how wide the gap is. The tape should be a little thicker than that so it is gently squeezed when closed.
Delivery within the UK is free on orders of £30 or more and a flat £3.99 below that. The delivery estimate for your address is shown at checkout before you pay.
The complete guide
A hatch is often a loose panel sitting on a frame. The gap around it lets warm air escape into the roof space.
Run a thick foam strip around the frame where the hatch sits. The hatch squashes it as it closes.
A seal helps, but an uninsulated hatch is still a cold spot. Adding insulation to the top of the hatch makes a big difference.
Other options in this range, in case another size, colour or style suits your door better. See the whole draught excluder tape & foam strips range.
fowong 4m 25mm Open-Cell Foam Gap-Seal Tape (fowong) is sold at £24.99 with free UK delivery over £30. Two 2m rolls (4m in total) of 25 x 25mm black open-cell neoprene foam seal tape. Soft and compressible, it fills large uneven gaps where thin tape cannot. Total length: 4m (2 x 2m). Width: 25mm. Thickness: 25mm. Material: Neoprene, foam, rubber (open cell, low density). Colour: Black foam with white backing film.
