20mm Garage Door Seal Kits

The 20mm garage door threshold seal sits in the middle of our range. It suits doors with a gap of up to 20mm, which is common on older up-and-over doors and on uneven garage floors where a 15mm seal won’t close the gap.

Every kit contains a 20mm high PVC seal with a yellow safety strip and anti-slip ridges, black heavy-duty adhesive sealant, fitting instructions and rubber gloves. Choose from eight lengths between 2.21m (7’3″) and 6.17m (20’3″), or a 25m roll for trade and multiple doors.

Fitted behind the closed door, the seal keeps rainwater, leaves, dust and draughts out and helps stop rodents getting under the door.

15mm or 20mm? Measure the gap under the closed door at its widest point. Up to 15mm, the 15mm kit is enough. Between 15mm and 20mm, choose 20mm.

Will my car drive over it? Yes. The ridged profile is designed to be driven and walked over.

Can I order a sample? Yes, a free 20mm sample is available so you can check the profile before you buy. You only need to pay for the postage.