10/08/2023
Having water leak into your car when it rains is annoying at best but can cause costly damage to interior trim and delicate electronics that are supposed to be kept dry.
If you’ve got a Škoda, Seat, VW, Audi, Porsche or even a Bentley fitted with a panoramic sunroof that looks like the one on this Audi A6 Avant then sadly it’s a case of when, not if, it develops a leak.
The pano roof is a fairly poor design, with plastic and aluminium components held together with small screws and the bare minimum of sealant. Over a period of time, the general flexing of the vehicles bodyshell results in the different parts that make up the sunroof moving relative to each other. This eventually causes the factory applied sealant to fail and water gets where it shouldn’t when it rains. You’ll usually find it in one or both of the front footwells.
If this is happening to you and you’ve done the easy check of making sure the sunroof drains are clear and free flowing, you’re probably googling and finding that there are various ‘quick fixes’ documented online. Sadly, these are mostly ineffective and the only way to permanently repair this issue is to remove the sunroof, strip it apart then reseal it properly with a decent amount of sealant in the right places.
Removing the sunroof means stripping the interior from the waist of the car upwards including all the pillar trims and headlining - not a two minute job.
Thankfully we’ve had a couple of good weather days so we timed it right with the booking in of this car. Interior stripped, sunroof removed, sunroof mechanism dismantled, cleaned, resealed, put back together and mechanically bonded for a couple of hours with the help a couple of g-clamps.
Sunroof back in the car and the interior put back in. Absolutely nothing visible to show for our efforts other than a bit of sealant on the joint between the plastic and aluminium on the sunroof and even then only visible when you look closely with the sunroof open.
BUT…next time it rains the owner can now be confident they won’t be coming out to puddles in their footwells. Job’s a good’un 👍🏻👍🏻