Author Topic: Water on rear sill  (Read 4213 times)

Offline greencode

  • Here all the time
  • ****
  • Posts: 452
  • Golf R - Pure White
Water on rear sill
« on: 13 September 2023, 15:17 »
I've had the previous water on rear sill going between the rubber and ultimately ruining my carpet and underlay (of which I'm replacing this coming weekend!). I sealed the speakers but the carpet and underlay is past repair.

However, is it still normal to get water on the rear sills. There's no water going between the rubber seal and I actually think having the plastic sill protectors makes the situation a little worse as the depth of those means they're very close to the underside of the door so if water comes around the door frame aperture if must then get a little trapped.

What I don't want to do is replace the carpet and underlay only to find out the water is still getting in.





Offline greencode

  • Here all the time
  • ****
  • Posts: 452
  • Golf R - Pure White
Re: Water on rear sill
« Reply #1 on: 15 September 2023, 16:40 »
Okay, I'm about to replace the interior this weekend but after pulling up a bit of the back carpet again, it feels wet (but this could just be condensation or water build up from the sodden underlay) in the rubber grommet near the bottom of the footwell (where the back of your ankles would be if you sat on the seat.

Could that be a source of leaking area? If so, where does that come from?

I've removed the rear bench seat and the boot shelf including spare wheel and carpet insert and all of that is dry.

Here's the grommet/wiring loom I mentioned above…




Offline ajmoir36

  • I live here
  • *****
  • Posts: 1,878
Re: Water on rear sill
« Reply #2 on: 15 September 2023, 19:47 »
Either the rear door speaker seals you can test it by pouring water down the window with a watering can. Or the rear vents behind the bumper which fills the rear quarters and pours over under the rear seat/spare wheel well. Both quite common.
Diagonally parked in a parallel universe.
On Order: Mk8 R, Pure White, Reversing Camera, Harmon Kardon, Heated seats all round.
Gone: Mk7.5 R, 5dr, DSG, Deep Pearl Black, 18” Cadiz, Nav, Winter Pack, Keyless, Dynaudio and Reversing camera.
Gone: Mk7 R, 5dr, DSG, Limestone Grey, 19" Pretoria's, Nav Pro, DCC, Winter Pack, Keyless, Mobile Prep and Reversing Camera.
Gone: Mk6 GTD, 5dr, Manual, Tornado Red, 18" Vancouvers, RCD510 + Dynaudio, heated seats.

Offline greencode

  • Here all the time
  • ****
  • Posts: 452
  • Golf R - Pure White
Re: Water on rear sill
« Reply #3 on: 15 September 2023, 19:51 »
Thanks for this. Would I easily tell if it’s the bumper? The bench seats aren’t wet and don’t smell as though they have been in the past. Likewise under the spare wheel there’s no signs.

Offline ajmoir36

  • I live here
  • *****
  • Posts: 1,878
Re: Water on rear sill
« Reply #4 on: 15 September 2023, 20:22 »
Most likely the speaker seals then, when you pour the water on the glass on the trim outside you will get water appearing between the inner door panel (grey) and the painted door on the inside.
Diagonally parked in a parallel universe.
On Order: Mk8 R, Pure White, Reversing Camera, Harmon Kardon, Heated seats all round.
Gone: Mk7.5 R, 5dr, DSG, Deep Pearl Black, 18” Cadiz, Nav, Winter Pack, Keyless, Dynaudio and Reversing camera.
Gone: Mk7 R, 5dr, DSG, Limestone Grey, 19" Pretoria's, Nav Pro, DCC, Winter Pack, Keyless, Mobile Prep and Reversing Camera.
Gone: Mk6 GTD, 5dr, Manual, Tornado Red, 18" Vancouvers, RCD510 + Dynaudio, heated seats.

Offline greencode

  • Here all the time
  • ****
  • Posts: 452
  • Golf R - Pure White
Re: Water on rear sill
« Reply #5 on: 15 September 2023, 20:23 »
Most likely the speaker seals then, when you pour the water on the glass on the trim outside you will get water appearing between the inner door panel (grey) and the painted door on the inside.

Thanks. I’ll give that a go in the morning before the big rip out the interior and install!!!

Offline ajmoir36

  • I live here
  • *****
  • Posts: 1,878
Re: Water on rear sill
« Reply #6 on: 15 September 2023, 20:25 »
https://youtu.be/pDLqcbRtlGc?si=GriLRzGcdXBbmoGu Video showing the way to fix it.
Diagonally parked in a parallel universe.
On Order: Mk8 R, Pure White, Reversing Camera, Harmon Kardon, Heated seats all round.
Gone: Mk7.5 R, 5dr, DSG, Deep Pearl Black, 18” Cadiz, Nav, Winter Pack, Keyless, Dynaudio and Reversing camera.
Gone: Mk7 R, 5dr, DSG, Limestone Grey, 19" Pretoria's, Nav Pro, DCC, Winter Pack, Keyless, Mobile Prep and Reversing Camera.
Gone: Mk6 GTD, 5dr, Manual, Tornado Red, 18" Vancouvers, RCD510 + Dynaudio, heated seats.

Offline greencode

  • Here all the time
  • ****
  • Posts: 452
  • Golf R - Pure White
Re: Water on rear sill
« Reply #7 on: 15 September 2023, 20:28 »
https://youtu.be/pDLqcbRtlGc?si=GriLRzGcdXBbmoGu Video showing the way to fix it.

Thanks, yeah, I’ve already done that as there was definitely water coming through that broken seal. I think the underlay had just been soaked for so long, and still is because there’s no way of the water escaping once trapped in the underlay. The car absolutely stinks.

Offline GTIreland

  • Not said much yet
  • **
  • Posts: 38
Re: Water on rear sill
« Reply #8 on: 18 September 2023, 04:19 »
The question still remains, is it normal to have water on the door sill i.e. on the metal but not the plastic part?

I've done the speakers and still get water pooling on the exterior part of the sill.
2016 Mk7 GTI PP CSG Manual

Online Adam T7

  • I live here
  • *****
  • Posts: 1,172
Re: Water on rear sill
« Reply #9 on: 18 September 2023, 07:40 »
Sometimes see that on mine.
I check my carpets regularly and (touching wood and praying) still always dry.
MY2019 GTI Mk 7.5 Performance. DSG, 5 Door, Rear Camera, Climate Windscreen and Rear Window Factory Tints, Indium Grey.