How To Stop Roof Leaks On A E30 Convertible?.

[Uzi_Khan]

My roof leaks & my hardtop also leaks... how do i stop the leaks?

[Rtaylor2208]

Where from on the roof? The usual suspect is the long seal that runs along the front section of the roof where it joins the windscreen surround. This usually crumbles over the years.

A replacement can be bought from BMW for approx £150. I am not sure if the hard tops use the same seal.

If its around the windows then they need re-alligned.

If its through the canvas water proofing with renovo may help prevent this.

[Z3I]

First thing to remember is that you have a 20+ year old convertible, with 20+year old rubber seals etc, and its never going to be 100% water tight.

But to help, buy some 3 in 1 silicon spray, and treat the rubber seats with it. It helps to repel the water and stop it finding little gaps in the rubber to seep through. Next, check that your windows are not crushing the rubber seats around the windows. Best you can do, like on modern cars, is close your doors with the window slightly down, then raise it when the door is closed, so the glass sits under the rubber lip.

[Laith]

I used black bathroom silicone, wrapped the window edge with cling film and covered the roof edge in silicone and closed for a day.