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Door membrane

2003 - 2009, roadster, coupe, facelift
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Timmyboybunter
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Location: Bristol/Bath

Door membrane

Post by Timmyboybunter » Wed Jun 16, 2021 6:01 pm

blunderthumbs wrote: Wed Jun 16, 2021 4:58 pm Where do I purchase the Butyl tape from, I'm guessing it's double sided. What width do I need?
It's more like a putty actually - in hot weather like we're having now you want to keep it as chilled as possible so it doesn't become a sticky nightmare while you're working with it.

Lots of options, different colours etc - this is the one I bought: (would probably go 10mm bead if doing again rather than 8mm)

https://www.amazon.co.uk/gp/product/B07 ... UTF8&psc=1
2012 VW Passat 1.4 Tsi Estate
2005 Mercedes CLK 55 AMG
2015 E89 BMW Z4 sDrive35iS (sold)
2010 E89 BMW Z4 sDrive30i (sold)
2003 E85 BMW Z4 3.0 (sold)

blunderthumbs
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Joined: Wed May 13, 2020 2:27 pm
Location: Cheshire

Door membrane

Post by blunderthumbs » Wed Jun 16, 2021 7:16 pm

Weston Matt wrote: Wed Jun 16, 2021 5:33 pm You need the left one. I think I paid £29 for mine from Rybrook Warwick
Thank you. Just been looking on LLLParts and they are about £36. Will try my local BMW dealer and ask for the Forum discount :thumbsup:
2004 Black Sapphire 3.0L SE. Red leather. Back box delete. Clutch valve delete. Roof motor relocated. 18" M star spoke style 193. Machine Monkey exhaust tips. Gap Tec. ZHP Gear knob. Clear side repeaters. Zun Sport lower grille.

blunderthumbs
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Joined: Wed May 13, 2020 2:27 pm
Location: Cheshire

Door membrane

Post by blunderthumbs » Wed Jun 16, 2021 7:18 pm

Timmyboybunter wrote: Wed Jun 16, 2021 6:01 pm
blunderthumbs wrote: Wed Jun 16, 2021 4:58 pm Where do I purchase the Butyl tape from, I'm guessing it's double sided. What width do I need?
It's more like a putty actually - in hot weather like we're having now you want to keep it as chilled as possible so it doesn't become a sticky nightmare while you're working with it.

Lots of options, different colours etc - this is the one I bought: (would probably go 10mm bead if doing again rather than 8mm)

https://www.amazon.co.uk/gp/product/B07 ... UTF8&psc=1
Thank you. Just tried your link to the Butyl tape on Amazon but It's currently unavailable :roll:
2004 Black Sapphire 3.0L SE. Red leather. Back box delete. Clutch valve delete. Roof motor relocated. 18" M star spoke style 193. Machine Monkey exhaust tips. Gap Tec. ZHP Gear knob. Clear side repeaters. Zun Sport lower grille.

Jamturbo
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Joined: Sun Apr 01, 2018 11:58 pm

Door membrane

Post by Jamturbo » Thu Jun 17, 2021 6:57 pm

Just a little tip. Do ensure the surface of the door where the butyl touches is free of grease or oily substance otherwise the effort of putting a new membrane might be wasted and could leak water again. It happened to me and I was livid when I realised. I ended up degreasing using fairy washing up liquid and washing off. When dry, the seal was very good.

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