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barbel jim

Member Since: 12 Dec 2012
Location: Northants
Posts: 1428

Leaking sides to rear tub sealing advice

My new Td5 hardtop had a multitude of water leaks which bar 1 I have solved. I keep getting puddles appear in the rear. It is leaking through the foam seal. Everything is bolted down tight but there is a noticeable bend inside, as in its tighter either end. The obvious thing to do would be replacing the seal. However I'm a little worried that will not cure the problem due to the deflection. Is it worth using a mastic to seal externally , and if so any recommendations ??

Ta in advance

18th Dec 2017 11:23am

grafty99

Member Since: 15 Aug 2012
Location: North Devon
Posts: 4788

I would be inclined to put more bolts in

2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
Instagram http://www.instagram.com/george_grafton

18th Dec 2017 4:06pm

grafty99

Member Since: 15 Aug 2012
Location: North Devon
Posts: 4788

Having said that I put new seals in mine when I rebuilt after the respray. They're really thick (40mm or so) 2002 90 Td5 Station Wagon
1990 Vogue SE
Triumph Tiger Explorer 1200
Td5 90 Thread http://www.defender2.net/forum/topic50767.html
Tdi 110 Thread https://www.defender2.net/forum/topic69562.html
RRC Thread http://www.defender2.net/forum/topic54492.html
Instagram http://www.instagram.com/george_grafton

18th Dec 2017 4:07pm

barbel jim

Member Since: 12 Dec 2012
Location: Northants
Posts: 1428

It has the correct bolts and brackets George. Additional ones would have to be drilled, not the easiest and permanent holes

I'm sure I've read somewhere on here , someone used sikaflex? I know k9(mal) was an advocate of it. The only problem is splitting at a later date! It's just one corner and under the rear quarter light.

18th Dec 2017 5:59pm

Paulv8

Member Since: 09 Jun 2013
Location: Milton Keynes
Posts: 618

1989 Defender 90 V8 Petrol CSW Alpine White

I would unbolt it, replace the seal, and then check for rust/other issues. the standard seal is good except for the one spot by the seam of the cappings. you can add a bit of sealant, but something is cleary wrong fundementally if it's leaking.

It's an hour's work and parts are cheap. V8 90...WIP

18th Dec 2017 6:09pm

GREENI

Member Since: 22 Aug 2010
Location: staffs
Posts: 10383

Masking tape, upper and lower part of gap, apply silicone liberally in one big line with BARREL gun (skeleton guns are a waste of money and effort) lick finger and smooth it in in one big line. Peel masking tape off.

18th Dec 2017 6:10pm

Sulisuli

Member Since: 30 Oct 2016
Location: South west
Posts: 4795

2015 Defender 90 Puma 2.2 HT Corris Grey

Sikaflex mastic is a great product we use it a lot at work, it’s easy to finish (like bathroom sealant) but does stick like

to a blanket

very waterproof, very flexible, very good product

2015 HT XS 90
2008 SVX 90
2000 XS TD5 90

18th Dec 2017 6:10pm

GREENI

Member Since: 22 Aug 2010
Location: staffs
Posts: 10383

Here was my result.

Click image to enlarge

18th Dec 2017 6:12pm

Paul55

Member Since: 03 Feb 2009
Location: Somewhere in my head!
Posts: 511

2008 Defender 90 Puma 2.4 XS CSW Santorini Black

Jim, I had a leak under the rear quarter light (near side) and I thought it was the tub seal, put some dum dum around the inside of the light, no more leaks, worth a try

Cogito ergo sum

18th Dec 2017 6:14pm

foxyred

Member Since: 16 Jul 2016
Location: Nottingham
Posts: 227

1994 Defender 90 200 Tdi HT Montalcino Red

Greeni has made a very neat job, But I would put new a seal in as mastic is quite severe

18th Dec 2017 6:22pm

barbel jim

Member Since: 12 Dec 2012
Location: Northants
Posts: 1428

GREENI wrote:
Here was my result.

Click image to enlarge

Knew I'd seen it somewhere

Thanks Greeni.

Trade tip - Better than licking your finger, use a spray mister, with some water and a few drops of washing up liquid

18th Dec 2017 6:28pm

GREENI

Member Since: 22 Aug 2010
Location: staffs
Posts: 10383

My fingers usually are sticky from sticky buns. I appreciate the tip though

18th Dec 2017 6:41pm

ginjez

Member Since: 18 Sep 2011
Location: huddersfield
Posts: 1763

2011 Defender 90 Puma 2.4 ST Santorini Black

I do the same as greeni but use a polymer sealant instead of silicone. I also do the front bulkhead.

18th Dec 2017 7:30pm

zsd-puma

Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

2010 Defender 110 Puma 2.4 USW Santorini Black

Plenty of different brands of proper car body sealer available for the job.

Silicone is a nightmare if you ever have to have any paintwork done.

18th Dec 2017 10:55pm

barbel jim

Member Since: 12 Dec 2012
Location: Northants
Posts: 1428

Quick update,

Rear tub sorted, new seal sorted that. Now found another leak

Drivers side roof to windscreen , leaking in the corner where the dum dum has deteriorated and disappeared, dug it out and cleaned up and resealed with sika ......... fingers crossed

6th Jan 2018 12:52pm

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