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Subject Topic: Coachman Roof leak
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Message posted by Howard 50 on 27/3/2014 at 1:41pm
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Howard 50
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Hi All,
I'm a newbie to the forum, but after reading Wizards website I thought someone here might be able to help with some advice. I have had a look through other posts and websites, but can't find my problem in any others.
I have a coachman 460/2 made in 2005. We recently noticed some damp in the end bathroom area. After stripping out the cupboards and taking some of the interior roof out it became clear the leak was coming from the rear roof joint where the aluminium roof joins the UPVC plastic rear panel. The joint is covered by an aluminium strip, which can be seen to have slightly separated from the plastic rear panel. I tried to do a patch fix without taking the strip off and just "pushing" in some Sikaflex 512, but unsurprisingly it hasn't fixed the leak, just slowed it down a bit ! Before I try to remove the strip does anyone have any advice on the best way to remove the strip without damaging either the stip or the roof / end panel.The strip doesn't appear to have any screws in, so I assume it is just stuck on with sealant. Thanks for all / any replies. Howard.

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Message posted by jeff juke on 27/3/2014 at 2:06pm
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The Rail as you call a strip has a plastic coloured beading running through it.

Pull off this beading and screw nails will be revealed,this takes off the rail and if you do this be careful not to bend it.

Unscrew the rail past the leak and clean below it with white spirits to remove old mastic.

Once cleaned off,run a new bead of sealant down the join where the roof meets the wall then,a bead of sealant either side.

Replace the rail and tighten down the screws,leave for about 10mins then retighten,

This is a quick easy way without taking off the full awning rail to seal it.

BE CAREFUL NOT TO BEND THE RAIL..



-------------
Animals have feelings...

JEFF................

Message posted by Howard 50 on 27/3/2014 at 3:24pm
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Hi Jeff,

Thanks for the reply.
What you describe is exactly what I would have expected to find , but there is no plastic pull out strip. Its just a solid piece of curved aluminium about 1 inch wide.
Any ideas ?

Howard

Message posted by jeff juke on 27/3/2014 at 5:09pm
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Better wait till some body knows how to take it off Howard as i have never came across this as things are changing all the time.

-------------
Animals have feelings...

JEFF................

Message posted by Bill Terry on 27/3/2014 at 5:20pm
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Can you take a pic of the strip?

-------------
Roughing it in style at Calloose caravan and camping holiday park nr St Ives.
Its not a hangover, its wine flu!


nant mill.N/Wales
just dont go there.

Message posted by Howard 50 on 27/3/2014 at 6:07pm
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Hi Bill,

I've added an image of the stip to my gallery images in my profile. I think you should be able to see it.

All advice welcome.

Thanks

Howard

Message posted by jeff juke on 27/3/2014 at 8:03pm
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Howard,DONT pull that rubber off its part of the awning rail on the side of your van.

Your looking at a lip whats on it,take the rail off the side like ive said pass your leak and seal back up especially where that piece of rubber is off.

-------------
Animals have feelings...

JEFF................

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Message posted by jeff juke on 27/3/2014 at 8:07pm
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-------------
Animals have feelings...

JEFF................

Message posted by jeff juke on 27/3/2014 at 8:08pm
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Just apply the pictures to the back of the van

-------------
Animals have feelings...

JEFF................

Message posted by Howard 50 on 27/3/2014 at 8:42pm
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Hi Jeff,

Thanks for the info.

The awning strip isn't the source of the leak. It's the aluminum strip / joint on the top of the van that runs from side to side on the roof. I've resealed awning rails in the past, but never come accross the type of aluminium strip that is on the roof,there are no screws or covering rubber strip.I'm just not sure how to take this strip off, is it just suck on with mastic ?

Thanks

Message posted by jeff juke on 27/3/2014 at 9:35pm
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Have a look on you tube to see how your van is constructed at the factory.I know there is one for Bailey caravans it shows the start and finish of their vans.

-------------
Animals have feelings...

JEFF................

Message posted by AndyDW on 28/3/2014 at 7:58am
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Howard, to the rear of the strip (looking across the van), is that the Plastic part?

Is the plastic rear then in one piece or is there another strip further round the curve of the roof?

That strip doesnt look like Coachman fittings,the ends dont look to be finished off correctly and there looks to be another joint in the centre, could it be part of a repair or something?

The vent also looks very close to that joint, sure the water's not getting in there?
.......
Andy

Post last edited on 28/03/2014 09:29:10

Message posted by Howard 50 on 28/3/2014 at 10:15am
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Hi Andy,
Thanks for the Post.
Yes, the to the rear of the strip is the plastic end panel that is a one piece fitting, no joint.
The other end of the strip is finished off the same, no end cap.
There is no other joint in the middle of the roof of the van.
I did think the leak could be from the roof light, but the seal looks good and there is no sign of any water damage around the roof light inside.
I've added two new photo's into my gallery, sorry don't know how to "post" them here. They show the outside plastic end panel and also the inside of the van roof looking up a the water damaged bit I have cut out. You can see the aluminium sheet roof, the white plastic end panel and also a wooden batton which is just under the aluminium strip. I know it looks extreme, but there is a false ceiling panel, part of the cupboards, which will cover the repair.

As always, any advice most welcome.
Thanks
Howard

Message posted by AndyDW on 28/3/2014 at 11:11am
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Howard, my Coachman roof is a little different to yours (earlier Mirage).

Looks a bit of a bodge without an end cap, thats why I wondered if it had been a previous repair.

You really need someone to join in this thread that has a later Coachman like yours, or has had one of those strips off.

Hope someone notices at the weekend, and starts to post and advise you.

.........
Andy

Message posted by Howard 50 on 28/3/2014 at 11:23am
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Thanks Andy,

As the weekend is looking warm I may start to try and get the strip off..........carefully !

Thanks again.

Howard

Message posted by Howard 50 on 01/4/2014 at 11:01am
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Hello to anyone who reads this update.

I did the repair this weekend. The aluminium strip on top of the roof is just stuck on with mastic ! No screws !. To remove, put masking tape along the edges of the mastic and I also put some on the strip itself. Then use a very sharp knife , I used an extending stanley knife which was not too bulky so I could get flat onto the roof when I cut. Cut horizontally into the mastic seal from both sides. It took several cuts along each side, but the strip starts to lift and then any remaining mastic can be cut as it is exposed. Lift off the strip and clean off ALL the old mastic from the strip and roof. The joint is just a lap joint with a few screws along the edge to hold the aluminium roof sheet down. I put a few extra screws in as the sheet was lifting in places, but be mindful of any electrics that may be underneath ! I then put fresh masking tape along the strip and the roof, so that when I reapplied the strip and the sealant squeezes out I can clean off and then leave a clean straight edge when I remove the masking tape. I then filled the joint with sikaflex 512 and put then tightened up the screws so the sealant squeezes out. I then filled the strip with sealant and carefully covered the joint, pushing down along the strip to squeeze out excess sealant. Clean off excess and remove masking tape. I then used a wet finger to smooth any lumpy bits and hay presto....sealed roof ! Keep the joint dry for 24hrs to allow the sealant to cure . I used just over 1 x 300ml tube of Sikaflex, but on reflection I probably over filled the strip as quite a bit did squeeze out on the final fit.
Hope this helps someone else in the future. Please note I am not a professional caravan repairer, just someone who likes DIY and begrudges paying vast sums of money for parts and labour, when with a bit of effort I can do the repair myself. Total cost for this job 18. for 2 tubes of sikaflex, oh and a bit of masking tape.
Happy caravaning !
Howard

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