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Sealing Of Caravan Seams


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#1 Inspector Bob

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Posted 04 July 2005 - 11:03 AM

There have been many instances quoted of peoples vans suffering from the effects of the dreaded water ingress. The only known way of curing this would appear to be careful renewal or redoing of the mastic seals especially around awning rails and the screws which fix them to the walls.

Has anyone heard of any product which can be applied during normal cleaning or maintenance which could be used to help stop the gaps in the mastic becoming problematic. My first thoughts being to use a wax type car polish which could be spread on the van, into the seams and polished off. The small amounts left would be pushed into any crevices and gaps and would help seal the seams and rails.

Whilst I really like using the Fenwicks and probably other proprietory cleaners and am happy with the results are we creating a monster for ourselves by encouraging the gaps to be unfilled or even cleaned out.

If anyone knows of a product which could be used to fill the minor gaps before they become an issue it may help many people who are suffering from this problem.

Lets not get into any ridiculous debates on semantics, sensible comments and advice only please.

Cheers

Bob

#2 largada

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Posted 04 July 2005 - 05:17 PM

hiya bob

not sure what the products called but it comes in small tubes and is a specialist yaught silicone. it is very thin and runny so that it runs into small cracks and tears and seals them up.

maybe someone on the forum knows its name but i got mine whan i needed it from a caravan center in cornwall so you could try your local caravan shop.


regards


largada B)

#3 carabiker

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Posted 04 July 2005 - 05:31 PM

There have been many instances quoted of peoples vans suffering from the effects of the dreaded water ingress. The only known way of curing this would appear to be careful renewal or redoing of the mastic seals especially around awning rails and the screws which fix them to the walls.

Has anyone heard of any product which can be applied during normal cleaning or maintenance which could be used to help stop the gaps in the mastic becoming problematic. My first thoughts being to use a wax type car polish which could be spread on the van, into the seams and polished off. The small amounts left would be pushed into any crevices and gaps and would help seal the seams and rails.

Whilst I really like using the Fenwicks and probably other proprietory cleaners and am happy with the results are we creating a monster for ourselves by encouraging the gaps to be unfilled or even cleaned out.

If anyone knows of a product which could be used to fill the minor gaps before they become an issue it may help many people who are suffering from this problem.

Lets not get into any ridiculous debates on semantics, sensible comments and advice only please.
Hi Bob
ou can have a look at this webb site:-Caravan sealing products  http://www.your-timeout.co.uk/.
I do not know of any body that has used this product  you will have to use your own judgement.

Dave


Cheers

Bob

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#4 Paul_B

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Posted 07 July 2005 - 02:24 PM

Bob You have a very valid point,

Another problem with the small gaps, is that in winter water freezes in them and makes bigger gaps, :(

#5 Big Tim

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Posted 09 July 2005 - 12:46 PM

Hi Bob

I'd be very wary of using anything like this as when the van does need to be resealed it could cause problems

I'm currngly about 60% of the way through resealing my Avondale Landranger as a DIY job. I decided on this project after being quoted £1000 for the whole van by a dealer who reported poor damp proof reading although another dealer had supposedly resealed one of the poor areas only a year ago. As I was recently made redundant the financial saving appealed and I, also, had extra time to spare.

It is a long and messy job but not beyond the capabilitis of a reasonable DIYer with a little help from wife and sons with lifting on/ :D off large sections of rail I got a caravan club leaflet and advice on this and other caravan forums. One thing which has, however, made my job more difficult is that someone has at sometime added "squirts" of a silicone-based mastic behind some of rails. I suspect the dealer who had supposedly resealed this area. Whilst the original mastic is relatively easily removed with plenty of elbow grease and white spirit the silicone sealer isn't and is a TREMENDOUS PAIN to remove. Even silicone sealant solvent didn't help much.

My advice therefore would be reseal fully, as necessary, either yourself or a trusted dealer.

I'll be glad to share more of my experiences. If you're interested just ask.

Regards
:D
Tim

#6 hymerman

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Posted 12 July 2005 - 08:41 PM

There have been many instances quoted of peoples vans suffering from the effects of the dreaded water ingress. The only known way of curing this would appear to be careful renewal or redoing of the mastic seals especially around awning rails and the screws which fix them to the walls.

Has anyone heard of any product which can be applied during normal cleaning or maintenance which could be used to help stop the gaps in the mastic becoming problematic. My first thoughts being to use a wax type car polish which could be spread on the van, into the seams and polished off. The small amounts left would be pushed into any crevices and gaps and would help seal the seams and rails.

Whilst I really like using the Fenwicks and probably other proprietory cleaners and am happy with the results are we creating a monster for ourselves by encouraging the gaps to be unfilled or even cleaned out.

If anyone knows of a product which could be used to fill the minor gaps before they become an issue it may help many people who are suffering from this problem.

Lets not get into any ridiculous debates on semantics, sensible comments and advice only please.

Cheers

Bob

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Hi Bob,
I would, as others have said, renew the mastic on all the strakes, not forgetting the roof if appropriate.
I had an Award Tri-star that had water in the roof and it cost me £1500 in trade-in drop.
My experience of British vans has taught me not to trust their quality, I have found mastic missing in places. ? was this deliberate for it is water egress that can prompt a van change. I opted for a German Hymer had it now for over 5 years and not looking to change.

#7 ricpop

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Posted 13 July 2005 - 05:22 AM

I beleive there is a product called caratape that sticks over the joints and seals them that way. Sorry no other details.

#8 Inspector Bob

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Posted 15 July 2005 - 02:22 PM

Thanks to all who have responded with info and advice. Luckily my van has just had the all clear on its annual service. Two of my friends however are not so lucky, both have big problems and are going through the resealing and drying out process. sealsdirect.co.uk supply many sections for the caravanners and sikkaflex seems to be the only real mastic. I will keep looking for any other products which could be used and post the info if available.
A typical for instance being waxoil which was a marvellous product as it solved many a motorists nightmare of underbody rust again water ingress to the bodywork via crevices and damaged paintwork, obviously can't be used here but some product somewhere will do the business I'm sure.

Again thanks for the info and advice.

Bob

#9 alex b

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Posted 14 June 2011 - 04:17 PM

i have found a little leak on my window but reckon the whole could do with resealing. what i was planning on doing is getting some sealent and going round everything making a neat job................


any thoughts.

#10 Lefthand Down

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Posted 14 June 2011 - 04:26 PM

hiya bob

not sure what the products called but it comes in small tubes and is a specialist yaught silicone. it is very thin and runny so that it runs into small cracks and tears and seals them up.

maybe someone on the forum knows its name but i got mine whan i needed it from a caravan center in cornwall so you could try your local caravan shop.


regards


largada B)



It is called Captain Tolley's Creeping Crack Cure. It looks like milk and runs into a gap ans sets. It stopped my boat taking on water .:)
http://www.route11.c...CFcoa4Qod8zZsKg There must be other places to buy it if you Google it.

#11 ALH

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Posted 14 June 2011 - 05:22 PM

Have often wondered if a strip of strong exterior tape (or plastic) could be placed to cover the join between roof and wall (awning rail). Even if only put where it can't be seen it would surely help?

Al

#12 gump

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Posted 14 June 2011 - 09:18 PM

captain tollys can be got from you caravandealer sillicon is not good if you have alloy pannels you need a non setting sealant like silka flex 2 types one is a bonding sealant and one is non set .

#13 trace1962

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Posted 15 June 2011 - 09:15 AM

captain tollys can be got from you caravandealer sillicon is not good if you have alloy pannels you need a non setting sealant like silka flex 2 types one is a bonding sealant and one is non set .

Would you recommend buyiing the captain tolley and where would you use it please.

#14 AlandMel

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Posted 15 June 2011 - 11:50 AM

Yes get some Trace! You can use it on any place water might get in - rails, seals, fittings, screws, anything. It is thinner than water, so finds its way into the smalest pin hole or hairline crack, then sets clear like silicone. If it dissapears into a seam or behind a rail, give it 20 min. and apply some more. Any excess/run off can be cleaned off with meths. I have used it on my boats for years and it is excellent stuff. I cured a leaky window with it about 10 years ago and it still hasn't let a drop in! Its only about 6.00 a pot so give it a go. I went round the whole van with it before last winter and will again before next winter.

B)

#15 trace1962

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Posted 15 June 2011 - 03:41 PM

Yes get some Trace! You can use it on any place water might get in - rails, seals, fittings, screws, anything. It is thinner than water, so finds its way into the smalest pin hole or hairline crack, then sets clear like silicone. If it dissapears into a seam or behind a rail, give it 20 min. and apply some more. Any excess/run off can be cleaned off with meths. I have used it on my boats for years and it is excellent stuff. I cured a leaky window with it about 10 years ago and it still hasn't let a drop in! Its only about 6.00 a pot so give it a go. I went round the whole van with it before last winter and will again before next winter.

B)


I think I will buy the bigger one, looks very good value for money. Cheers for that information.
Tracie




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