Roof sealer, any ideas

Discussion in 'Motorhome Chat' started by elizabethh7802, Sep 14, 2012.

  1. elizabethh7802

    elizabethh7802 Read Only Funster

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    When we bought our mh we discovered lots of leaks (it is our first home and we had no idea to look at when we bought it but that is another story!) all of which we seem too have solved except around one of the roof lights. We have re-sealed it with the weather mastic but our damp metre is still reading 38. I guess one option is to change the roof light but another idea is to seal the roof if possible. Is there a product that you can paint on the roof to seal it? If not, any ideas what we can do to try to find the leak and solve it.
    Thanks for any help.
    liz
     
  2. Swiftroy1

    Swiftroy1 Read Only Funster

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    Have you removed the rooflight and put a new bed of mastic or run a new bead of the squirtable type?
     
  3. elizabethh7802

    elizabethh7802 Read Only Funster

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    Haven't removed the roof light, so we will do that next. We hoped the new mastic externally would solve problem.

    Is there a roof sealant you can buy, it would be handy to know anyway.

    Thanks for the reply.
     
  4. Swiftroy1

    Swiftroy1 Read Only Funster

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    I'm afraid there are no shortcuts to keeping out the dreaded damp but it's a reasonably straightforward job. My van is 17 years old and aluminium skinned and I too was about to source a sealer paint for a section of my van roof which I think could have become porous. I'll let you know if I find a suitable one.
     
  5. Goldenoldies

    Goldenoldies Funster

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    The sealant my son used on his bus conversion is made by SOUDAL called fix all classic, he has done all seals and reset roof lights. No leaks so far.
     
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  6. Gooney

    Gooney Funster

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    I think you ought to remove the roof light and leave it out for while to let any moisture that will be trapped in the roof laminate escape or evaporate, you have probably sealed in the moisture that was originally there.
     
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  7. Dodgey

    Dodgey Funster

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    Don't know if it's any use to you guys but, in RV land you can get an Elastrometric Roof paint, made by Hengs, I beleive there are others, designed to paint on pretty much anything. You put on a few coats, east west and north south with typically a roller, brush where necesary though it can be sprayed.

    Used it on our first, rather leaky RV, and that was that:thumb:

    We'd resealed all the roof vents, and gone round with lap sealant on joints and perforations, she was 28 years old at the time (still going according to DVLA at a mear 35 years) and as said no more leaks.

    Ebay, or more specifically RVSpares (motorhome medic) tend to have it as well as Starspangledspanner.

    You end up with a slightly mottled effect in bright white with a rubbery texture, cleans easy and is designed to bounce back some of the suns heat.

    If you check it out, be seated at the time, it ain't cheap but to quote a certain add, it does exactly what it's say's on the tin:thumb:
     
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  8. elizabethh7802

    elizabethh7802 Read Only Funster

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    Thanks for the replies.
    Ours is 17 years old too so I would be interested to know how you get on.
    We have used the Soudal sealant and it has worked brilliantly on the other leaks but we are still having problems with this one roof light.
     
  9. Willy Bippet

    Willy Bippet Read Only Funster

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    Dodgy ....
    You said that your old MH was still going at 35 years according to DVLA

    Is that info available to anyone then?
     
  10. elizabethh7802

    elizabethh7802 Read Only Funster

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    You can check vehicle status on the DVLA website, just pop in the number plate and it brings up the info for you.
    HTH
    Liz
     
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  11. highwayman

    highwayman Funster Life Member

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    Hi Elisabeth
    Remove the rooflight, carefully clean away all the old sealant and put a bed of sikaflex down. the tape type or from a gun, clean away the excess and the job's a good-un :thumb:




    cheers nige
     
  12. pappajohn

    pappajohn Funster Life Member

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    I agree with Gooney......you've sealed in the damp and thats what your meter is detecting, and it could be weeks or months before it dries out fully

    still worth removing the roof light and resealing with Sikaflex sealant.

    usually easy enough.

    remove the internal screws and lift away the inner trim and blind/screen then lift off the out part of the vent.....it will be stuck but careful use of a paint scraper will free it.

    clean off the old sealer, ensure the roof is dry and apply a new thick bead of sikaflex to the roof opening and refit in reverse order cleaning off any excess before it cures.
     
    Last edited: Sep 14, 2012
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  13. jimmysingh

    jimmysingh Read Only Funster

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    reply

    you can use a tile out side of that area with a good Roof sealer to make it work probably
     
  14. scotjimland

    scotjimland Funster Life Member

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    first post with a link to a business .. :spam:

    never heard of a van with 'tiles'' is that an aussie thing ?

    that's a long way to ship a van for a roof repair.. :Doh:
     
    Last edited: Oct 31, 2012
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  15. Snowbird

    Snowbird Funster Life Member

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    Just shows the power of Google Jim.
     
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  16. scotjimland

    scotjimland Funster Life Member

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    yeah.. I guess so Dave

    maybe this explains..

    outback camper van :Laughing:

    [​IMG]
     
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  17. Snowbird

    Snowbird Funster Life Member

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    Is that one of those demountable campers.
     
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  18. deanroofing

    deanroofing Funster

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    Try Cromapol comes in 5 litre tins, very flexible, we just carried out a contract on Luton Airport with it, no need to remove the Rooflight just seal round it.
     
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  19. Jaws

    Jaws Funster Life Member

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    Just shows.. bellends are all over the world !!!!!!!!!!! :Eeek: ( oh and URL deleted from link )
     
  20. stcyr

    stcyr Funster

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    Plastikote .... :thumb:
     
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