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Pudsey Bear

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Reply with quote  #1 
I was wondering which was the best sealant to use, the on on the self build is leaking a bit.
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Kev [comp] 

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Don't force it, use a bigger hammer. Semper ubi, Sub ubi. 

Link to self build pictures

Link to sort of blog on facts


http://tinyurl.com/nzyry9n

2002 Bessacarr E745 Ducato
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randonneur

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Reply with quote  #2 
A friend of ours who has the Autocruise sent for a new rubber seal when his was leaking. 
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Sylvia
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SANDBAGSID

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Reply with quote  #3 
Tool station do one about £6 supposedly the same as sikaflex 512 or similar it’s called pureaflex 40 it’s in a metal tube not plastic it’s what I used and seems fine so far Kev.
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coppo

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Reply with quote  #4 
I thought any sika stuff was a big NO to reseal roof lights and windows, if you ever need to change the unit its a nightmare to remove.

I just changed the large rooflight and used hodgsons seamseal CV Non setting sealant.

It never seals good if you just put some sealant around the edges, to do a proper job you have to remove the window, clean up both surfaces and then reseal it.
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tugboat

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Reply with quote  #5 
512 is labelled as being for caravan applications and I think I used it to stick my solar panel mounts to the roof of my van.

For waterproofing seams and frames like rooflights, doors and windows I would use a non-hardening sealant to allow for the flexing that takes places when our floppy boxes rattle down roads and lanes.

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Bessacarr E725, Honda Vision, Piaggio BV350.
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Pudsey Bear

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Reply with quote  #6 
I bought some ribbon mastic to seal it down but I can't get the damned thing off so I wanted to remove the old sealant then re seal it.
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Kev [comp] 

Warning, might contain an opinion [nono]  

If you're not the lead dog, your view never changes.

Don't force it, use a bigger hammer. Semper ubi, Sub ubi. 

Link to self build pictures

Link to sort of blog on facts


http://tinyurl.com/nzyry9n

2002 Bessacarr E745 Ducato
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Boxerman23

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Reply with quote  #7 
When I changed the sealant on ours I used a multitool (them vibrating
Things ) with the silicone blade, took no time at all to remove covers and sealant. They were sealed with silkaflex. Next time I will use non setting mastic, I have twice had to tighten the screws down to stop drips, probably from hot summers and cold winters in southern Europe.
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powerplus

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Reply with quote  #8 
hi kev

i use a dow coning solvent free silicone that is specially made for outside use and is very flexable so works well in summer or winter as it allows for movement
  
i think the number is dow coning 965 screw fix have it for around £6.29

infact dow silicone is the only silicone i buy now as it just seems to work  a lot better than others i have used

i have used it for years on the van and other vans and it stays put  without lifting

i allways clean the surface with sergical spirit before applying 

i allways also mask around the item before spreading the sealent and then remove the masking tape and lightly wipe it with a wet finger again


barry
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