Re: [A/S] Vulcum?

On 3/20/2012 9:22 PM, Charlie Burke wrote:
> Vulkem was one of the two sealants used by Airstream. The high VOC's of
> Vulkem forced them to change to other products among them SikaFlex 721UV
> and TremPro 635.
>
> Vulkem and it's replacements were/are used to seal roof penetrations,
> eyebrow seal doors and windows. It is also used inside the shell to seal
> joints and appliance penetrations. Those how have removed a water heater
> know all to well how well Vulkem holds up.
> My experience so far is that the Vulkem replacements do not hold up as
> well in exterior applications. I still prefer Vulkem.
>
> Arcyl R is a wicking sealer that draws up into seams and joints. It is
> used to seal the tops of side moldings and vertical seam joints. Because
> it is so runny it is not used on horizontal overlap seams
>
> Charlie
>
Why can't I use silicone on the seams?

I know I can't, I forget why....

Hunter

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