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Subject Author Date
rubber flashing boot Kevin Vickery 03-23-2008
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Posted by Robert Allison on March 23, 2008, 11:22 pm
marson wrote:
> wrote:
>
>>Greets all,
>>
>>I'm looking for a place to buy a "pre-formed synthetic rubber flashing
>>boot" to make a waterproof seal around a pressure-treated 4x4 on a deck.
>>I've seen such things mentioned in books, but can't seem to find a source
>>for them. I've not exhaustively checked my local building supply as that
>>would take forever but the biggest ones do not have them.
>>
>>Help appreciated, flames ignored.
>>
>>Thanks,
>>Kevin
>
>
> Not to necessarily disagree with the other posters because I don't see
> it working with a 4x4, but to answer your question,
> http://www.watertighttech.com/products/roofing/specs/accessories/pipeboot.shtm.
> You might contact this company and see if you can find a dealer in
> your area.

They DO make a flashing detail for things like posts, but they
are not all rubber or neoprene and they are wildly expensive.
This is one that we have looked into buying but realized that we
could make something on site that worked just as well, if not
better. Plus our method cost about 1/25th as much as the product
sold for. Take a look at this site and scroll down to the
bottommost picture on the right. Notice the rubber boot inserts
and you will see that one of them is square.

http://www.spinflashing.com/waterproofing-spin-flashing.html

--
Robert Allison
Rimshot, Inc.
Georgetown, TX

Special 468x60
Posted by tbasc@bellsouth.net on March 24, 2008, 8:17 am
> marson wrote:
> > wrote:
>
> >>Greets all,
>
> >>I'm looking for a place to buy a "pre-formed synthetic rubber flashing
> >>boot" to make a waterproof seal around a pressure-treated 4x4 on a deck.=

> >>I've seen such things mentioned in books, but can't seem to find a sourc=
e
> >>for them. I've not exhaustively checked my local building supply as that=

> >>would take forever but the biggest ones do not have them.
>
> >>Help appreciated, flames ignored.
>
> >>Thanks,
> >>Kevin
>
> > Not to necessarily disagree with the other posters because I don't see
> > it working with a 4x4, but to answer your question,
> >http://www.watertighttech.com/products/roofing/specs/accessories/pipe....=

> > You might contact this company and see if you can find a dealer in
> > your area.
>
> They DO make a flashing detail for things like posts, but they
> are not all rubber or neoprene and they are wildly expensive.
> This is one that we have looked into buying but realized that we
> could make something on site that worked just as well, if not
> better. =A0Plus our method cost about 1/25th as much as the product
> sold for. =A0Take a look at this site and scroll down to the
> bottommost picture on the right. =A0Notice the rubber boot inserts
> and you will see that one of them is square.
>
> http://www.spinflashing.com/waterproofing-spin-flashing.html
>
> --
> Robert Allison
> Rimshot, Inc.
> Georgetown, TX

Interesting site
T

Posted by Kevin Vickery on March 25, 2008, 3:03 pm
Thanks Robert, T, Brian and Ricodjour for sharing your expertise! Fellows
like you make this a really good group.

I tried making a boot out of Grace Ice and Water Shield, but it was really
difficult to get the joint where all 3 planes intersected to be strong and
to last. I wasted a ton of time in the shop trying to pre-fab the flashing
& counterflashing out of copper, and I saw the phrase "pre-formed synthetic
& rubber flashing
boot" show up in a google search (even referencing 4x4 posts) I thought it
looked like a better solution. But when I tried to drill further to find a
source it proved elusive.

While it will probably wind up being another time-burner, I'm currently
trying another approach which is to make a mold master from a 4x4 bolted
onto a flat base, make a fillet around the base with bondo and then cover
the whole thing in wax or some other mold release.

I'll over lay that with strips of coarse nylon cloth (the stuff used for
speaker covers) which have been soaked in a mixture of GE silicone
dissolved in VM&P Naptha. The cloth adds some strength to the silicone and
being a bit stretchy itself allows the end product to conform to odd shapes
without tearing.

If it works, I'll make it into a small injection jig so I can turn them out
next time without a lot of work.

Thanks again to all,
Kevin

>Greets all,
>
>I'm looking for a place to buy a "pre-formed synthetic rubber flashing
>boot" to make a waterproof seal around a pressure-treated 4x4 on a deck.
>I've seen such things mentioned in books, but can't seem to find a source
>for them. I've not exhaustively checked my local building supply as that
>would take forever but the biggest ones do not have them.
>
>Help appreciated, flames ignored.
>
>Thanks,
>Kevin


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