[C320-list] Sealant/caulking

[Ken Geiger]

For Canadians, BED IT is available from Marine Outfitters on line or at their store in Kingston, ON.  See at 

https://www.marineoutfitters.ca/index.cfm?category=10427%7C11795&product=39379382&code=BIBT&CFID=170004193&CFTOKEN=53732197

Regards

Ken Geiger
Northern Dream #765
On Georgian Bay

 

 

 

---- Original Message ----
From: Troy Dunn <troutwarrior at gmail.com>
To: C320-List <C320-List at catalina320.com>
Sent: Mon, Sep 18, 2017 6:28 pm
Subject: Re: [C320-list] Sealant/caulking

+1 for the Bed It tape from Maine Sail.   I used it for bedding in
replacement opening portlights on the cabin top last winter and could not
be happier with the results.

On Mon, Sep 18, 2017 at 5:38 PM Warren Updike <wupdike at hotmail.com> wrote:

> I switched to butyl rubber tape a few years ago after reading advice from
> Maine Sail blog. Here is the article: https://marinehowto.com/bed-it-tape/
> I used these techniques in rebedding chain plates, hatches, and other
> hardware. The chain plate effort was an experiment and so far it has worked
> well. There should be a bit on this topic in the Google archives.
>
> Warren and Pattie Updike
> 1994 C320 "Warr de Mar" #62
> Middle River, Chesapeake Bay
>
> -----Original Message-----
> From: Chris Burti [mailto:clburti at gmail.com]
> Sent: Monday, September 18, 2017 9:36 AM
> To: 320
> Subject: Re: [C320-list] Sealant/caulking
>
> Let me pass on some tips for working with butyl tape.
> 1. When you need to make a joint, overlap it by the width of the tape. Then
> cut across at a 45 degree angle, remove the triangle cutoff on top strip,
> lift the top strip and remove the triangle waste on the bottom. This
> creates a scarf joint that seals perfectly when the hardware is tightened
> down. You can use this technique for square corners as well.
>
> 2. If you are having trouble with round corners, cut a three inch section
> of tape and roll it in your hands like a noodle. Lay it down around your
> curve and roll it flat with the beer bottle you just emptied. Scarf the
> joints as above.
>
> 3. I  have awls in most of my several tool kits made from grinding a long
> tapered point on old Phillips screwdrivers where the tips had broken or
> worn down. Use one to make your hardware holes.
>
> Fair winds,
> Chris Burti
> *Commitment,* #867
> Farmville, NC
>
>
> On Sun, Sep 17, 2017 at 9:51 AM, Dave Hupe <hoopdtwo at yahoo.com> wrote:
>
> > I have used butyl tape, Dow 795 and several 3M sealants.......all this
> > summer after having purchased our boat this April.
> > I rebedded my center cabin Bomar hatch with butyl tape which worked very
> > well.  However, it is hard to make 90 degree or curved corners.  I
> slightly
> > overlapped the tape where I did the corners.  You need to be careful not
> to
> > make the overlap areas too thick if you can't tighten hardware down
> enough
> > to make sure everything seals when compressed. You might also be able to
> > butt the tape tightly at transition points, since it should squeeze
> > together at the butt edges and seal.
> > I think butyl works good when you are dealing with smaller wood/sheet
> > metal mount hardware that easily penetrates the tape during mounting.
> > However, where you have large bolt type mounting hardware, you can't just
> > lay the tape over the holes and punch the hardware through it.  So, it
> > becomes tough to deal with properly sealing around the hardware.  That is
> > why caulk type sealant may be better in such circumstances.
> > I have used 3M products several times and am upset when I use very little
> > and the tube hardens very quickly thereafter. It also dries essentially
> > hard and can dry out over time. The Dow 795 sealant adheres extremely
> well,
> > stays flexible/rubbery after curing, and has very good elasticity (so it
> > can accommodate future "movement"/flexing without leaking).  The
> partially
> > used tube can be sealed and it stays good for quite a while.
> > Dave Hupe
> > 1994 Cat320 (hull #32)
> > Holland, MI
> >
> >
> >
>
>