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-   -   Temporary Screw/Bolt Hole Sealant (http://www.sailnet.com/forums/gear-maintenance/97461-temporary-screw-bolt-hole-sealant.html)

cas206 03-10-2013 08:18 PM

Temporary Screw/Bolt Hole Sealant
 
I'm removing wood and hardware from the deck and cabin of my 30+ year old fiberglass boat. Plan is to do the epoxy treatment (drill and fill) before re-installing stuff. Until then, I'm looking for advice on what to squeeze in the holes. I've seen information on avoiding silicone as it can prevent epoxy bonds. I've also seen information about the permanent nature of 5200. I don't want to cause my self a problem later on. Any recommendations?

Thanks,
Chris

sailvayu 03-10-2013 08:31 PM

Re: Temporary Screw/Bolt Hole Sealant
 
Modeling clay or Butyl tape work well for short term, if it is going to be longer I would consider a Polysulfide like Boatlife.

Capt. Wayne canning, AMS

PorFin 03-10-2013 08:36 PM

Re: Temporary Screw/Bolt Hole Sealant
 
Don't inject anything -- instead, buy a roll of aluminum tape (you can find it in the HVAC section of Lowes/Home Depot) and tear off small pieces to cover the holes. Although it has a tenacious adhesive, unlike duct tape, Gorilla tape, or masking tape, the aluminum tape won't leave a sticky mess behind and it cleans off very easily. It weathers very well. I've got a couple of screw holes I covered with it over 18 mos. ago, and the tape's still doing its job like a champ.

cas206 03-11-2013 11:39 AM

Re: Temporary Screw/Bolt Hole Sealant
 
Thanks for the two excellent suggestions. I had considered tape but dismissed it due to the issues you mentioned (messy removal) but mainly because I wasn't convinced on the ability to seal out moisture (capillary action, etc), especially when used on vertical surfaces. Does your experience with the metal tape include vertical surfaces?

I also have a supply of butyl tape that I'm planning to bed the hardware with. That would be a no cost (well...already paid) option. I think I'll try the metal tape first since it would be fast, cheap, and easy (umm...yeah the tape). The down side would be aesthetics. However, that can be a boon as well since having to look at the tape would keep me motivated to finish the project.

hellosailor 03-11-2013 12:56 PM

Re: Temporary Screw/Bolt Hole Sealant
 
What Porfin said. You can always use adhesive remover on the deck, but if you put anything INTO the holes, you'll never clean it all out again.

Look for 3M's silver masking tape, that is designed to be left out exposed in the weather for 30 days and still peel up clean. You may have to mail order it at $10/roll but for a project like this it is probably the best way to go. And unlike aluminum or mylar tape, you can tear it with your fingernails.<G>

3M's 800# is on every product, they can tell you where to find it if you can't locate it.

arf145 03-11-2013 04:00 PM

Re: Temporary Screw/Bolt Hole Sealant
 
Quote:

Originally Posted by PorFin (Post 1000880)
Don't inject anything -- instead, buy a roll of aluminum tape (you can find it in the HVAC section of Lowes/Home Depot) and tear off small pieces to cover the holes. Although it has a tenacious adhesive, unlike duct tape, Gorilla tape, or masking tape, the aluminum tape won't leave a sticky mess behind and it cleans off very easily. It weathers very well. I've got a couple of screw holes I covered with it over 18 mos. ago, and the tape's still doing its job like a champ.

Good one, PorFin! I've used duct tape in the past, and that adhesive is indeed a PITA to get off. I'll use the aluminum tape in the future.

cas206 03-12-2013 10:54 AM

Re: Temporary Screw/Bolt Hole Sealant
 
... or you can pay top dollar for the version with Marine in the name !!

hellosailor 03-12-2013 01:39 PM

Re: Temporary Screw/Bolt Hole Sealant
 
cas, you've got it backwards.

The expensive 3M Silver is not expensive, and it is not top-dollar. In fact, it is bottom dollar, it is the CHEAPEST masking tape for that job.

Like the distorted Amazon picture, which seems to show a 2" wide roll of duct tape, not the 1"x60yd. wide-core roll of this product, you've got some facts mixed up.

If you use genuine metal duct tape (which is what the metal tape is) rather than the "duck" or cloth "duct" tape and don't accidentally buy the big cheap roll of silver MYLAR tape that is sold in the same HVAC section...that stuff is expensive, and it only lays flat. You can patch lots of holes in a flat deck with it, but you can't MASK and run it around curved objects, the way a crepe paper masking tape is used. And you can't tear aluminum tape with your fingernails, so now you're scissoring.

If you want a crepe paper making tape that can be left out in the weather for a month without problems, the 3M product is arguably the CHEAPEST product that will do that job. And possibly the wrong product, at any price, for other jobs.

If you run out of pb&j for the kids' lunch, sure, you can spread caviar on the bread. That might also be a waste of the wrong product.<G>

DonScribner 03-12-2013 07:33 PM

Re: Temporary Screw/Bolt Hole Sealant
 
If it's thru bolted, get some rubber washers and reinstall the machine screws with them under the head. Be sure to tighten the nut not the screw and don't overtighten. When the rubber swells, you're good. And it doesn't look so poor-cousin as duct tape on the coaming. Oh, and by the way, I HAVE duct tape on my coaming.

cas206 03-12-2013 08:28 PM

Re: Temporary Screw/Bolt Hole Sealant
 
Quote:

Originally Posted by hellosailor (Post 1001639)
cas, you've got it backwards.

The expensive 3M Silver is not expensive, and it is not top-dollar. In fact, it is bottom dollar, it is the CHEAPEST masking tape for that job.

It's ok hellosailor... you are preaching to the choir. My tongue in cheek jab wasn't at your tape choice but at the vendors attempt to gussy up the product by adding "marine" to the title. I had looked up the tape on 3M's web site which calls it "Scotch® Weather Resistant Masking Tape 225 Silver". There is no mention of "marine" in the name. From your previous post, I was expecting a $10.00 price tag. Seeing that a 3rd party vendor at Amazon (my first attempt at searching for it) had listed the tape with "marine" added in the title for $40.00 prompted me to post the jab here. Doing some more shopping around shows the average price is actually closer to $25.00 a roll. Some places have lower price but higher "handling" charge.


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