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Author Topic:   3M-5200 Health Hazards
tabasco posted 04-18-2002 07:31 AM ET (US)   Profile for tabasco   Send Email to tabasco  
Purchased some 3M Marine adhesive sealant fast cure 5200 and read the rear of the package.There was a large warnig sign about birth defects.

So here is my question .......Is this the best stuff to use to fill small holes in the fiberglass? I am removing the small strap holders that came with the two six gallon tanks on my new Montauk I need to fill the small holes before installing my 27 gallon Pate tank. West Marine suggested the 5200 in White. Is this the best stuff for the job?

whalerron posted 04-18-2002 08:38 AM ET (US)     Profile for whalerron  Send Email to whalerron     
I would fill the holes with epoxy and then, if necessary, finish the job with gel coat. You can color the epoxy and get a good looking repair.
jimh posted 04-18-2002 01:08 PM ET (US)     Profile for jimh  Send Email to jimh     
3M-5200 is an adhesive.

I would fill the holes with WEST System epoxy, gelcoat, or MarineTEX epoxy.

Tom W Clark posted 04-18-2002 01:27 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
3M 5200 is a polyurethane adhesive caulk which will work perfectly for what you are trying to accomplish, which is to seal up some small holes which will not show after the new tank is installed.

If the repair is going to show and you want it invisible, then I recommend you use some gelcoat patch paste that is color matched to your hull in that area. An even more thorough repair would have the hole prefilled with epoxy as whalerron suggests, and then topped off with gelcoat patch paste.

You would not put gelcoat patch paste on top of a polyurethane caulk because the caulk is flexible. If all you are trying to do is seal up the old holes then the 5200 will be about 1/100 of the labor of the epoxy and gel coat repair. Your call.

As to the danger of the chemicals in the 5200 I suggest you put the caulk in the hole and not up your nose.

des posted 04-18-2002 02:49 PM ET (US)     Profile for des  Send Email to des     
You may also want to use rubber gloves when using both West Systems and 5200. I have gotten severe skin allergies on the more sensitive parts of my body from absorbtion of these products through my hands.
Bugsy Malone posted 04-18-2002 03:18 PM ET (US)     Profile for Bugsy Malone  Send Email to Bugsy Malone     
Hey Hot Sauce, don't worry whatever defects you got you ain't going to get any more --- bang bang

5200 the cure all, hah hah!

If you just want to seal the holes use BoatLife about half the price. Since the thing is a new boat why do a job half "way" --- get a West small repair kit and fill them suckers.

lhg posted 04-18-2002 05:36 PM ET (US)     Profile for lhg    
I assume the hole's in the non-skid floor of the boat? If this is the case, consider putting a short 3/4" long same size screw back in the hole, set in a little Boatlife clear caulk, which will look better than attempting to gelcoat it over, which will never look good in non-skid.

I have done this in several places on my Whaler's floor, and they look fine, actually like factory work for some mystery connection! The trick is to use a flat head ss philips screw, and to countersink the glass floor so that the screw head is flush.

tabasco posted 04-18-2002 09:49 PM ET (US)     Profile for tabasco  Send Email to tabasco     
Since it will be under the tank and no one will see it, I just want to make sure that there is no leaking into the hull. I think I will use your idea.
Chris J posted 04-19-2002 11:27 AM ET (US)     Profile for Chris J  Send Email to Chris J     
Since this thread started out asking about the safety of 5200, I thought it might be worthwhile to remind everyone that:

1. Anyone working with epoxy or polyester resin, or for that matter, just about any adhesive or patching product used to repair boats should always wear gloves and eye protection at least. Tyvek suits and respirators are not overkill, for that matter. Nearly everything we use to fix boats is toxic and most of the products can have cumulative effects that may not become apparent for a long time.

2. It is a good idea to keep kids away from uncured resins and adhesives.

3. Anyone who is pregnant or in poor health should stay away from uncured resins and adhesives.

That's what the 3M company is trying to say when they put warnings like that on their stuff...

lhg posted 04-19-2002 03:09 PM ET (US)     Profile for lhg    
The other thing about 5200 is that it is a very slow curing ADHESIVE, as JimH mentioned above, and it not meant to be used a sealant or caulking. The polysulfide BoatLife caulking products are excellent for sealant use, better than plain silicone caulking.

5200 was actually developed by 3M for BONDING the the top skin of a conventionally molded boat to the hull skin at the gunwales. I'll bet Whaler now uses it for bonding the third liners into the boats. That's why it's so hard to remove - it's meant to be a GLUE.

jimh posted 04-20-2002 10:27 AM ET (US)     Profile for jimh  Send Email to jimh     
[Changed TOPIC; was "Chemical can cause birth defects"=--jimh.]
acseatsri posted 04-20-2002 10:47 AM ET (US)     Profile for acseatsri  Send Email to acseatsri     
>>I assume the hole's in the non-skid floor of the boat? If this is the case, consider putting a short 3/4" long same size screw back in the hole, set in a little Boatlife clear caulk, which will look better than attempting to gelcoat it over, which will never look good in non-skid.<<

Wow, what a GREAT idea! I've got holes where previous owner moved the leaning post back 6" and have been trying to conceal the holes created by his action (moved it back to original position, I think he was a "jumbo"!). I filled them with epoxy, now I think I'll redrill them to a smaller size so the head isn't huge yet large enough to hide the hole. Thanks for the suggestion!

lhg posted 04-21-2002 02:43 PM ET (US)     Profile for lhg    
I had to use the countersunk screw idea on my brand new Whaler, but it came out looking fine! I had ordered my Outrage with the RPS loose, not installed, since I was going to raise it up 6" on teak blocks. Well, the Dealer's boatyard rigger thought this was a mistake, and screwed it into the brand new floor where HE thought it should go, and crooked at that! Since it was WAY to close to console, I now had 8 exposed screw holes to deal with. But as mentioned, this method worked fine and nobody thinks anything of it.
buddydog posted 04-21-2002 08:06 PM ET (US)     Profile for buddydog  Send Email to buddydog     
Epoxy and gel coat will still show signs of a repair even if the most experienced of craftsmen do the job. If you are entering a boat show, strip the boat and apply new gel coat to the entire boat thats the only way to repair without some signs. If you are not on the boat show circuit use 5200 and don't waste your time

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