Sealed Transom W/ 5200

[MAXXIE]

Wow! Talk about "Not" user friendly. I laid a bead along the underside of the rub rail & then with a wet finger smoothed it out. Then went to the other side to do the same, well, when I went back to the first section I did it was all running down the side of the boat:facepalm:. Guess I used way too much. I just hope this stuff is as good as I've been reading here. After looking at the seal along the rail I did notice that someone had tried to re-seal it at one time, I'm guessing this is where my leak is now. I dug out as much of the old silicone as I could (real PITA), & put a nice seal with the 5200. I ended up sealing everything on the transom as I could find just to make sure. I have very high hope's that this will be the cure I've been looking for. I really did not expect it to be so loose & runny though, I ended up with it everywhere, hands, arms, shirt, pants,etc... (OK, so I had a few beers & it was getting dark). Just wanted to up-date my leak search. Should be splashing it later today or first thing tomorrow.

 

[Home Cookin']

Re: Sealed Transom W/ 5200

Good luck with your splash.

Hope you got it all off the hull. Acetone may help.

When it's watery like that, it may be that the stuff in the tube needs mixing by squeezing, or it's old.

5200 is at the top for permanence, and it dries hard. It's great for sealing holes below the waterline. However, it may be better to use something flexible and less permanent on parts that may move (like when you bump the rail) or that you may want to remove.

 

[shrew]

Re: Sealed Transom W/ 5200

4200 & 5200 are basically the same, with 4200 being a bit less agressive of an adhesive, and is semi-permanent, while 5200 claims to be permanent. Though I've gotten both apart. The problem is that neither 4200 and 5200 are UV resistant. Which is why 3M tends to recommend 4000 for decks, rails and deck hardware. 4000Uv is basically 4200 which is UV resistant and won't breakdown after periods of UV exposure. Personally, I would have used 4000UV for any exterior, above waterline application.

 

[jigngrub]

Re: Sealed Transom W/ 5200

Wow! Talk about "Not" user friendly. I laid a bead along the underside of the rub rail & then with a wet finger smoothed it out. Then went to the other side to do the same, well, when I went back to the first section I did it was all running down the side of the boat:facepalm:. Guess I used way too much. I just hope this stuff is as good as I've been reading here. After looking at the seal along the rail I did notice that someone had tried to re-seal it at one time, I'm guessing this is where my leak is now. I dug out as much of the old silicone as I could (real PITA), & put a nice seal with the 5200. I ended up sealing everything on the transom as I could find just to make sure. I have very high hope's that this will be the cure I've been looking for. I really did not expect it to be so loose & runny though, I ended up with it everywhere, hands, arms, shirt, pants,etc... (OK, so I had a few beers & it was getting dark). Just wanted to up-date my leak search. Should be splashing it later today or first thing tomorrow.

I can see a picture of that stuff on TV and get it all over me!

 

[MAXXIE]

Re: Sealed Transom W/ 5200

It's a crappy, rainy day today but I'll have to venture out there to see what it looks & feels like. Tube says 72 hr.'s for full cure, but it should be good now for any touch up spots that I may have missed. I've got real high hopes that this is it, rain or shine the boats getting wet today, well, more than the rain that's falling now. Lets keep the fingers crossed.

 

[fishrdan]

Re: Sealed Transom W/ 5200

I bet Attwood 7200 polyurethane marine sealant (WalMart) would have worked like a charm!

5200 can be a pain since it "flows out", been there, done that. I bought some Attwood 7200 polyurethane marine sealant and expected (hoped) it to flow out, nope! While the 7200 looked like 5200, it acted more like caulk and wouldn't flow out. For my project it didn't work great, looks wise, but for your project it probably would have worked perfect.

I know, day late and a dollar short......

 

[smokeonthewater]

Re: Sealed Transom W/ 5200

4200 is thicker also

 

[fishrdan]

Re: Sealed Transom W/ 5200

4200 is thicker also

I wondered if the Attwood 7200 was the same thing as 3M 4200? I've never used 4200, so I wouldn't know. Funny thing about the 7200, it had almost the same consistency as 5200, but the 7200 wouldn't drip and flow like 5200. Different "stuff" in it I guess...

 

[Home Cookin']

Re: Sealed Transom W/ 5200

speaking of sealants, if you need a black seal above the waterline, like a dashboard panel, the liquid electrical tape works great. I previously used either clear or white sealants but they end up dirty, especially where they were smeared a little.

 

[MAXXIE]

Re: Sealed Transom W/ 5200

Now I'm trying to figure out how to remove the dried drips & runs. I guess I'll need to sand it a bit because it does dry rock hard. I should have cleaned it up before it dried fully, maybe just paint over it best i can, don't think it'll look too bad.

 

[smokeonthewater]

Re: Sealed Transom W/ 5200

slice it off with a NEW razor blade then wet sand

 

[MAXXIE]

Re: Sealed Transom W/ 5200

Well, good news I guess...Dunked it in the water yesterday to check if it was still taking on water. I was only going to back the back end in & keep it on the trailer & just let it sit for awhile because it was totally dead at the launch but when I saw how smooth the water was I just launched. I was out there for about 1 1/2 hours just cruzin the shore line & a few laps at WOT & kept checking the bilge area. For the most part there was nothing to speak of, maybe a little water but nothing to worry about. That was after quite awhile being on the water, then I didn't pay it much mind. When I was prepping to retrieve I flipped the switch & it pumped out I'll guess a little less than a gal. I think I took care of the leak with the 5200 all over every seam I could find on the transom. Going to the big lake today or Sunday for the entire day (well, big for around here anyway), & we'll see what happens after sitting in the water for an extended period of time. Don't forget this is a 1985 boat that has seen some action over the years & I expect it to be a bit sloppy at the seams here & there. Just updating my progress.