Best way to patch a crack in fresh water tank?

charlesfarm · 08-06-2018, 07:57 PM

We have a 3-year old 26BHS. One of the fresh water tanks has a small crack in it that leaks a bit (about a drop every few seconds). What would be the best way to patch this type of plastic? The spot is pretty accessible, I just want a patch that will work ... and last.

Thanks!

mohok1 · 08-10-2018, 11:08 AM

Had a small leak/crack in mine for years. When it starts to drip I just put a bucket under it. Have tried Spray on Flex Seal, various glues/epoxy. Nothing has worked. I have some Eternabond Roof tape that I'm going to try. Will post if it works.

bdreinv · 08-10-2018, 11:13 AM

Tanks shot my buddy has been trying to get his to stop dripping a couple years.Depending if its cold or hot outside leaks more or less.Tanks are expensive, bucket works good to. Thanks

TWP723 · 08-10-2018, 11:47 AM

Flex Seal!

Just kidding. Not sure that stuff works or not.

oldmanAZ · 08-10-2018, 11:53 AM

Quote:

Originally Posted by TWP723

Flex Seal!

I've seen the commercials on TV. Did it work for you?

DocBrown · 08-10-2018, 11:55 AM

If it's not too big of a crack you might want to try JB Plastic Weld. Their products are the best when it comes to sealing small holes and cracks. I've seen JB Waterweld used on car radiators and hold up very well.

Another option. Most holding tanks are made from ABS plastic. ABS plastic can be welded. A plastic welding kit is around $55 at Harbor Freight. Lots of online tutorials. Might be a more permanent repair than JB Plastic Weld.

TWP723 · 08-10-2018, 12:12 PM

Quote:

Originally Posted by oldmanAZ

I've seen the commercials on TV. Did it work for you?

Oh I don't know, I was only kidding. I've never used it. The funny part is, I have a can of it at home..for some reason. Don't even remember buying it.

Grumpy · 08-10-2018, 12:35 PM

There are numerous plastic tank repair kits on AMAZON or online. I would use that and then cover with Eternabond tape.

BudMor · 08-11-2018, 06:16 AM

The best way is to stop drill a small hole at each end of the crack then slightly v groove with a dremel then plastic weld it.

You can get the plastic welding kits from harbor freight or amazon. Make sure you use the proper rod material for your tank.

https://www.youtube.com/watch?v=FDSfXe_oFRg

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