Repair plastic grey water tank? - Fiberglass RV


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Old 05-01-2011, 06:58 AM   #1
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Repair plastic grey water tank?

My grey water tank seems to have a small leak in it, and I noticed a fiberglass patch kit at the local RV dealer for repairing the plastic tanks for $50.
It seemed to just be fiberglass and resin! (for $50)

==> Anyone know if I will encounter problems if I use conventional ($10) automotive type fiberglass repair kits on the plastic tank?
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Old 05-01-2011, 11:40 AM   #2
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Quote:
Originally Posted by Rob vanNostrand View Post
My grey water tank seems to have a small leak in it, and I noticed a fiberglass patch kit at the local RV dealer for repairing the plastic tanks for $50.
It seemed to just be fiberglass and resin! (for $50)

==> Anyone know if I will encounter problems if I use conventional ($10) automotive type fiberglass repair kits on the plastic tank?
Think they make plastic weld kits for repairing plastic,
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Old 05-01-2011, 08:04 PM   #3
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I'm with Hambone on this one. it is better to weld plastic (melt it back together using the appropriate solvent) than to bond epoxy and glass on the outside of the tank because the plastic may not flex or expand/contract at the same rate as the FG and the patch may eventually leak.

I would consult with a plastics retailer to determine what kind of plastic (prob PE) and for the best way to fix.

Kevin
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Old 05-01-2011, 09:44 PM   #4
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"Welding" the plastic is the way to go. If you can easily get to the area of the tank that needs the repair, it should not be too hard to fix.

This would do it: Plastic Welding Kit with Adjustable Temperature
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