RV holding tanks (grey & black water) can be damaged by flying rocks, or dragging on rough terrain. Having a leak can be messy, and in most area’s is illegal. Replacing a whole tank can be costly, and what if it happens while you are out on the road? This could create some real challenges.
Minor damage can be repaired fairly easily, inexpensively, and pretty quickly. Most holding tanks are made of ABS plastic. You can purchase a holding tank repair kit or you can buy similar supplies from a local hobby shop. All you need is a gap filling cyanoacrylate adhesive with separate activator (similar to super glue, but thicker and dries slower) some sand paper, and fiber glass cloth.
Repairing a crack
- Empty the holding tank
- Clean off any dirt or grime around the damaged area (make sure it is dry)
- Drill a small hole at each end of the crack, this will keep it from spreading.
- Cut a piece of fiberglass cloth a couple of inches larger than the damaged area.
- Saturate the fiberglass cloth with cyanoacylate glue.
- Use your hand to spread the fiber glass cloth over the damaged area. (wear gloves)
- Once the fiber glass is in place apply the accelerator and you will have an instant bond.
This repair is strong and long-lasting too. The tank should be ready to use in 15-20 min.
Do you have a holding tank disaster story? I’d like to hear it.