How do I seal the overflow on a bath tub to use for ducks pool.

[Klutch]

Most bathtubs are made of fiberglass. Fiberglass is one of the most repairable materials. With a little bit of cloth and resin it shouldn’t be too big of a deal to patch over the overflow holes. I would bet that a $15-$20 patch kit would be plenty to do a couple bathtubs.

Cast iron.

 

[tlcmurphy]

You don’t need to seal the overflow unless you’re filling it past that point, usually pretty high up. You do need to seal the drain though