I have a second floor fiberglass shower pan that has a leak that's been staining my ceiling below. I'm pretty sure the leak is coming from drain adapter. The water stain is directly below the drain adapter. The drain fitting is a B&K 133-301 drain. I'm pretty sure the leak is coming from the location where the adapter flange should be caulked between the shower pan and the underside of the flange. I poured a ring of water around this area and it slowly leaks by it. I'm thinking that this shouldn't drain by.

Does anyone know if its possible to unscrew this flange slightly and raise it up and re silicone then re-tighten without getting to the bottom of the pan? I know there is a nut on the underside, my hope is that that stays with the drain and I get lucky?

I know its stretch but I thought I'd ask. Has anyone had luck with an external bead of silicone around this drain adapter to stop a slow leak?

Trying to fix without tearing apart the ceiling.

Thanks
Ray

Hi Ray:

Since it is a brass drain you should be able to fix this without cutting any pipes... if you're lucky!

You will need to cut a hole in the ceiling below and then you can reach in and up and loosen the strainer nut. Once the strainer nut is loosened you should be able to push up a bit on the old pipe/strainer, clean the gunk away and then install new silicone or putty under the flange of the strainer and reinstall the nut.

They make a strainer wrench just for this job... see image. They are sold at most of the larger home supply stores.

Let us know if you have more questions...

MARK