How to raise height on old cast iron floor drain

[bradlymathews]

I will need to raise the height of two floor drains at my preschool after doing some tile work over Xmas break. They are cast iron. I will need to raise them about 1". Can I get something to slip into this and adjust the height? Or is it realistic to remove that flange and replace it with something and what do I replace it with exactly?

I have done a fair bit of plumbing over 3+ decades, but commercial floor drains are new to me.

Thanks for any feedback or inspiration!

 

[Breplum]

I'm sure you will need to break out the entirety to get a new drain in properly and that means membrane will have to be redone. Huge job.

 

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[DIYorBust]

Could you make this work?

Drain Height Extension Kit 13-3375 - The Home Depot

Give your tile floor a finished look by raising low drain screens with the use of this Raise-A-Drain Drain Height Extension Kit.

www.homedepot.com