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Can an ABS shower drain be extended vertically by 1 inch?

2 months ago

Hello. I bought some contraption that lets me use a drill to cut pipe on the inside or outside with basically a depth guide. Being the new DIYer, I screwed up...again. I cut my shower drain about 1/4 to 1/2 inch short. I'm installing a Schluter drain flange which says to have it no shorter than 3/4" above the slab. I'm now at 1/2" above the slab.

Is there a way to extend that drain ever so slightly or should this not be a big problem? A coupler would lift it around 2 inches which would be too much.

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