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Old 03-11-2012, 04:45 PM   #43
dhagin
builder, anti-builder, rebuilder -- Moderator
 
Join Date: Mar 2009
Location: oahu
Posts: 13,076
A hypothetical - Has anyone ever built a home with backer board over all areas with water pipes behind them? Walls, ceilings, everywhere?

If you're concerned, use backer. Or, as it appears you're doin, build properly and worry no more. Seal both Kerdi & tile at penetrations too.
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dana

"the road to hell is paved with osb, mastic, pre-mixed latex 'grout' or 'thinset', "
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