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Tile tub surround prep

13 years ago

DH put poly sheeting (Visqueen?) behind the cement tile backerboard (can't tell what brand it is on the back side)

There is new insulation, plywood sheeting, tar paper and siding on the house on the outside wall which is the biggest wall in the tub.

He says all the studs are covered by plastic but the plastic isn't a watertight seal all the way from tub to ceiling.

Do we still need to use Kerdi to fully waterproof?

Is Kerdi overkill in a tub surround with no steam?

(rain showerhead and hand held showerhead)

Should he remove the plastic if he does Kerdi?

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