Installation Guide
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Installation - Ceramic Tile
SUBFLOOR
The subfloor and underlayment must be a
minimum 1-1/8” nominal thickness, structurally sound, cross braced between
joists, and meet a deflection rating of L/480 under ceramic tile and L/720
under marble.
- Surfaces must be structurally sound, dry and free of contaminants such
as sealers, cleaning compounds, oil, dirt and dust, etc.
- Deflection is best pre-checked with a live load and measured with a
laser instrument.
- Multiply® 3/8” is recommended for ceramic tile applications for improved
joist-to-joist stiffness.
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