ACT Mud Floors Practice Questions - Advanced Certifications For Tile Installers (ACT) - Mortar (Mud) Floors Exam

What is the primary purpose of a cleavage membrane in an unbonded mortar bed assembly?

Waterproof the substrate against vapor drive Allow the mortar bed to float independently of substrate movement Increase compressive strength of the mortar bed Provide a vapor retarder for radiant heat

Correct Answer:

Allow the mortar bed to float independently of substrate movement

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