Martin Logan Statement 40XW Manuel D'installation page 20

STEP 13: SHEET ROCK FINISHING PART 1 - JOINT
COMPOUND APPLICATION
13a Apply quick 45 minute joint compound to the install
board. As noted in Step 9, the sheet rock will be
sitting proud of the install board surface. Apply joint
compound to the face of the install board, bringing
it up level with the sheet rock. Be sure to fill in the
connecting sheet rock sheet joints
13b After the compound has cured, sand in preparation for
the lightweight coat.
NOTE: The sheet metal face of the install board must
be exposed . Sand the area free of sheet rock mud
buildup before proceeding to the next step .
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