filling gaps and priming MDF

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  #1  
Old 08-04-17, 03:57 PM
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filling gaps and priming MDF

so i've taken on making a mudroom bench in my closet but unfortunately the plaster walls were not completely straight and i have gaps close to 1/4" on both sides of the mdf top bench seat from the walls. whats the best way to seal this gap? (IE. joint compound, caulk?) then when those gaps are filled what kind of primer/sealer do i use for the mdf. its my first time using mdf and unsure of the materials properties and how it will react to regular kill-z primer that i'm going to use on the plaster walls.

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Old 08-04-17, 04:29 PM
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Trim it with a base shoe or quarter round moulding the caulk and paint. I like to use a sandable primer on mdf like SW wall and wood. Fill nail holes, sand them, prime, then sand the primer with 120 grit and wipe dust before painting. And lightly sand between coats of paint with 180.
 
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Old 08-04-17, 08:10 PM
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thanks for reminding me about shoe moulding. totally slipped my mind.
 
 

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