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Prepare Trim Surfaces (Sanding and Deglossing)

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Interior Trim Painting Hacks. DIY How To Paint House Trim Work.

What happens here

Before applying new paint, the existing semi-gloss latex trim paint surface must be thoroughly prepared. This involves a detailed inspection for any imperfections like nicks or dings. Any detected imperfections are sanded down. Then, these areas are filled with spackle to create a smooth, even surface. After drying, the spackle is sanded smooth using a 3M sanding sponge. Finally, to ensure optimal adhesion of the new paint, the entire trim surface is treated with a liquid deglosser, specifically Krud Kutter Gloss-Off, or a similar product like M1 Deglosser. This step ensures that the new paint will bind effectively to the old glossy surface, preventing peeling or poor finish. Alternatively, if a deglosser is not used, extensive sanding of all trim surfaces is required to create a rough enough profile for paint adhesion.

Goal: Ensure proper adhesion of new paint by preparing trim surfaces.

Tools and materials

  • 3M sanding sponge — Sanding down imperfections and roughing up surfaces
  • Krud Kutter Gloss-Off — Liquid deglosser to prepare glossy surfaces for new paint adhesion without extensive sanding
  • Spackle — Filling nicks and dings in the trim

What they say

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we go. Well, prior to any of the painting, we got this all masked off. And this is a semi- gloss trim paint on here. Was a latex trim paint. And we went around, checked it really good for any nicks or dings. sanded any nicks or dings, filled anything with spackle, sanded that with just a 3M sanding sponge, and then uh we went around with our gloss off cuz we want to make sure that we got a good surface that our paint's going to bite and bond to really well. And so we always use a liquid glosser. Right here, we just used a crud cutter liquid de glosser. We typically have several different options to use. We use an M1 deg glosser also, but just make sure you use a deg glosser or you got to sand all your trim to make sure it's going to get a good bite and you have a rough enough surface. Okay, got

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