Hello,

I'm planning to build my own wall panel, where the idea is to use MDF, Plywood, or Masonite boards mounted on the wall. I'm now considering how to avoid cracking in the paint when everything is finished, where the boards meet each other. I'm quite certain that regular spackling will become visible relatively quickly.

Of course, I've thought about hiding the seams/gap between the boards with a decorative trim or board over them, but that's not the aesthetic solution I would prefer.

Has anyone tried this with wood filler? Would it work better than spackle?

Or does anyone have another idea?
 
P
What do you want to achieve, like how should the final result look?
 
Join the seams properly with biscuits, dowels, or similar to reduce movement. Make sure it dries thoroughly before painting.
 
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Fredrik Person
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Den ofrivillige klåparen said:
What do you want to achieve, like how should the final result look?
As I said, a breast panel with panels. Let's use the following image as a reference for the sake of it. Nothing is set in stone yet.

A chair against a wall with wainscoting panels, showing the design and texture for reference in avoiding MDF seam cracking.

I want to avoid cracking in the panel where the joints of MDF boards are put together.
 
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Anonymiserad 618974
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F Fredrik Person said:
As mentioned, a breast panel with boards. Let's use the following image as a reference for the matter's sake. Nothing is set in stone yet.

[image]

I want to avoid cracking in the panel where the joints of MDF boards are put together.
As mentioned, make sure they are joined together. One option could be to rout tongue and groove into them with a profiling router bit. But, it only helps if the substrate is reasonably stable. If it moves too much, you will get cracks no matter what you do. (Or, well, maybe it can be avoided if you run a roll of fiberglass fabric/renovation wallpaper horizontally over the entire panel)
 
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Fredrik Person
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