MDF WALL BOARD SEAMS - HELP NEEDED

5 years ago

last modified: 5 years ago

We had MDF wall boards installed on a wall in our home. The carpenter filled the seams with MH Ready Patch and then primed and sanded the seams. Two coats of paint were then sprayed on the wall. As you can see from the pictures below the seams are still very visible. Any ideas on how to get the seams to blend in? Thank you!

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Comments (6)

PRO
PPF.
5 years ago
What are "MDF wall boards"? A bit of background on the project and a picture that's not a closeup would be helpful.

What does your carpenter say about fixing this?
bsecc
Original Author
5 years ago
MDF is medium density fiberboard. I posted a picture of the wall from a distance. Thanks for the feedback.
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PRO
PPF.
5 years ago
What does your carpenter say about fixing this?

It won't be easy now that it's painted
bsecc
Original Author
5 years ago
He’s not sure. He put the MDF Boards up with Liquid Nails. He is hesitant about putting any more putty on it. He is also hesitant about sanding more because he is worried about damaging the MDF boards. Any ideas would be greatly appreciated!
cat_ky
5 years ago
Why would you use MDF rather than sheetrock, which would be much easier to tape and mud and get decent looking seams. I have never heard of walls in a house being mdf. It is in your house, correct?
PRO
PPF.
5 years ago
I don't have a solution.

I would have done this in drywall using beads made for this. You can buy 1/4" drywall and install over the top of the MDF.

House paint sands poorly, and my guess is that anything done to the seams now will always show.

This should have been perfected at the primer stage using the correct primer, but even if the joint looks perfect, it may show a crack in the future.

Generally, seams should also be staggered in a random pattern so they do not create vertical lines.