Mobile Home Floor Repair

[kmitchl]

Looking for guidance on repair of a mobile home subfloor. It is a mid 90’s vintage single wide so the original floor is particle board. I have cut out all of the water damaged areas. Considering OSB or plywood for the replacement. Plan to put down vinyl plank flooring over the subfloor. Looking online it seems there as many opinions on this as there are parts to the human anatomy. Anyone have experience with this?

[Graysonhogs]

Looking for guidance on repair of a mobile home subfloor. It is a mid 90’s vintage single wide so the original floor is particle board. I have cut out all of the water damaged areas. Considering OSB or plywood for the replacement. Plan to put down vinyl plank flooring over the subfloor. Looking online it seems there as many opinions on this as there are parts to the human anatomy. Anyone have experience with this?

My opinion is plywood. Better surface area for adhesion of the plank flooring.

[flywise]

Plywood, I have done a hundreds holes in mobile homes.

[kmitchl]

Plywood, I have done a hundreds holes in mobile homes.

Plywood it is. Any thoughts on partial floor replacement versus total floor replacement. Many of the online sources say total replacement. In my case the remaining floor is sound. I don’t find a good reason to replace. Once we get the subfloor replaced we plan to spray foam the bottom of the trailer.

[CabezaBlanca]

Plywood it is. Any thoughts on partial floor replacement versus total floor replacement. Many of the online sources say total replacement. In my case the remaining floor is sound. I don’t find a good reason to replace. Once we get the subfloor replaced we plan to spray foam the bottom of the trailer.

I would replace the entire floor in the room with rot. That's just me though.

[S-3 Ranch]

I would replace the entire floor in the room with rot. That's just me though.

I usually have done that in trailer bathroom or laundry room

[Shake N' Bake]

I've done similar reapirs on my house. In your case I would go with plywood.
Make sure that you use a short 2x4 to brace between the existing subfloor and the new plywood between each joist. If you don't you will feel the floor flex when you walk over.

[bowhntrmatt]

Advantech decking. Use adhesive and screws.

[doright]

You may need some floor leveler. The thickness of old vs. new will probable be a little off. You will notice it when installing the plank.

[kmitchl]

You may need some floor leveler. The thickness of old vs. new will probable be a little off. You will notice it when installing the plank.

Any recommendations for a leveling compound?

[Jaker]

Doing one now went with plywood, are you going with a moisture barrier under the lvp?

[Buckshot4900]

Keep in mind… the subfloor on mobile homes is installed before any walls are built so you will have to add some support wood if you cut to the walls in any direction.


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[kmitchl]

Doing one now went with plywood, are you going with a moisture barrier under the lvp?

Have not gotten to that point. What are the recommendations? My preference is for glue down.

[kmitchl]

Keep in mind… the subfloor on mobile homes is installed before any walls are built so you will have to add some support wood if you cut to the walls in any direction.


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Plan to put in blocking at the joints and using liquid nails on the joist.

[mastercraftka]

I have done this and plywood is the only way to go you need that strength.