Watch out for wood floors

  • We are currently upgrading MFK. thanks! -neo
Probably orientated strand board, aka OSB. Used almost exclusively in wooden stick built houses.
It swells and litaraly will crumble. Floor joists are often "engineered lumber" OSB.
Years ago I helped build a 2500 sqft house. With just two carpenters, working all summer. The sub floors 3/4" OSB. Got rained on about 4 times before we got the roof up.
Many of the sheets, swelled pulling the nail head through the wood. The once 3/4" flat floor became 1.25" thick and severely warped.
I have seen OSB sub floors in a kitchen with a minor drip behind a wall. Require a complete restoration.
 
I am not sure what this pertains to, OSB is dif than sub flooring, neither does water well.
 
to expand a bit, your carpeted floor will be CDX ply wood, 3/4", OSB will be on the house siding and roof, sub flooring will be your bathroom/kitchen floors as it gives a smoother surface floor for Linoleum and the such.
 
to expand a bit, your carpeted floor will be CDX ply wood, 3/4", OSB will be on the house siding and roof, sub flooring will be your bathroom/kitchen floors as it gives a smoother surface floor for Linoleum and the such.
That is how it should be done. I have seen a lot of houses built during. The 2003 Iraq war when materials were hard to find. With 100% exterior grade OSB, roof, floors and walls.

The house I was building, was also in a no building code state

I am pretty sure that the OSB engineered floor joists are, normal practice.

At least their were apartments built with concrete for fish keepers to rent.
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I am just a jack of the trades. I always thought the subfloor was attached to the floor joists. Then the floor was next up.
 
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This is how they use to build them. 2" × 6" rough cut, actual dimensions. With 1" hard wood floors attached. Built in 1886. 1" x 6" exterior sheeting with plaster lathe on the inside. Tornado proof up to an F-3. Hurricane proof up to an F-4.
 
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