Plywood underlayments

Discussion in 'Remodel Forum & Blog' started by prashster, Jun 28, 2006.

  1. prashster

    prashster New Member

    Messages:
    941
    Not exactly a plumbing question, but I figure someone will know the answer:

    I'm installing a plywood underlayment (birch 1/4") on which I'm planning to put vinyl plank flooring.

    If the seams of the underlayment panels are gently butted and sanded smooth, do I need to bother with patching the seam with filler?

    Also, what about the staple holes? Do they need to be patched?
  2. Lakee911

    Lakee911 I&C Engineer (mostly WWTP)

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    1,328
    Location:
    Columbus, OH
    If it says to do it, it's better to err on the side of paranoia and fill 'em...and fill 'em good!

    I don't know what 'vinyl plank floor is' but if it's similiar to the vinyl sheet material, then this was done in a manner you describe in my kitchen by a PO---I tore up the floor. In the high traffic areas, you could see every seam.


    Jason
  3. prashster

    prashster New Member

    Messages:
    941
    Vinyl planks are strips - not the big 9 or 12ft sheets. They're laid down individually. Because they have a lot of 'natural' seams I'm not sure how well the underlayment seams will telegraph.

    It's not as simple as just being a matter of overkill. Overfilling the seams and holes can cause pops if the material gets pushed out over time.

    I hope I'm just being paranoid.
  4. eileen123

    eileen123 New Member

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    usa
  5. jimbo

    jimbo Plumber

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    Location:
    San Diego
    Even small holes like a staple divot can telegraph through a vinyl floor. I would check with the manufacturer of the vinyl; I suspect their recomendation will be that all holes and seams must be spackled, and sanded smooth.
  6. hj

    hj Moderator & Master Plumber Staff Member

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    27,251
    Location:
    Cave Creek, Arizona
    seams

    Parallel seams may telegraph but not be apparent. However, since your underlayment is probably not as long as the room, there will be cross seams and they WILL telegraph through, especially if there is any deviation between the thicknesses where the two panels meet. I might sand and fill those joints.
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