Jj

John

27/01/2011 7:09 AM

MDF vs Plywood as building material

My father is installing a pocket door, and he has to narrow the
doorway by 1 inch on the pocket side of the pocket door. He has 3/4"
oak strips he'd like to use. He was thinking of using 1/4" plywood or
1/4" MDF to make up the difference (it won't be visible as the trim
will cover it anyway). I'm wondering if either the MDF or plywood
will rot/warp/fall apart over time, and how it should be treated prior
to installation.

Thanks

John


This topic has 2 replies

LJ

Larry Jaques

in reply to John on 27/01/2011 7:09 AM

27/01/2011 8:50 AM

On Thu, 27 Jan 2011 07:09:19 -0800 (PST), John
<[email protected]> wrote:

>My father is installing a pocket door, and he has to narrow the
>doorway by 1 inch on the pocket side of the pocket door. He has 3/4"
>oak strips he'd like to use. He was thinking of using 1/4" plywood or
>1/4" MDF to make up the difference (it won't be visible as the trim
>will cover it anyway). I'm wondering if either the MDF or plywood
>will rot/warp/fall apart over time, and how it should be treated prior
>to installation.

MDF or plywood would both be OK. I think I'd prefer plywood, but I'd
like to see MDF glued on if he used it, in case it did try to separate
near the edges with a nail or screw going through it. Both are solid
enough for final shimming to fit the new jamb and trim.

--
Ask not what the world needs. Ask what makes you come
alive... then go do it. Because what the world needs
is people who have come alive. -- Howard Thurman

FH

Father Haskell

in reply to John on 27/01/2011 7:09 AM

27/01/2011 7:21 AM

On Jan 27, 10:09=A0am, John <[email protected]> wrote:
> My father is installing a pocket door, and he has to narrow the
> doorway by 1 inch on the pocket side of the pocket door. =A0He has 3/4"
> oak strips he'd like to use. =A0He was thinking of using 1/4" plywood or
> 1/4" MDF to make up the difference (it won't be visible as the trim
> will cover it anyway). =A0I'm wondering if either the MDF or plywood
> will rot/warp/fall apart over time, and how it should be treated prior
> to installation.
>
> Thanks
>
> John

Shims are standard method, adjustable, easier to set
the jambs dead plumb.


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