Is a plywood header above window in 80's home normal?

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wetcoast
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Is a plywood header above window in 80's home normal?

Post by wetcoast » Mon Jul 22, 2019 2:21 am

Hey guys. I'm in the process of renovating the basement in my 1984 home. Just finished ripping off the old drywall. The plan is to replace the fiberglass insulation with Rockwool (R12 as framing is 2x4 instead of 2x6) and re-do the poly-job (wasn't 80's insulation amazing? :? ).

I noticed something interesting above the window in the attached photo. I was expecting a series of cripples above the header, with insulation in-between, but instead I have a long sheet of plywood (spacer?). Is this normal? From what I've read, it's common to have an uninsulated cavity above a window, which doesn't make much sense to me. Would it be worthwhile to rip-out the plywood and install cripples and insulation?
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Shannon
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Re: Is a plywood header above window in 80's home normal?

Post by Shannon » Mon Jul 22, 2019 9:11 am

That is a very long window ! I’m going to say it’s close to 10’! I would guess that that is all header up there for that span of opening?
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A. Spruce
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Re: Is a plywood header above window in 80's home normal?

Post by A. Spruce » Mon Jul 22, 2019 10:59 am

yep, there's no way that is a hollow header. If you're seeing plywood, it's either a laminated header or an LVL style header
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wetcoast
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Re: Is a plywood header above window in 80's home normal?

Post by wetcoast » Mon Jul 22, 2019 2:06 pm

I've attached a couple additional pictures that shows it a lot better. They stuck the poly in front of it like the rest of the wall. It is indeed a 10 ft window. I'm might drill a small hole into it to see if there's anything behind.
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A. Spruce
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Re: Is a plywood header above window in 80's home normal?

Post by A. Spruce » Mon Jul 22, 2019 2:58 pm

I am certain that is either a laminated beam, made up of 2x or a full dimension 4x header, it is not plywood.
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Shannon
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Re: Is a plywood header above window in 80's home normal?

Post by Shannon » Mon Jul 22, 2019 3:25 pm

Ya that looks like lumber now with the close up. What is the total height?
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