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no clue 08-28-2012 11:51 AM

subfloor
 
I'm installing 7 in hickory wood floors and have a simple question. Our home is about 50 years old and the subfloor is 7/16. There are several spots that are "soft". I'm goign to replace those boards but i didn't knwo if 7/16 is thick enough or if I should replace all teh subfloor with 3/4. Thanks

JazMan 08-28-2012 02:33 PM

So, you have only one layer of plywood that is 7/16" thick? :eek: Is it plywood? That is terrible!

Jaz

JetSwet 08-28-2012 03:43 PM

Sorry about Jaz reaction he doesn't get out much lol.
Best to replace with 3/4"

JazMan 08-28-2012 06:23 PM

Thank you Mr.Wet! :laughing: What?......terrible is too mild?

And it's Jaz's reaction.:thumbsup:

Jaz

no clue 08-29-2012 10:43 AM

Well crap not what I wanted to hear but it's what I needed to hear. I don't want to spend the money to put in a nice wood floor and have ti get messed up b/c the subfloor was not strong enough. Thanks for your help.

joecaption 08-29-2012 10:56 AM

It really needs 3/4 T & G with subfloor glue on the floor joist.
I like Advantec subbflooring.
No voids, holds fastners really well. Very resistant to moisture damage.
It comes premaked where the fastners go.

JazMan 08-29-2012 02:57 PM

I agree of course, that a 3/4" subfloor would be what you need, but....... there is no reason you have to add 3/4" to what you've got now. Go ahead if you can, but you can get away with less, and it doesn't have to be t&g. Apparently someone removed the second half of the subfloor system of your floor when something was remodeled. The other half, was probably 5/8" thick.

Jaz

no clue 08-30-2012 10:41 AM

It was 1/2 in pressed boad and I pulled it up to replace a floor joist. So (not to sound stupid) I should, and would be okay, to pull the 7/16 and replace with 3/4 T&G? I just want to make sure the floor doesn't squeak in a month (my wife wil never let me hear the end of that). If i put down 3/4 in and my 3/4 thick hickory then I will only have a 1/2 differance between the bedroom and bathroom.

JetSwet 08-30-2012 10:49 AM

Quote:

Originally Posted by no clue
It was 1/2 in pressed boad and I pulled it up to replace a floor joist. So (not to sound stupid) I should, and would be okay, to pull the 7/16 and replace with 3/4 T&G? I just want to make sure the floor doesn't squeak in a month (my wife wil never let me hear the end of that). If i put down 3/4 in and my 3/4 thick hickory then I will only have a 1/2 differance between the bedroom and bathroom.

1/2" seams alot which room would be higher if done this way?

JazMan 08-30-2012 10:51 AM

If by 'pressed boad' you mean particle board, you need to remove any other you may have on the floors. Replace it with the proper type and thickness of plywood to make the floor the same thickness as the adjoining area. Let us know what you've got on the joists in all areas.

To answer your question, yes a single t&g 3/4" subfloor is adequate for your purpose.

Jaz

no clue 08-30-2012 10:52 AM

the hallway would be higher than the bedrooms and bath. we have carpet in the bedrooms and at some point we will tile the bath but not this go around. other than pulling all the flooring what can I do to reduce the difference?

no clue 08-30-2012 10:54 AM

Jaz,
It has 7/16 plywood but it really was 1/2 plessed board like an MDF on top of that. I'm pretty sure that is what is in the rest of the house.

JetSwet 08-30-2012 10:57 AM

Quote:

Originally Posted by no clue
Jaz,
It has 7/16 plywood but it really was 1/2 plessed board like an MDF on top of that. I'm pretty sure that is what is in the rest of the house.

Can you take pic? Sounds like Masonite MDF

no clue 08-30-2012 11:02 AM

that might be what it is. I can't take a picture of it now I'm at work (as you can tell reallly working).

JetSwet 08-30-2012 11:12 AM

1 Attachment(s)
Attachment 56552

Lol work is over rated.... This is Masonite MDF aka. Medium density fiberboard. Particle board is slightly different. Either way there only good for carpet or laminate.


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