how much plywood do i need to cover these areas

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  #1  
Old 10-05-10, 10:09 AM
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how much plywood do i need to cover these areas

i just bought a house and the second floor carpet and top 1/4" on masonite was soaked with pet urine for who knows how long. the heat brings the smeel out. so i took it all out. right done to the oringal sub-floor of 1x4 boards. i am having carpet put down and was told i should put down 1/4" wood over it so the padding dont go between the spaces on each board and show through the carpet over time.

what is the best yet cost effective stuff i can use,.

i was thinking 1/4" plywood.

these are the room sizes.
14w x 22L
14w x 22L
6w x 6L

Let me know how many sheets of 4x8 i need to do. i was thinking 21 sheets would do it.. is that enough?

Thanks,
Joe
 
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  #2  
Old 10-05-10, 10:30 AM
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A general rule of thumb for buying materials is to purchase 10% more than you calculated. That will allow for trimming and cutting and ooopsies.

You have 652 s/f to cover. Each sheet is 32 s/f. Add 10% and you get a total of 717 s/f. That would be 23 sheets. Any unused full sheets can be returned for a refund.
 
  #3  
Old 10-05-10, 10:39 AM
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Originally Posted by Wayne Mitchell View Post
A general rule of thumb for buying materials is to purchase 10% more than you calculated. That will allow for trimming and cutting and ooopsies.

You have 652 s/f to cover. Each sheet is 32 s/f. Add 10% and you get a total of 717 s/f. That would be 23 sheets. Any unused full sheets can be returned for a refund.
thanks,

would material would you recommend to use. carpet is going to be put over this. so i was thinking 1/4"

is something like this good? or please recommend something if that snot good
Tri-PLY 1/4 in. x 4 ft. x 8 ft. Moisture Resistant Plywood Underlayment - 492-930 / 431-178 at The Home Depot
 
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Old 10-05-10, 10:54 AM
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I'd go 1/2" minimum. 1/4" gives virtually no structural support.
 
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Old 10-05-10, 11:07 AM
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Originally Posted by chandler View Post
I'd go 1/2" minimum. 1/4" gives virtually no structural support.
there is the oringnal sub floor there already 1" x 4" strips .

so the 1/4" over that is just to make it smooth and not for support
 
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Old 10-05-10, 11:54 AM
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So the 1/4" masonite is all you're replacing? Did the urine penetrate the 1x4" strips?

If it did, you need to paint them with a sealing primer first, then 1/4" plywood on top would duplicate your original floor height
 
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Old 10-05-10, 09:29 PM
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Originally Posted by mitch17 View Post
So the 1/4" masonite is all you're replacing? Did the urine penetrate the 1x4" strips?

If it did, you need to paint them with a sealing primer first, then 1/4" plywood on top would duplicate your original floor height
no the urine didnt penetrate the 1x4" strips. ontop of the masonite there was also 2 layers of vinyl tiles ... so i am going to pick up some 1/4" plywood and put that down.. if i go any bigger than that i will have to cut doors and i dont want to do that.
 
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Old 10-06-10, 08:05 AM
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here is a picture of the original sub-floor that will be covered with 1/4" plywood.

 
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