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Old 03-25-2013, 07:13 AM   #31
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Need some advice for laminate


OK, so to summarize after all those posts:
*) I removed the carpet in the bedroom upstairs to put 12 mm laminate (with padding already attached onto it)
*) The flooring is OSB, and I think it is the original one (no additional layer of OSB or plywood)
*) I do have 2 boards with edges higher than the adjacent board (~3 mm), and some section of the floor are more “squeaky” than others
*) I would like to avoid to put an additional layer since I’ve already done 1 room, and there will be a difference in height with that room and the master bathroom (master bathroom is vinyl tile, so adding a ” layer + 12 mm laminate will make almost 1’ difference !!!!)
*) My idea is to sand the edges to see if I can reduce the gap (remove some nails if necessary), and put screws in between nails to reduce the squeaking
*) And if it looks satisfactory (maybe not perfect but good enough) I will lay down the Bellawood premium underlayment (from Lumber liquidator)

Does this sound a “reasonable” plan?

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Old 03-25-2013, 08:23 PM   #32
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Need some advice for laminate


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Originally Posted by french_guy View Post
This is the original flooring, and I assume that OSB is directly on the joists.....
So as far as I know, I only have 1 "layer"
don't assume = be sure. find out.

how thick is that osb ?
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Old 03-29-2013, 06:38 PM   #33
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Need some advice for laminate


Arghhh.........
I did sand my subfloor (OSB) and almost removed those two 3 mm differences. Floor is smooth.......
But now, I was verifying the level, and it's globally pretty good except that the floor goes down toward 1 side (bathroom wall)
That "slope" extend on ~3ft (width of the hallway leading to the room) to progressively end up at a little bit less than 1/2"
Well, it almost makes sense since it is a "high' traffic area (access to the master bedroom and bathroom)
How could I fix this? I could use 1/2" shims where the gap is max, but how do I do to follow that slope...???
By the way, I will install 6 mm cork before laying down the laminate...but I guess I need to fix this first
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Old 03-30-2013, 08:55 AM   #34
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Need some advice for laminate


you don't need "level". you need "flat".
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Old 03-30-2013, 09:16 AM   #35
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Need some advice for laminate


Yeah, that's the problem. Subfloor is pretty flat all over the room, but then goes down toward an inside wall. The slope is 1/2" over ~4ft. It's 1/2" against that inside wall (a little bit less than 1/2" actually)
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Old 03-30-2013, 09:48 AM   #36
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Need some advice for laminate


the slope. is it an even slope ? as in the whole floor, wall to wall in front of the bathroom goes down. or does it only slope in front of the doors ?
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Old 03-30-2013, 09:57 AM   #37
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Need some advice for laminate


you know what you should do = assemble some boxs of that laminate on the floor. see how it sets and how it fits together. this is what i did to see how i liked this flooring.

Last edited by Fix'n it; 06-20-2013 at 09:32 PM.
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Old 03-30-2013, 10:01 AM   #38
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Need some advice for laminate


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Originally Posted by Fix'n it View Post
you know what you should do = assemble some boxs of that laminate on the floor. see how it sets and how it fits together. this is what i did to see how i liked this flooring.
yeah, that's my idea...to see how the laminate can handle that slope
If it seems OK, I won't shim anything
If it's not............well, I guess I will post again
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Old 03-30-2013, 10:04 AM   #39
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Need some advice for laminate


how about some pics of the room, pointing out were the issues are.

gotta go, see ya sunday morning.
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Old 03-30-2013, 11:47 AM   #40
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Need some advice for laminate


Yes, will do
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Old 03-30-2013, 05:54 PM   #41
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Need some advice for laminate


Quote:
Originally Posted by Fix'n it View Post
you know what you should do = assemble some boxs of that laminate on the floor. see how it sets and how it fits together. this is what i did to see how i liked this flooring.
I am laying down a few planks to see how it looks like
I have noticed a spot with a sag.....Seems big with a straight edge, but not too much flexion with the laminate unto it
This sag is noticeable when I check with a straight edge parallel to the joist, but not noticeable at all when I put the edge perpendicular.....
I will lay down my laminate parallel to the joist, so I pay attention to that one

Anyway, I've read that I could use some roof felt (15 or 30 lbs) to shim where needed
Can I stack 2 or 3 layers to reach the proper thickness? Because I've also read that more than 1 layer will make some noise..... !!! Is it true?
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Old 03-30-2013, 06:06 PM   #42
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Need some advice for laminate


Quote:
Originally Posted by Fix'n it View Post
how about some pics of the room, pointing out were the issues are.

gotta go, see ya sunday morning.
Here is a quick sketch of the room
The grey area is globally flat
The red area is the one with the slope, relatively consistent along the inside wall, with a max of 1/2" along that wall
Attached Thumbnails
Need some advice for laminate-bedroom.jpg  

Last edited by french_guy; 03-30-2013 at 06:08 PM.
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Old 03-30-2013, 08:53 PM   #43
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Need some advice for laminate


OK, I thought about my problem and I think the easiest way will be to use some self leveling compound
To reduce the qty and the weight, I will put a strip of 6 mm plywood on the subfloor (along the wall), approximately 1' wide
I will apply primer on that piece of plywood and the OSB subfloor where SLC will be applied
I do have 2 questions:
1) How should I attach that strip of plywood: glue, narrow crown staples, both, other?
2) Will the primer be enough to properly apply the SLC? Last thing I want to do is to ruin the OSB.......!!! Is the primer's role to make the SLC adhere on the substrate and in the same time will it protect the substrate (plywood and OSB in my case) from the water inside the compound?
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Old 03-31-2013, 07:20 PM   #44
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Need some advice for laminate


Quote:
Originally Posted by french_guy View Post
OK, I thought about my problem and I think the easiest way will be to use some self leveling compound
To reduce the qty and the weight, I will put a strip of 6 mm plywood on the subfloor (along the wall), approximately 1' wide
I will apply primer on that piece of plywood and the OSB subfloor where SLC will be applied
I do have 2 questions:
1) How should I attach that strip of plywood: glue, narrow crown staples, both, other?
2) Will the primer be enough to properly apply the SLC? Last thing I want to do is to ruin the OSB.......!!! Is the primer's role to make the SLC adhere on the substrate and in the same time will it protect the substrate (plywood and OSB in my case) from the water inside the compound?
I didn't progress as much as I wanted this week-end....But I have put the strip of plywood (~5 mm) and I am ready to put the self leveling compound tomorrow, after 1 layer of primer. Hope it will go well...

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