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Old 01-02-2011, 08:38 PM   #1
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A little help with laying laminate


I'm finishing our nursery for the end of March for our first child Right now the room is stripped down to the original plank subfloor which is 1 x and runs diagonal to the joists.

I plan on screwing the planks to the joists and setting all the old nails if necessary and then laying probably 1/2" plywood over top before the floor (unfortunately forcing me to trim door jambs). My question about this step is should I put anything between the planks and plywood? or just screw down the ply?


The other question is about the actual finished floating laminate. I know it has to be free-floating with a 1/4" gap around the outsides but I want to install sliding closet doors. I'll have to screw the bottom track through the laminate effectively fixing it in place...is this okay?

Thanks a lot for any advice.
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Old 01-03-2011, 12:53 AM   #2
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U should use an adhesive, like liquid nails, and then screw the planks on. As for screwing into the floor, that's ok.
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Old 01-03-2011, 08:58 AM   #3
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definitely use construction adhesive
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Old 01-06-2011, 09:56 AM   #4
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I would not do anything which attaches the laminate to the subfloor. Also, 1/4" is a little low for the expansion gap. 3/8" is the minimum usually noted on laminate installation instructions. Laminate expands and contracts quite a bit. If your product has a click-together locking system, those joints can break and come apart if any part of the floor is constrained (i.e. by screwing them down).

I am a laminate manufacturer and I can tell you one of our biggest complaints is buckling/popping due to insufficient expansion gaps and/or locking part of the floating floor to the subfloor. A floating floor must be allowed to float!

I would find a way to attach the door track to the subfloor without constraining the laminate.

Dave
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Old 01-08-2011, 11:44 AM   #5
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I was thinking about this...so does that mean that i should leave a gap around my HVAC vents (supply and floor return) as well?

I think I could built a strip of subfloor up and fix the closet track to it...I would just have to figure a way to attach some trim to cover the gap.
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Old 01-08-2011, 11:56 AM   #6
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Don't glue the plywood to the plank. screw it . nothing between the planks & ply.
Make sure the floor is flat . 1/8" in 6' or 3/8" in 10'
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Old 01-08-2011, 04:18 PM   #7
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Pete - you are getting there :-) You can use either sub-flooring as you said, shimmed up oak strip you stain with matching color, or the parting strip (looks like flat wide "T" with short leg) that is sold to complement your laminate. It is made from oak, matches your color and is worth the $15 to $20 or so. No need to shim this one.
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Old 01-08-2011, 08:51 PM   #8
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Thanks, I'll look into some options for the closet track...$20 is well worth a professional look with minimal farting around :-)

So can I get an experienced flooring person to answer: Glue and screw 1/2" ply to planks or just screw?
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Old 01-08-2011, 10:58 PM   #9
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Read post #6
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Old 01-09-2011, 07:55 AM   #10
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Pete,
As for the closet doors, buy the doors with the bottom metal track all the way across the opening. You can drill a 3/4" holes where the scew holes are. Go just thru the just the laminate not the sub-floor. The metal track will hide the holes and still allow the floor to move. I have been doing it this way with all laminates since Pergo first came to the U.S.. I have not had any trouble.
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Old 01-09-2011, 02:56 PM   #11
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Thanks Floor doc...problem with the internet is you don't know who is an expert and who has done it once or twice.

Woodman: Thanks for the suggestion, the clamping tension of the track screwed to the subfloor won't hold the laminate in place?
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Old 01-09-2011, 03:32 PM   #12
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Just snug the screws to the track. This will still allow the laminate to move.
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Old 01-09-2011, 03:49 PM   #13
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Thanks Woodman, this will be my solution for the closet track. I realized that the doors actually hang off the top track, the bottom is only a guide so I don't need to torque it down too much.
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Old 01-09-2011, 06:53 PM   #14
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When you install the base , or 1/4 rnd set a couple of business cards on the floor next to the wall . nail what ever you are installing , remove the cards .
This will allow the lam to move .
I see a lot of pros nail it tight to the floor .
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