Replies

1. 
   calvin | Oct 28, 2009 05:28am | #1

   Never had to do it but I'd be thinking of the several hundred pound filled frig over there in the corner.  And if concerned beyond that I might come up with a way of hanging these couple new partitions, perhaps slotting the fastener through the lam for the bottom plate connection.

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1. 
   FastEddie | Oct 28, 2009 05:34am | #3

   My guess is that the flooring is not going to expand much, since it is not solid wood.  It is probably made of plywood or mdf, and both are more stable then solid wood.    If you are concerned, after the walls are framed and before the sheetrock is hung you could use a MM and trim the laminate 1/2" off the framing, which would be covered by the rock and base."Put your creed in your deed."   Emerson

   "When asked if you can do something, tell'em "Why certainly I can", then get busy and find a way to do it."  T. Roosevelt

2. 
   fcamx | Oct 28, 2009 05:33am | #2

   id be tempted to nail/ screw the bottom plate right through the flooring.  you could always trace the flooring and cut it out.  tip, trim nail the flooring in the ends of a couple boards first as some of those floor boards will slip/ slide side ways when the pieces are short.  even on a long run i wont hesitate to pop a finishing nail into the board end close to the wall to keep it secure.

   id just go right through it.

3. 
   ruffmike | Oct 28, 2009 06:26am | #4

   Double stickem tape. It aint gonna move that much.

                               Mike

       Small wheel turn by the fire and rod, big wheel turn by the grace of god.

4. 
   user-201496 | Oct 28, 2009 06:46am | #5

   Just nail it, it'll be fine. I've done it before. You could always cut around the plates later if need be. My $0.02

5. 
   DonCanDo | Oct 28, 2009 03:00pm | #6

   I'm no expert, but I've seen the results of floating floors that weren't installed with sufficient room for expansion/contraction.  It's not a pretty sight.

   I think your concern is legitimate, but there are a lot of variables like what it's installed over, geographic location, size of the floor, expansion/contraction gaps at the other ends of the floor, etc.

   I would be dis-inclined to do it because if it doesn't work, the fix might mean re-installing the entire floor.  If you decide to do it by cutting around the new walls, be sure that the floor can still float through the new doorway as well.

    

6. 
   factotam | Oct 28, 2009 03:11pm | #7

   i think it is good to keep the existing floor in place and frame over it, makes for a neater and cheaper job

   if you are concerned about floor movement you could use as few fasteners as possible to attach the new bottom plate, toenail the rear of the new bottom plate to the existing wall, toward the front of the new bottom plate, drill a 1" hole in the laminate flooring and screw the new bottom plate through the middle of the  hole (just snug enough to hold it in place, but loose enought to allow expantion and contraction of the laminate floor)

    

7. 
   basswood | Oct 28, 2009 07:25pm | #8

   I have only built something over a floating floor once... and it bit me in the hindquarters. I just ran a small peninsula out over a laminate floor (see photo). The floor, even with a proper vapor barrier under it, buckled up on both sides of the peninsula during the humid part of the year. I had to go back and cut the flooring loose all the way around the base cabs I had set on the floor--PITA.

   Since then, I always remove floating flooring before installing anything. I also maintain a proper expansion gap around the installation.

   I say cut it out!

8. 
   Dinosaur | Oct 28, 2009 07:28pm | #9

   I concurr with Fast Eddie. Cut out around the plates a half-inch both sides.

   Gives ya a good excuse to finally buy a FMM anyway.  Me, I'd use my jamb saw and hang on real tight.... ;o)

   Dinosaur

   How now, Mighty Sauron, that thou art not brought
   low by this? For thine evil pales before that which
   foolish men call Justice....
   

   

9. 
   Dudley | Oct 28, 2009 07:40pm | #10

   here is an idea

     This is the panel Sill Plate     Cut out the floor between the two lines