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Faking Level - 1/4 " Differential Between Rooms

 
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Old 01-01-2019, 06:05 PM   #1
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Faking Level - 1/4 " Differential Between Rooms


I'm laying down a click lock vinyl floor through out two rooms where there is a 1/4 " differential at the door thresholds. What is the best way to make a seemless transition between the rooms? Over what distance would I need to do this to make it not noticable?
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Old 01-01-2019, 06:13 PM   #2
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Re: Faking Level - 1/4 " Differential Between Rooms


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Originally Posted by personalt View Post
I'm laying down a click lock vinyl floor through out two rooms where there is a 1/4 " differential at the door thresholds. What is the best way to make a seemless transition between the rooms? Over what distance would I need to do this to make it not noticable?
16 feet

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Old 01-01-2019, 06:26 PM   #3
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Re: Faking Level - 1/4 " Differential Between Rooms


Keep the door closed.
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Old 01-01-2019, 08:16 PM   #4
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Re: Faking Level - 1/4 " Differential Between Rooms


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16 feet
Wow - I was hoping for more like 4'.

One thought was to 1/4" plywood to the lower space. But there is a weird underlayment there now, it is half inch think and looks almost like grey drywall... no paper but it is 1/2 thick and dense like drywall. I believe it is for sound isolation, house is about 20 years old but I couldnt find any labeling on it. I just feel plywood and then a slightly less dense material and then more plywood might not be the best solution.

Plan b would be to find another underlayment but plan was to use Lifeproof viynl plank flooring they frown on installs over anything other then plywood. I assume the concern is that if the underlayment is soft it will pull on the seams.
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Old 01-01-2019, 08:25 PM   #5
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Re: Faking Level - 1/4 " Differential Between Rooms


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16 feet


4' is fine

Plenty of rooms that aren't even 16' long and 1/2" out of level.
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Old 01-02-2019, 03:08 AM   #6
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Re: Faking Level - 1/4 " Differential Between Rooms


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...But there is a weird underlayment there now, it is half inch think and looks almost like grey drywall... no paper but it is 1/2 thick and dense like drywall....
Sounds like homasote.
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Old 01-02-2019, 11:13 AM   #7
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Re: Faking Level - 1/4 " Differential Between Rooms


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Sounds like homasote.
I think this is it, this was super helpful as it is a product I have never seen before. In my neck of the woods we do most of our sound proofing on the ceiling side by decoupling the drywall

I am likely just going to put 1/4 plywood over the main room(with lower floor), attaching it with 18 gauge staples. That will even out the rooms. In the homeasote manual they do have an option for installing plywood over it when doing vinyl tile installs or installing other material where you need it to be really flat. I might look at gluing the plywood to the homasote with the hope of maybe cut down on impact noise transfer. Need to find a suitable glue though and I am a little concerned about gluing down such thin plywood.

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