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Old 07-29-2014, 09:15 AM   #1
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Another flooring question

This question is mainly for Ernie but anyone else who is knowledgeable in this area is welcome to jump in! We have decided to replace the LR carpet and the ceramic tile in the kitchen and bathroom with 12" premium vinyl tiles, leaving the carpet in the cockpit area and the bedroom.

We will start the tile right behind the cockpit area and stop it at the bedroom door. I pulled up the edge of the carpet next to the wall and a small corner of the ceramic tile and there is particle board under it. I am going to do the removal of the carpet and ceramic tile myself (with my son's help). I have a professional flooring guy that will lay the tile. He tells me that the vinyl tile cannot be glued directly to the particle board, that I will have to install 1/4" plywood on top. Do you agree with him? Thanks for your help!
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Old 07-29-2014, 10:32 AM   #2
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I would agree, But glue it as well as nailing it.
I did mine last year and just nailed it and over the winter it bowed up in the middle.
I used a heat gun and pulled up the plank flooring up drilled holes in it injected glue then screwed it down and replaced the flooring.
JMHO
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Old 07-29-2014, 11:35 AM   #3
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Quote:
Originally Posted by 2dogsbarkin View Post
I would agree, But glue it as well as nailing it.
I did mine last year and just nailed it and over the winter it bowed up in the middle.
I used a heat gun and pulled up the plank flooring up drilled holes in it injected glue then screwed it down and replaced the flooring.
JMHO

Are you saying to glue the 1/4" plywood to the particle board floor?
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Old 07-29-2014, 08:13 PM   #4
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Another flooring question

Yes Joe, I would generally agree. It's referred to as underlayment. In most cases its purpose is to ease over any immediate irregularities in the subfloor, but it will also provide a better gluing surface than particleboard for the tile.

I don't like to use any glue on p-board, as the moisture can make it swell and deform. If you're having a pro do your install, he'll likely lay down the underlayment with either ring shank nails or divergent point adhesive staples, both of which are designed for the purpose to lock the material in place.

You shouldn't have any clearance problem. The underlay is about a 1/4", and you've already had that much thickness or more with carpet or ceramic.

Should be fine!
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Old 07-29-2014, 08:35 PM   #5
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I would look int glueing the 1/4 inch to the partical/wafer board too. They make adhesives for all kinds of applications...plywood to partical, plywood to wafer board, plywood to plywood etc. some are water based which probably would NOT work here but many are solvent based which would. Lots of ventilation when using these! Your flooring guy will know. Temperature swings in the Moho are extreme so I would glue and nail the plywood down. Read the entire can/bucket no matter what anyone tells you. Have read many of your posts know your a knowledgable guy, use best judgement!
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Old 07-30-2014, 06:33 AM   #6
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Your coach has OSB- oriented strand board. When you remove the tile and whatever material they adhered it with, there will be some of the OSB that comes up. You can remedy that with some Durhams Rock hard water putty,
The OSB in coaches can be up to 30 feet in length with no seams. All coaches I have done I go over that osb with new peoduct.
As for installing underlayment, if you go this route you will have many seams as it is impossible to get that in without cutting it into pieces. It must be screwed and glued as you don't want to have that material bow up, like what happened in a prior post.
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Old 07-30-2014, 09:56 AM   #7
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Thanks guys! I will be putting down the underlay. Is 1/4" plywood OK to use or is there some special material that I should use? The flooring guy told me to us 1/4" plywood.
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Old 07-30-2014, 10:20 AM   #8
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I've laid vinyl over particle or chip board, but you have to seal it really well with a good primer coat (or two). Otherwise the adhesive doesn't stick well and the vinyl moves around a bit or maybe even peels back up. Overlaying with 1/4" plywood is a much better solution but sometimes you don't have room for the extra height.
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Old 07-30-2014, 11:07 AM   #9
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The standard underlayment is 1/4 lauan sanded plywood. Better than fir but tends to splinter at the cut line. Use a fine blade. ;-)
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Old 07-30-2014, 11:35 AM   #10
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I agree with the fine toothed blade. You might also further reduce splintering by "sacrificing" blue painter's tape or masking tape on the cut lines when cutting your sheets. Remember to measure twice, cut once ... I occasionally get that one backwards - memory issues I suppose.
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Old 07-30-2014, 11:19 PM   #11
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Quote:
Originally Posted by Ernie Ekberg View Post
Your coach has OSB- oriented strand board. When you remove the tile and whatever material they adhered it with, there will be some of the OSB that comes up. You can remedy that with some Durhams Rock hard water putty,
The OSB in coaches can be up to 30 feet in length with no seams. All coaches I have done I go over that osb with new peoduct.
As for installing underlayment, if you go this route you will have many seams as it is impossible to get that in without cutting it into pieces. It must be screwed and glued as you don't want to have that material bow up, like what happened in a prior post.
We faced this decision when reflooring our coach a few years ago. My wife and I were determined to install an underlayment. Our installer pointed out that there would be many seams, and temperature and moisture changes might produce unforeseen results. Also, the screws had to be short enough that they didn't go through the OSB into the basement. That could produce another problem.

Our installer coated the OSB with rock hard water putty, then sanded it smooth. He glued our vinyl flooring onto that. That was three or four years ago, and it still looks absolutely beautiful!

Jim
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Old 07-31-2014, 07:29 AM   #12
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I have done both applications, vinyl and tile on osb, for an RV application where there is a chance of water, I would a high quality 1/4 plywood made with exterior glue, allow 1/8 inch at joints. Screw and glue the plywood to the osb, ring nails work too, use lot of them. Make sure that the screws or nails are covered with a good putty and glue, you don't want anything to telegraph thru the vinyl.

good luck, Dave
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Old 07-31-2014, 07:59 AM   #13
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Do NOT use any brush on application of any water prevention treatment for wood. Your adhesive will not be compatible with it. aka Thompsons' water seal
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Old 07-31-2014, 08:17 AM   #14
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7 months ago I sealed the osb, put the vinyl down it works great.

I didn't see a need for plywood etc.
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