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Old 06-25-2012, 03:37 AM   #1
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Question Subfloor overlay?

Gone are the 9x9 asbestos tiles! I struggled with the decision to add an overlay on top of the old tiles, or strip the tiles off. You can see what I decided, but not sure if this was the right decision. The floor had a much flatter surface with the old tiles, and after scraping the old tiles off, it leaves a rough surface.

1958 Traveler 18'


Gone is the musty smell of an old trailer, but now there is a strong odor of the tar adhesive.

Should I use a 1/4" plywood overlay?
Should I use a liquid self leveling material to fill in the roughness?
Should I do both?
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Old 06-25-2012, 07:00 AM   #2
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Wow, they look big when empty. 'What about scraping as much adhesive off as you can and then putting down an engineered floor over the little foam spacer sheet?
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Old 06-25-2012, 07:10 AM   #3
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I would think your easiest out would be to put some 1/8" plywood over the floor and then put you new floor over that. Mineral spirits will get the tar but that is a lot of work.

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Old 06-25-2012, 08:57 AM   #4
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the 1/8 or 1/4 overlay would probably work, or you maybe could use an edger, the disc type sander floor guys use to sand up near walls and corners. A coarse disc , a good respirator, and some ventilation would have it out in no time. Good luck.
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Old 06-25-2012, 09:29 AM   #5
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...or you maybe could use an edger, the disc type sander floor guys use to sand up near walls and corners. A coarse disc , a good respirator, and some ventilation would have it out in no time. Good luck.
john
NOT a good idea...the 9x9 tiles were asbestos. Sanding the black tar that remains makes the asbestos friable - not a good idea unless the proper precautions & equipment are used.

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Old 06-25-2012, 09:35 AM   #6
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You need to get rid of all that tar like adhesive before you put a sub floor in. Believe it or not, the undulations will transfer thru, even if you go as heavy as 1/4 inch.

I used 1/8 inch luan in my Argosy and then waterproofed it with a couple coats of West System epoxy.

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Old 06-25-2012, 11:03 AM   #7
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NOT a good idea...the 9x9 tiles were asbestos. Sanding the black tar that remains makes the asbestos friable - not a good idea unless the proper precautions & equipment are used.

Shari
That's where the respirator and ventilation come in.
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Old 06-25-2012, 11:31 AM   #8
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Not to be agrumentitive John, but asbestos removal is not to be taken lightly. A "normal" mask or respirator is not enough when working with asbestos - that's why there are companies that specialize in (and are mandated to be used) for asbestos abatement on commercial jobsites.

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Old 06-25-2012, 01:04 PM   #9
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Well it is good that I stopped using the torch to soften and scrape the residual tar off.
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Old 07-07-2012, 06:08 AM   #10
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I would use an adhesive remover, being a liquid it will not produce airborne particulates, nasty work, I just got through doing it myself. Then use a leveling material to repair rough areas. That's an older unit, have you gone around the perimeter with an awl to see if you have any soft spots? Most old units have rot, unless you are very lucky! I had to replace a small section of '3/4 plywood decking, and my deck was totally replaced eight years ago. Good luck!

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