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Old 01-29-2008, 07:28 PM   #31
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Tile over asbestos tile?


Just remove any loose mastic. They make thin sets so you can tile right over the mastic. The one we used was Mapei Ultraflex3.

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Old 01-30-2008, 09:14 AM   #32
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Tile over asbestos tile?


Is this project still waiting to be done?

Those tiles do (in fact) contain asbestos. In most cases you could first use a 'stripper' to prepare the tiles and leave them in place to tile over them with MODIFIED thinset.

The problem in this case is...this room has moisture issues. The tiles adhesion to the substrate has been compromised and I wouldn't advise installing ceramic over any of this existing tile.

Your state health department can advise you on proper removal and it may not require you to hire a pro. Some states allow the homeowners to remove and dispose of the asbestos tiles on their own. If proper procedures are followed this can be done safely.

PS. Schluter's DITRA can be installed with modified thinset bottom and top. The recommendation however is to use MODIFIED THINSET to install the DITRA (Bottom) and UNMODIFIED THINSET to install the tile (Top) but this is only because using modified thinset to install porcelain tile can be problematic from a curing-time standpoint. There is nothing wrong with it otherwise.

Generally if you have the time to wait, modified thinset can be used all-around.

I dream that one day some of you "HANDYMAN TYPES"
would make a greater effort to understand the procedures used to install products and stop giving bad advice on DIY websites. There is plenty of schooling available to those that really want to know what they are talking about. To come to DIY forums and recommend baseless ideas is harmful to the DIY'er.
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Old 01-30-2008, 09:06 PM   #33
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Tile over asbestos tile?


Bud, yes...still in progress. I had plumbing and termite issues to content with. Ready to roll this weekend. Check my other thread and let me know your thoughts.

The dry ice idea is intriguing. I think that the tiles will come up pretty easy but will get the dry ice as a backup.
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Old 01-31-2008, 10:01 AM   #34
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Tile over asbestos tile?


WHAT other thread you talking about g_f?

The dry ice thing has never delivered great results for me. I'll admit it's fun to play with but unless you have a lot of it and can keep it very flat it's tuff to work with I think.
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Old 02-02-2008, 11:32 AM   #35
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Tile over asbestos tile?


Bud...2 hours 15 minutes...all done, cleaned up and ready to move on! It was work to get the tiles up but I got them all. Encapsulated with 20# of Ardex Feather Finish. Thanks for your advice! I will post pictures later.
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Old 03-03-2008, 11:27 AM   #36
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Tile over asbestos tile?


I went to a Home Depot tile lesson. The instructor said it is ok to tile over asphalt tiles if the asphalt tiles are well-attached and the floor is even. Remove wax, apply a bonding agent such as REDGARD MEMBRANE and then thinset and tile. I think this is the best way to go because if you remove the asphalt, even professionally, asbestos could float around for a long time.
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Old 03-03-2008, 01:25 PM   #37
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Tile over asbestos tile?


I just wonder what happens, years from now, when someone decides to remove the tile and up comes the asphalt stuck to the bottom of it? It'll have to be dealt with at some point, at the latest when the house is bulldozed.

I guess for me it depend on what I'm doing with the place, though. If it was my personal home, and I knew for sure I'd keep it until I died, maybe I'd go over the top of it. But anyplace that I'd use as a rental or possibly sell soon, I'd rather get it out of there.

Too much liability, imo, if the next person pops up the tile and asbestos is there, and you didn't disclose it when you sold (since obviously you'd know if you tiled over it).
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Old 03-03-2008, 04:12 PM   #38
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Tile over asbestos tile?


WHATEVER!

The RedGard wasn't at all necessary tho, you kinda got duped there.
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Old 03-03-2008, 04:43 PM   #39
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Tile over asbestos tile?


You may THINK this is the best way to go. But for my money im gonna listen to a tile guy with years and years of positive experience over a guy at HD that learned from a couple of hour seminar.

Tile is only as secure as what is underneath it. Even with all the precautions you mentioned, this job would still fail because the tile underneath is not fastened to the floor well.

The Redgaurd suggestion reeks to me of a sales ploy
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Old 03-03-2008, 10:31 PM   #40
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Tile over asbestos tile?


It's a half-year cottage.
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Old 03-07-2008, 11:30 PM   #41
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Tile over asbestos tile?


I've got 9x9 probably asbestos vinyl tile with the black adhesive underneath on a concrete slab. Parts of the slab never had tile, but were painted.

From what I've read I should go return the mapei UF1 I bought and get instead a bag of mapei UF2.

I was considering installing ditra over the black adhesive (that I now know to call cutback). Is it necessary? Is it helpful? Does it have any insulation value (Wisconsin concrete basement floors are cold)? Roughly how much does it cost per SF? What would be reasons that I would or wouldn't want to install it? There's no moisture problem. This is a basement in a house on the top of a hill where the soil is very sandy. So there's never flooding.

Or should I tile directly over the cutback with the Ultraflex 2?

I got some vague answers on another tile forum, just wondering what advice I'd get here.

Thanks!
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Old 03-08-2008, 03:07 PM   #42
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Tile over asbestos tile?


Hello. I am new to this forum, and below I have asked for advice on my living room flooring dilemmas.

In my living room, I have about the same tile as gone_fishing has (asphalt), and I have some questions about putting in different flooring. I have a concrete slab ranch built in the early 50s, and right now, there is carpet installed over the tile. I would like advice on my dilemmas and questions: Dilemma 1: Carpet is installed over the tile, and I would like to remove the carpet because I have dogs and cats and the carpet is constantly filthy from dirt and dog hair. The problem is the installers (someone from before I bought the house) nailed the tackstrips directly through tile into the cement floor, and when I try to pry up the tackstrips, it leaves some cracks and chips in the tile and cement-- how can I remove the tackstrips with the least amount of damage to the floor and the edge of the concrete slab?? Dilemma 2 - underneath the carpeting is this old tile. I do not want to remove it because it could be dangerous and costly to dispose of. So, once the carpet and tackstrips are removed, can I encapsulate the entire living room with something like garage floor epoxy?

Question -- I am looking for the best flooring recommendation for my situation -- 2 dogs, 2 cats, lots of dirt and water drops. I have a very limited budget so I will be installing the new flooring myself, so I was considering laminate and/or Allure from Home Depot. Does anyone have any better suggestions? People on this forum have made such negative comments about laminate and Allure, that I am almost out of options. I am about function more than prestige, so I am not looking for something fancy, just very budget sensitive, something neutral colored and attractive that is durable, easy to wipe up and doesn't hold odors.
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Old 03-08-2008, 03:20 PM   #43
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Tile over asbestos tile?


Also, I do have laminate in my kitchen -- and it has held up very well considering the dogs -- one is a large dog. The previous owner did not splurge on laminate, and after researching the brand and style of the leftover box, I know it is not top quality.

Also -- when walked over by dogs, does all laminate make them sound like horse hooves??? I don't like the loud clicking, and I figured the previous owner put all the laminate down in the the kitchen and hallway without underlayment. It does appear they used a moisture barrier -- I pulled up the edge of the carpet in several places and I can see moisture barrier sticking out from the laminate a little.

So, is it possible to get a quieter laminate, or can I expect that of all of it?
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Old 03-30-2008, 08:12 PM   #44
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Tile over asbestos tile?


Quote:
Originally Posted by Rehabber View Post
Do not use Ditra in this application. Ditra requires unmodified thinset and that will not adhere to the old tile
Ditra only requires the use of unmodified cements over the top side. In fact, when adhering ditra to any surface, you should use a thinset that is compatable with the surface you are bonding it to. In your case, i would use a modified cement to adhere the ditra to the sub surface and use an unmodified cement to adhere the tile to the ditra. In any case, make sure the structure below can support the tile as ditra does not add as much vertical support to the structure as Durock while it does offer greater anti-fracture properties. If you choose to use Durock, you will also need to set it in a thinset mortar that is compatable with the sub-floor as well as using a fastener. There are durock screws or you can use roofing nails which are both acceptable.
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Old 03-30-2008, 08:39 PM   #45
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Tile over asbestos tile?


Quote:
Originally Posted by tgf40 View Post
I've got 9x9 probably asbestos vinyl tile with the black adhesive underneath on a concrete slab. Parts of the slab never had tile, but were painted.

From what I've read I should go return the mapei UF1 I bought and get instead a bag of mapei UF2.

I was considering installing ditra over the black adhesive (that I now know to call cutback). Is it necessary? Is it helpful? Does it have any insulation value (Wisconsin concrete basement floors are cold)? Roughly how much does it cost per SF? What would be reasons that I would or wouldn't want to install it? There's no moisture problem. This is a basement in a house on the top of a hill where the soil is very sandy. So there's never flooding.

Or should I tile directly over the cutback with the Ultraflex 2?

I got some vague answers on another tile forum, just wondering what advice I'd get here.

Thanks!
Im not sure how much insulation value there is in ditra but it should create some barrier between the cold concrete and the new tile. the ditra should help absorb some of the cracking that can occur in concrete slabs and prevent it from distributing through to the tile. Its not bulletproof and won't absorb wide cracks over 1/8" inch. Ditra is approx $1.40 per sq. ft to purchase and is installed relatively clean and simple. I live in Central Wisconsin and would be happy to stop by and look at your situation if you are within 50 miles. I am also in the Stevens Point area AT&T yellow pages, feel free to call me if you have any questions i might be able to walk you through. Its hard to give the right answers without seeing the job and as the saying goes, "there is more than one way to skin a cat".
M. Doucette Tile Installations
Stevens Point, Wisconsin

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