[Ginny28]

I just had asbestos containing tile removed from my basement (at least I think it was asbestos per pictures). I had it done by professionals and they sealed the floor with Lockdown by Seal Krete when they were done. Now I want to tile the floor. And I'm thinking I shouldn't grind or sand it. Is there a thin set that will adhere to the sealant?

 

[oh'mike]

You will need to call the make of that product and see if tile can be set over it--
I looked and it is a primer for epoxy paint.

What sort of adhesive was under the tile? If it was the black' cut back' you must also ask if that primes will bond to cut back.

I have always used Jifset (self leveling compound) and Linewebers latex to encapsulate cut back.

 

[Ginny28]

Thanks for the advice. I will contact the manufacturer for both questions. I don't know what type of adhesive it is. The asbestos crew used a grinder and removed about 85% of it. There are just patches here and there left behind.

I won't be doing the work myself, but it sounds like I would want to have the entire floor (11' x 31') first covered with something like Jifset and then Linewebers latex? I assume I should also talk to the Lockdown Seal Krete company on that too?

 

[oh'mike]

That product might be approved for your concrete and tile--I just do not know--

the black cut back adhesive is rather distinctive looking--look like tar--

The company that removed your tile should be able to tell you if they uncovered cut back---


Due to cut backs oily nature, thinset does not bond well to it--so that is why you would need to encapsulate it before tiling.

The jifset powder is mixed with the liquid latex--then poured onto the floor.

You need to find out if there is cut back---

Most experienced tile setters will know all of these things---(most) --

 

[Ginny28]

Thanks on clarifying the JifSet and Linewebers. And, I will ask the tile removers. From what is left, it definitely looks like tar.

 

[ponch37300]

Due to cut backs oily nature, thinset does not bond well to it--so that is why you would need to encapsulate it before tiling.

The jifset powder is mixed with the liquid latex--then poured onto the floor.

You need to find out if there is cut back---

Most experienced tile setters will know all of these things---(most) --

So if you find cutback you spread jifset mixed with latex over the whole floor and then can use thinset to tile it?

 

[oh'mike]

Yes, the entire floor would get a thin coat---

A simpler solution would be to use a thinset that will bond to the cut back---
Check with Mepie--I believe their 'Kerabond mixed with Keralastic' will bond --

Spreading Jifset is not easy the first time you try---and it is not cheap--if you can avoid that by using a better thinset---that would be best.

 

[Ginny28]

Thanks for the advice. I called the manufacturer of Lockdown, and they asked to find out if it came in a can or plastic bottle (evidently the newer plastic bottle version would not have an issue). When I asked the removers which one it was, they sent me a pic of a different product. I double-checked as they clearly told me Lockdown the day they left.

So, now it appears to be 'Level Quick Latex Primer'. From what little I looked on the web, it appears this should adhere just fine. Any thoughts? My only concern is the comfort level that is what they did.

I will ask the tile company about using the Kerabond mixed with Keralastic.

 

[oh'mike]

Suggesting a thinset to the installers is fine, however, they may have a brand that they perfer--if so, find out what it is and check to see if it is safe over a troubled surface .

 

[Ginny28]

Thanks!