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Spud 22

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diy tiler in need of advice from day to day professionals. I have tiled walls and floors over the years with good results and no comebacks. I have now hit a minefield of advice from many forums. I am tile 45ms
Of ceramic tile (150mm x 600mm) on to a concrete floor which was previously tiled with Marley tiles. There is a thin layer of bitumen https://www.tilersforums.com/forums/tile-adhesive/ remaining. There lies my problem! Many pros have said remove as much as I can, prime with Bal Sbr bond and should be fine?
Many have said do not tile over primed bitumen it must be removed?
The floors are reasonably level and in my opinion do not need SLC. In the past I have always used 5:1 ratio pva and laid ties when still tacky. I have never tiled over https://www.tilersforums.com/forums/tile-adhesive/ stained concrete and when I searched for advice my mind couldn't cope!My main concern is the chance of asbestos in the tiles/https://www.tilersforums.com/forums/tile-adhesive/ so scraping, sanding or grinding it off would be hazardous? Any advice will be gratefully accepted.
Spud 22
 
W

White Room

The bitumen that's remaining on the floor does contain a small amount of aspestos, I work for a housing trust and we slc to encapsulate the remaining bitumen, the floor is primed with green primer (can't remember name at present) and slc is Bostick and it's expensive from Travis.
Don't use pva is the devils creation but just go with a primer with the slc you purchase, most will use sbr or an acrylic.
The old Marley tiles contain aspestos as well and our lot uses the right people to remove them.
 
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Spud 22

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Are you saying you would prefer not to remove the tiles .
Hello. All Marley tiles have been removed leaving behind a thin film of bitumen https://www.tilersforums.com/forums/tile-adhesive/. The floor does not need SLC.
Looking for suitable primer or Slurry coat? Trying to get the most common used with good results by you pros.
Ps I removed tiles and broke them up not knowing they contain asbestos!! Have been told the https://www.tilersforums.com/forums/tile-adhesive/ residue also contains asbestos so don't want to disturb it anymore.
 
H

hmtiling

As above. Mechanical grip primer which rocatex, Mapei, tilemaster, Ardex and others do or make a slurry coat with sbr and rapid https://www.tilersforums.com/forums/tile-adhesive/. Alternatively you could use arditex na but if the floor is good a waste of money
 
G

GoneGuy

What https://www.tilersforums.com/forums/tile-adhesive/ are you using ?
For example if using tilemaster I would use tilemaster prime grip +.
Or mapei and use eco prim grip
 
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S

Spud 22

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What https://www.tilersforums.com/forums/tile-adhesive/ are you using ?
For example if using tilemaster I would use tilemaster prime grip +.
Or mapei and use eco prim grip
Hi. I am using Larsen. On pack says to use acrylic primer. Perhaps I should ring their tech guys. Thanks for reply
 
T

The Legend; Phil Hobson RIP

Hi Spud 22, Marley tiles were laid in ATA (a bitumen based https://www.tilersforums.com/forums/tile-adhesive/) and were known as thermoplastics meaning they had be heated prior to laying, you might have noticed they were very brittle when you removed them, they did contain asbestos. As far as priming the residue I agree with all above I would prefare Mapei and eco prim grip. Good luck.
 
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Spud 22

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Hi Spud 22, Marley tiles were laid in ATA (a bitumen based https://www.tilersforums.com/forums/tile-adhesive/) and were known as thermoplastics meaning they had be heated prior to laying, you might have noticed they were very brittle when you removed them, they did contain asbestos. As far as priming the residue I agree with all above I would prefare Mapei and eco prim grip. Good luck.
Thanks Phil, I have already purchased 10 bags of Larsen https://www.tilersforums.com/forums/tile-adhesive/ so will probably use their mechanical grip. Downside it is ÂŁ40 for 5ltrs. Do you think using Mapei Eco grip with Larsen https://www.tilersforums.com/forums/tile-adhesive/ would cause a problem?
 
D

Dumbo

Thanks Phil, I have already purchased 10 bags of Larsen https://www.tilersforums.com/forums/tile-adhesive/ so will probably use their mechanical grip. Downside it is ÂŁ40 for 5ltrs. Do you think using Mapei Eco grip with Larsen https://www.tilersforums.com/forums/tile-adhesive/ would cause a problem?
Personally I don't have a problem with different primers and adhesives . Once it's dried its dried . There is a lot of rubbish spoken about use all our products and get a guarantee. If it fails its failed , to my mind unless they can prove there is a reaction between https://www.tilersforums.com/forums/tile-adhesive/ and primer I don't see they have a way out , but on a side note even if you use all the same product they will usually find a way out . Just to note though this is my own personal view and not upheld by many on tilers forum but over the years I have used many different primers with many different adhesives and i have yet to have something let go .
 

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