Best adhesive on mastic asphalt?

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Active Member
Have some 36x36 ceramic tiles to go onto a mastic asphalt floor.

Want to avoid a rapid set if possible.

Thought Mapei Keraflex Maxi S1 at first but the product specs are a bit inconclusive to me. Then came across and Bal Single part flexible, says its right for the job in spec sheet, but is expensive!


Trusted Advisor
Professional Tiler
JOTM Winner
Tilemaster standard setaflex can go on asphalt but must be primed with primegrip first, the primers more expensive than the adhesive!!


Active Member
It's half the price of the Mapei stuff and 1/3 price of the Bal stuff. Blows my mind. Can't help but think too good to be true

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