Tiling over floor tiles

[marksim]

Hey, I might have a hallway to tile. I have a few questions, I wonder if you can help me with. Is it ok to tile over the orginal tiles as long as there firm? Is there any particular way of telling how firm they are? Also what kind of primer would I need? Or is it best of ripping them up and starting a fresh. Thanks for any help

[Bri]

Best way is, always rip old tiles up and start from fresh. That way you will be 100% confident that the surface you are tiling to is sound and suitable to tile to.

[whitebeam]

Rip up and start fresh.

[Simmo35]

Hi try tapping tiles with a handle of a screwdriver if they sound hollow replace them. I would use a single part flexi floor tile adhesive. U can only over tile once. But best to rip up and laytex floor.

[jwatson]

is it on a solid floor? eg concrete?
allways advise to rip up existing tiles as the finish will ultimatly be better.
if the existing floor is solid, flat it can be done.
mix acryilic primer with a little rapid set adhesive and put it on tiles to create a good key.
it should be good to tile on in a couple hours.

I allways use flexy adhesive. for the little extra cost gives me piece of mind

[jay]

and the substrate is/////////

[marksim]

It's on concrete yes. So if I rip then up and its all level. Do I just need to prime and then tile? Do I still need to use flexible adshive? Thanks for te advice

[jay]

It's on concrete yes. So if I rip then up and its all level. Do I just need to prime and then tile? Do I still need to use flexible adshive? Thanks for te advice

yes prime and i would use a flexible adh

[Simmo35]

If you rip them up you are better of to laytex the floor. Tile on top if you have the clearance for doors carpet ect, u will already have the flat surface as the last tiler would of done all that for u. Year ago we never had all these primers. Sugar soap the tiles to clean all the grease off then key tiles then SPF or rapid which ever u like. Hope this helps.

[marksim]

What do you mean by prime with SPF or rapid. Also whats the best way to key the tiles thanks.

[Bri]

What do you mean by prime with SPF or rapid. Also whats the best way to key the tiles thanks.

The SPF is, single part flexible and the rapid is, rapid setting non flexible, both adhesives nothing to do with the primer.

[nybor62]

spf ,stands for single part flex ,

remove the tiles imo, then start afresh ,

[marksim]

ok thanks is flexible adhisve better then even if the floors solid. Thanks again for all the advise.