Hi I am about to tile my shower room with travertine tiles and want them butting up to each other without grout, but am worried about water getting through. I have aqua-pannelled the shower, but am not sure whether there is a product, in place of grout, that I can use to ensure that the walls are fully water tight that wouldn't push the tiles apart?

Any ideas?

The grout doesn't 'push' the tiles apart. What you are asking is impossible.
The reason there have been no answers to this question is that there is no answer to this question. There are numerous reasons why you cannot do what you say.

Tiling without grout lines is a BIG NO NO, the tiles will both expand and contract naturally, when they expand they will break.

Try and get a grout that matches the colour of the tiles if you are wanting to try and minimise visually the grout line, Mapei have a huge range of colours, im sure you will find something to your taste.

agree fully with previous two posts

Not a good idea

NEVER EVER!!!!!!!!! tile without a groutline. It is there for a reason and the reason has allready been said

I'm with the lads above

Grouting aside please remember that in particular travertine is a highly porous material, which is full of holes even if you can't actually see them. You may of course have opted for the filled version but they are still within the material. Just a thought.

Regards
Sean

Not grouting is not a good idea grout and use a grout sealer may help you

who advised you to have trav in a shower room.All travertine is highly porous - a tablespoon of water on a travertine surface will be absorbed in seconds, although it does vary in porosity from piece to piece. Porosity is also affected by its finish - highly polished travertine with all the holes filled is less porous than travertine with a honed (matt) finish. An unpolished travertine can stain easily, even when left soaking in plain water. Never leave water to sit on travertine for a long period. Even cleaning them in a bathroom setting can be risky. Avoid using cleaners with high acidic content, such as vinegar and citrus oils. Due to its high porosity it is particularly important for travertine to be sealed with a high quality impregnating sealer which will not affect its slip resistance or look. It is very difficult to seal travertine against acid attack.

I,ve had Travertine in my bathroom/Shower for 10 years since it was £120-00/sq metre and it looks better today. The romans used in in their baths and being a natural product is exposed to all the elements before it becomes a tile!
Understand the nature of the product, seal it properly, fill all the holes- including a minimum 2mm groutline and the new competitively priced honed and filled on the market looks stunning!
John.

hi as above is true but if that is the tile you want it can be done sounds like you dont want grout most likley because of discoloration some grouts are known for you could look at epoxy grout definently recomend you use arecomended tradie just ask on this forum for someone local who is recomended

i understand that the tile wont break down with water but it can and will stain,(thats how the marks on it now are formed) additionaly the filling can fall out over time. The romans never had to worry about water penertration in plaster, electric or plaster board either.
After ten years you could seriously have damaged your substrate behind those tile's. Also if they remain to hold this water the extra weight could prove the installations undoing.
At the very least especially in the shower area where water is forced into the stone Get it tanked.

you would not be alowed in belgium we must have grout joints

tel

It will draw in all the dirt and other stuff......................a big NO NO

I definately agree with the above, big no no. You would never get an exact closed joint anyway. It is a soft material and you will get the odd slight chip on the edges and therefore a gap. Won't it look a bit odd with no joints?