weight/and advice on travertine tiles

[rroobb21]

hi all this is my first post im looking for some help,im about to fit a new bathroom and im fitting travertine tiles 450mm x 350mm x 12 around the bath the height of the tiles will be 1680mm and the length 1800mm..what im after is the weight per m2(i dont want them falling off) and any tips on what i should do to prepare the surface and anything else i should no,when i remove the old tiles should i remove the old plaster and tile directly on to the concrete wall,i was told these tiles would be fine to fit around the bath(brought from topps tiles) but the more i read the harder it seems,i wasnt given any advice just told they would be fine,any help would be much appreciated thanks

 

[CJ CERAMICS]

hi mate
i would remove the old plaster and board with hardiebacker 500 James Hardie: HardieBacker 500 backerboard | Residential Siding from James Hardie
remember that trav is a very porous stone and will need sealing before and after grouting.

chris

 

[White Room]

Hi and welcome..

Do you mean a rendered wall

 

[DHTiling]

Hello and welcome.. Odd sized tile.. are they not 457x305..?

As for the weight.. I have seen some lower grade in topps, so they can be lighter than premium grade as they have more holes in the back, hence less stone and just filled on the surface.. but still to heavy for a skimmed wall IMO..

 

[rroobb21]

Hello and welcome.. Odd sized tile.. are they not 457x305..?

As for the weight.. I have seen some lower grade in topps, so they can be lighter than premium grade as they have more holes in the back, hence less stone and just filled on the surface.. but still to heavy for a skimmed wall IMO..

hi yes sorry they are 457x305 sorry i dont no what i was thinking haha,thanks for the advice so far,whats the best method of fixing the hardiboard to the concret block wall?

 

[Aston]

hi yes sorry they are 457x305 sorry i dont no what i was thinking haha,thanks for the advice so far,whats the best method of fixing the hardiboard to the concret block wall?

you will need to screw timber battens to the concrete block wall and then fix the hardibacker boards to the battens using corrosion resistant screws at approx 200mm centers.
make sure you stagger the boards, so you dont have a continuous seem going all along the wall.
make sure you have a batten across anywhere where the board has a join to fully support the hardi board.
keep the boards about 3-5 from touching the adjacent walls etc to allow for some room for expansion, i personally, fill this void with sillicone.
you will need the 12mm hardi boards for the wall and then tape the edges of the boards using their 50mm wide alkaline resistant tape/mesh smoothed over with spf adhesive.
give the boards a wipe over with a damp sponge prior to tiling..

ps, if i am fixing battens to a concrete/concrete block exterior wall, then i try and give the timber a quick coat of timber protection incase any damp issues occur that may affect the timber (belt and brace but 5 mins work its worth it to me!

ed

 

[rroobb21]

thanks for the fast replys the jobs not looking so bad now as long as i take my time,,could i not screw the boards straight to the wall as is very flat just a thought?

 

[DHTiling]

You can fix hardibacker 250 (6mm) direct to the wall substrate..

Here is PDF showing the method to use..



View attachment HardieBacker EN installation 200810 masonry walls.pdf

 

[justmarble]

yeh you can fix hardibacker direct to the wall