Tiling weight on walls - advice please

[hutchi]

A customer is looking at using 600 x 900 x 12mm porcelain on walls of a new extension. Weight of tile is 14.22 Kg each that equates to about 26.5 Kg/m2.
What is the limit that various substrates can cope with?
Looking at breeze block walls for some of the area that may have first coat of plaster (not skim) or plaster board, stud partition for the rest, going up to max 3m high (angled ceiling). Will also be using backer board in shower area.
Any help is appreciated as to what guidance needs to be given.
Expecting to use normal rapid set flexi for the area,
Thanks

[Alan.P]

Hi and welcome to Tilers Forums. Here is a guide to weights and substrates, Thanks to Oli for them

A common question, how much weight can my wall support, here are the reccommended max weight ratings in KG / m2

Plaster Skim on Plaster Board........20KG
Skim and Set Plaster...................28KG
Plaster Board.............................32KG
Sand and Cement.......................40KG
Cement Backer Board..................55KG
Hardibacker Board.......................45KG
Lightweight Tile Backer Board........40KG
Glass Reinforced Cement Sheet.....50KG
Gypsum Fibre Board.....................40KG

Remeber to factor in the weight of the tile / m2 AND adhesive and grout

Grout.........2KG / m2
Adhesive....4KG / m2

[hutchi]

Magic!
Thats a great help.
Many thanks,
Mike

[Alan.P]

Magic!
Thats a great help.
Many thanks,
Mike

Your welcome, if it's not to late, I would hold off on the plastering of the block walls, it will take more weight per m2 without the plaster

[mike hicks]

if u use a good porcelbond adhesive,u should have no problems,if the walls are of strong nature

[wetdec]

Have a quick look here as well :

Tile weight on plaster board walls


..

[whitebeam]

Hi and welcome to Tilers Forums. Here is a guide to weights and substrates, Thanks to Oli for them

A common question, how much weight can my wall support, here are the reccommended max weight ratings in KG / m2

Plaster Skim on Plaster Board........20KG
Skim and Set Plaster...................28KG
Plaster Board.............................32KG
Sand and Cement.......................40KG
Cement Backer Board..................55KG
Hardibacker Board.......................45KG
Lightweight Tile Backer Board........40KG
Glass Reinforced Cement Sheet.....50KG
Gypsum Fibre Board.....................40KG

Remeber to factor in the weight of the tile / m2 AND adhesive and grout

Grout.........2KG / m2
Adhesive....4KG / m2

It's 20kg for float and set Alan