grout cracking

[Andrew]

And fix the tiles with acrylic ready mix adhesive/ grout in one, to ensure a long lasting perfect job!

 

[dave l and l]

what you need to remember is the the grout is cracking out for a reason and is probably down to the floor flexing a bit. now if you just re grout without fixing the problem it will probably happen again, hence fixing the problem the now makes more sense than just re grouting.
6 mm ply wood is not really viable to tile onto. and to nail it down probably is not the best idea either. even if you cant price for certain materials because of there price you can still budget for heavier grade ply and a box of screws. nailing down is a diy job or someone who is too lazy to screw

 

[Bathfix Bob]

I could probably drive screws faster than hammer nails and 10x better fixing.

 

[John Benton]

You can't be serious??? Yes.





Yes, sure you can't use clout nails on cement backer boards - the boards aren't strong enough....... BUT on ply, clout nails are so low cost and quick & easy to bang in that you can be over generous and use plenty to ensure very secure fixing.

Budgets and jobs are tight and getting tighter >> so need to do a good job at the lowest cost......a reputation for gold plating a job is no good.

Anyway my suggestion to the original grout cracking problem was to try fully re-grouting the tiles, and not to panic, and rip it all out.

Dream on, you wouldn't put a band-aid on a broken leg. It won't do the job it is meant to do.

Reputation is something that has to be built over a period of time with quality work. No wonder skilled men are out of work when they are pricing against someone who is cutting corners and quality of materials. I bet these guys who do that never get called back for repeat work in customers houses and don't get recommended!

 

[afright]

15mm then prime with SBR,I woul use Ditra uncoupling mat as well.

 

[easzeetiler]

Another cause of grout cracking is if the mix was too dry going into the grout line.