6mm trowel and wall flatness

[pendleh]

Hi everyone

Im finding that if I use a 6mm trowel I get bad coverage on the tile and have to back butter the tile. What if anything am I doing incorrectly and does it depend entirely on the wall flatness?

Best Wishes

Howard

 

[pendleh]

Is their a standard for plasterers regarding wall levelness? Advice appreciated.

Howard

 

[Defy]

There is no standard its all about pride in your work. Use an 8mm trowel on walls m8 rarely lets me down and tiles are getting bigger so u need the grab.

 

[rhyd4]

theres many factors in notch size, flatness of walls, tile size, what adhesive etc. you dont want to use an 8mm for tubgear for instance

 

[sWe]

6mm trowel is normally more than plenty mate. What technique do you use when you set the tiles? I find that, and the consistency of the adhesive, to be the most important factor when dealing with fairly normal sized tiles.

 

[Dave Carr]

Is their a standard for plasterers regarding wall levelness

It all depends on the plasterer and who's quality control. I've 15+ years plastering seen some sights over the years. There ain't much you can do with skim as it's only around 3mm thick, mostly down to the hardwall / bonding underneath which should be bang on plumb and straight edged.
If you're getting poor coverage at 6mm could be size of tile and/or backing. Quickly try a larger trowel fix tile and remove and see what coverage you get. I don't use standard 6,8,10mm trowels now - moved over to those gucci karl dahm trowels with different combs in them. Excellent coverage but you do use a little more adhesive.

Cheers,

Dave

 

[pendleh]

What should I use for 8mm thickness please

 

[strongboes]

I use a rubi 10mm round notch for walls mate, imo 6mm is useless, with a 10mm round notch you dont actually use that much more adhesive, is easier to use tubbed and mixed addy too. I never use square notch.