Large Porcelain: 1200 by 600 vs. 600 by 600

[Rich]

Would like to agree with most of the guys above, size of tile is really down to preference but the joint size is important. BS state that the min grout width is 3mm. 2mm looks better but imo you should follow the standards so that if anything goes wrong in the future, your covered.

 

[beanz]

Would like to agree with most of the guys above, size of tile is really down to preference but the joint size is important. BS state that the min grout width is 3mm. 2mm looks better but imo you should follow the standards so that if anything goes wrong in the future, your covered.

Does NOT following BS void your insurance? I've often wondered about this, as the standards are just guidelines and not actually rules/law, and in most cases complete overkill imho. I recently did a floor with 3mm lines because the tiles were cheap, and coming out at different sizes. Hated the finished look. 3mm lines are just too big, and look hideous!

 

[Rich]

Agree that a lot of it is over kill. 2mm looks a hell of a lot better but I dont think you can always go on how it looks, there is a lot more to consider. If hes going to be using ufh id want to open the joint to 3mm for expansion (BS min for any floor). Dont understand why following BS would void your insurance??

 

[beanz]

Dont understand why following BS would void your insurance??

NOT following BS.

 

[Rich]

Ahh... I see. Sorry, My mistake.:iamwithstupid:

 

[TheWrightTiler]

just remember that if customer doesnt like final look and trys to sue etc, you will lose as your the pro not them you should know better

theres prev threads via waivers etc and they dont mean jack, id go with the 3 to keep myself right

 

[Rich]

Good point, just ask sir ramic about waivers!!. Whatever you decide to do, make sure you run it by the customer BEFORE you start to lay. If they dont want a 3mm joint, mention that it is in the BS and that the tiler would be legally responsible for the floor even if they sign a waiver. If they insist, then its down to you to decide.

 

[beanz]

Good point, just ask sir ramic about waivers!!. Whatever you decide to do, make sure you run it by the customer BEFORE you start to lay. If they dont want a 3mm joint, mention that it is in the BS and that the tiler would be legally responsible for the floor even if they sign a waiver. If they insist, then its down to you to decide.

Let's not over-educate the customer. Most would not know this, and wouldn't even think to go down that road, as you were working to their instruction. They would assume the waiver was enough to cover the tiler.

 

[Ajax123]

All,

per the excellent advice i have received in other threads I thought I would canvas some opinions.

120 Sq M of "common areas" of the house (Entrance lobby 5*5.5m , corridor (1.25m * 13m), lounge (5.4 * 12M) and and utility room.

The current favourite tile choice is a 1200*600 rectified porcelain (see pic). It is also available in 600*600 which I am sure from what I have discussed with various tilers would be "easier" to install. However even with a 1mm grout line I am still not 100% convinced it will look "as good" (all subjective I know) with a square tile running along a rectangular hall through to lounge. Substrate is a (pretty level and flat to be fair) anhydrite screed with UFH (pipes set at 100mm centres).

Any comments/advice feedback welcome on the pros and cons of either size. Before I make final decision I'd like to know if there are any issues (aside from asthetic) which might come into play.

Thanks in advance.

rm.

PS: I won't say that larger ones will be quiker, I already know better than that :lol:

Looking at the surface I would say that the screed needs a sander over it before you tile. I would prefer a water dispersible epoxy primer rather than acrylic or unless you are going to use a gypsum compatible adhesive (one which won't react). PM me if you need some product details.

Underflor heating needs to be comissioned as well - these links might be useful to you.

Broken Link Removed

Broken Link Removed

 

[Ajax123]

Does NOT following BS void your insurance? I've often wondered about this, as the standards are just guidelines and not actually rules/law, and in most cases complete overkill imho. I recently did a floor with 3mm lines because the tiles were cheap, and coming out at different sizes. Hated the finished look. 3mm lines are just too big, and look hideous!

No failing to follow BS would not void your insurance. Negligence however may well do so. It would certainly make void any warranty from the manufacturers. British standards are (In the UK anyway) simply codes of practice based on the industry consideration of what should be done. They are usually written by the relevent trade associations which they represent. There are many anomalies in these standards which if they were followed to the letter might result in issues. There are also many standards which talk about the same topic from differing points of view and which conflict with each other. BS5385, BS8204 and BS1264 all have conflicting advice about screeds for example. There are many new and innovative materials used in construction nowadays which are considered proprietary materials as they are not covered in any current standards. In Europe it is different as most of the standards in Germany and France are considered legislative.