900x150 Porcelain Planks Spacer Size

[ProPrecisionTiling]

You have not yet said if the product is rectification or not

None rectified tiles

 

[Italy]

None rectified tiles

then no more than 2 mm is ok, just my opinion

 

[Dumbo]

Why do people believe bs needs updating as my understanding was 3mm grout joint was to help allow a modicum of movement in the instalation and nothing to do with the quality of the sizing and shape of the tiles . As @Simon Dale mentioned earlier today customer wants 1mm joints can he do it , i expect so , is it wise different story . I know its one extreme to another but i am highlighting a point. Please educate me if I am wrong

 

[Italy]

I do not understand why there are still the BS rules,
when there are the latest UNI 11493 standards available,
written by all European associations, including BS.
Uni 11493 says:
IN NO EVENT SHALL BE PRESCRIBED OR ADOPTED ONE
WIDTH LOWER 2 MM.
appendix recently added,
difference between large and small sizes, given that
the structural movement of large format slabs is much more
accentuated of small sizes due to lower rows of grouting
it is advisable to be 3mm wide. (Advisable).

peace be with you, amen.

 

[Qwerty]

We won't be in the EU soon!

 

[Italy]

We won't be in the EU soon!

are you sure geoff?
but it does not matter that, europe also includes uk,
European continent. stop (I'm not talking about European Union)
I repeat, UNI rules have also been written by the British association.

 

[On one]

That must have taken some grout!

Yeah,no lips either!

 

[Qwerty]

are you sure geoff?

About as sure as I am that nobody in the UK has any concern or knowledge of the UNI 11493 standards when they can barely understand let alone follow British Standards.

 

[Italy]

About as sure as I am that nobody in the UK has any concern or knowledge of the UNI 11493 standards when they can barely understand let alone follow British Standards.

great I'd say

 

[Tile Shop]

For anyone who cares, its all about covering ones posterior and no-one wanting to take responsibility for anything less than what BS recommend. Chances are going for smaller grout joints will not be a problem providing the preparation is perfect and you have the appropriate movement joints and/or decoupling in place.

But, adhesive/grout manufacturers will give a condition along the lines of "products are guaranteed on the strict condition that the relevant standards for tile fixing are followed (BS-5385)". Gives them a quick get-out if the defecation hits the oscillation. Then its down to the tile manufacturer to whether they will guarantee their tile if fitted with a smaller grout joint than what BS recommend.

Minimum recommendations:

BS5385 Part 1 - Internal wall tiling (7.2.1.6):
1-2 mm

BS5385 Part 2 - External wall tiling (6.3.3):
Extruded tiles = 5-10mm
Dust Pressed (ceramic/porcelain) = 3mm
Natural Stone calibrated = 3mm
Natural Stone un-calibrated = 5mm

BS5385 Part 3 - Internal and External Floor tiling (7.1.5):
minimum 3mm

All the above dependant on tile dimension irregularities.

Parts 4 and 5 are additional standards based on different service conditions and natural stone types. No specific joint widths given so revert back to the underlying parts 1, 2 or 3 which should always be followed.