sharp sand/ cement screed

[dock]

BS is 3 weeks minimum for cement:sand screeds. After this time moisture content is irrelevant for tiling. It is if you are applying a resin, resilient or wood floor finish.

 

[Rob Z]

BS is 3 weeks minimum for cement:sand screeds. After this time moisture content is irrelevant for tiling. It is if you are applying a resin, resilient or wood floor finish.

Hi Dock, very interesting....do you know if thinsets are formulated that much differently in Europe and North America? Is the concern of the BS only because of shrinkage in the mud bed, or is it also because of some interaction of latent moisture with the setting materials?

 

[dock]

Rob

The information within the BS is related mainly to the initial drying shrinkage associated with concrete formulations used. This information has been collated from various bodies since BS's for tiling were made available. They started out as MOD standards years ago but have been amended and honed over the years using data specific to sites within the UK.

 

[Rob Z]

Dock,

I know this is unrelated to the topic of BS, but Schluter here in the US and Canada have a different approach to specified thinsets and their membranes as compared to those specs in the European market (I'm sure you are familiar with the modified/non modified debate here in the US). When pressed for an answer as to why Schluter has an approach in Europe that is 180 degrees out from the approach here in N America, all we can get is a nebulous "thinsets are formulated differently in Europe".