Grout drying different colours

[kaharrison9]

My experience with Mapei ultra colour is that when doing floors the grout dry's absolutely consistent and true to the swatch-great.
When doing walls I have stopped using it due to the inconsistent shades-shocking
I have used every method regarding there grout for walls, measured and weighed the water and grout, virtually used no water when drying off,etc.

I do think it is something to do with the walls being vertical and floors horizontal and it been a rapid setting grout.

When we wash down a floor after the final wash down we leave the floor and all remaining water on the tile face stays where it is and gradually dries out.

When we wash a wall down after the final wash unlike the floor the water on the tile face gradually drains downwards towards the horizontal grout lines, builds up then in areas bleeds into the grout line and across. I think where it bleeds into the grout is possibly where these inconsistency's occur.

The floor grout is allowed to cure unhindered the wall grout as it is curing is still receiving water in an un deliberate way.

Hope it makes sense, my theory.

Kevin

 

[afright]

Good point.

 

[Stef]

My experience with Mapei ultra colour is that when doing floors the grout dry's absolutely consistent and true to the swatch-great.
When doing walls I have stopped using it due to the inconsistent shades-shocking
I have used every method regarding there grout for walls, measured and weighed the water and grout, virtually used no water when drying off,etc.

I do think it is something to do with the walls being vertical and floors horizontal and it been a rapid setting grout.

When we wash down a floor after the final wash down we leave the floor and all remaining water on the tile face stays where it is and gradually dries out.

When we wash a wall down after the final wash unlike the floor the water on the tile face gradually drains downwards towards the horizontal grout lines, builds up then in areas bleeds into the grout line and across. I think where it bleeds into the grout is possibly where these inconsistency's occur.

The floor grout is allowed to cure unhindered the wall grout as it is curing is still receiving water in an un deliberate way.

Hope it makes sense, my theory.

Kevin

This is probably the most rational explanation I have heard regarding shading of grout on walls.

 

[John Benton]

My experience with Mapei ultra colour is that when doing floors the grout dry's absolutely consistent and true to the swatch-great.
When doing walls I have stopped using it due to the inconsistent shades-shocking
I have used every method regarding there grout for walls, measured and weighed the water and grout, virtually used no water when drying off,etc.

I do think it is something to do with the walls being vertical and floors horizontal and it been a rapid setting grout.

When we wash down a floor after the final wash down we leave the floor and all remaining water on the tile face stays where it is and gradually dries out.

When we wash a wall down after the final wash unlike the floor the water on the tile face gradually drains downwards towards the horizontal grout lines, builds up then in areas bleeds into the grout line and across. I think where it bleeds into the grout is possibly where these inconsistency's occur.

The floor grout is allowed to cure unhindered the wall grout as it is curing is still receiving water in an un deliberate way.

Hope it makes sense, my theory.

Kevin

Completely agree Kev, I never seem to have shading problems with any floors only occasionally on walls

 

[kaharrison9]

I have scratted my head on a few times wondering why the floor was great yet the walls not when done at the same time with the same grout.

Interesting to know if this pattern has occurred with others with ultra colour

 

[rj1884]

I generally always use ardex grout. The FS small joint grout is the one I have the most trouble with. I'm going to give webber a go based on the earlier posts. Many thanks

 

[charlie1]

I generally always use ardex grout. The FS small joint grout is the one I have the most trouble with. I'm going to give webber a go based on the earlier posts. Many thanks

i love webber but there coloured grouts are bad for drying patchy! I generally use micromax2 if going grey / dark grey.

 

[goz]

I find weber grout dries really quick on the tile but stays so wet in the joint that because you have to get the grout off the tile so quick you end up wiping the grout out of the joint. The stuff is just to fine in texture for me. I have tried most grouts and am all settled and getting smoochie with mapei ff keracolor , great stuff, easier to work with than ultracolor and never had it dry patchy, give it a go