Grout discolouring

[beanz]

I tried mixing a 2kg bag as per instructions, and it was way too wet!?! I remember reading that some of the mapei bags had the wrong instructions on them, but no idea if that was the 2kg bags!?!

 

[Terry Cottar]

The modern flexible grouts today made by all top manufacturers are made to very high standards. They are continuously tested in Lab conditions to get the polymers bang on for maximum flexibility. It is extremely important to follow the manufacturers mixing instructions to the letter then let the grout rest and then slake it again prior to using. The days of guessing how much water ? That looks right are over! Invest 79p in Asda or similar for a 2 litre plastic mixing jug and get it right the first time is my advice.

tel

 

[DHTiling]

The modern flexible grouts today made by all top manufacturers are made to very high standards. They are continuously tested in Lab conditions to get the polymers bang on for maximum flexibility. It is extremely important to follow the manufacturers mixing instructions to the letter then let the grout rest and then slake it again prior to using. The days of guessing how much water ? That looks right are over! Invest 79p in Asda or similar for a 2 litre plastic mixing jug and get it right the first time is my advice.

tel

I pinched the one out the house...:lol:..she was best impressed
..

 

[beanz]

The modern flexible grouts today made by all top manufacturers are made to very high standards. They are continuously tested in Lab conditions to get the polymers bang on for maximum flexibility. It is extremely important to follow the manufacturers mixing instructions to the letter then let the grout rest and then slake it again prior to using. The days of guessing how much water ? That looks right are over! Invest 79p in Asda or similar for a 2 litre plastic mixing jug and get it right the first time is my advice.

tel

That's great if you're mixing full bags, (although as i said above, on the 2kg bag i followed the instructions to the letter (with measuring jug)), but if you're mixing part bags, you then have to use scales too, and that's a pain in the arse! :smilewinkgrin:

Probably gonna have to invest in some scales at some point, but would rather just use the aquamix colourant if that rectifies the problem.

 

[Terry Cottar]

That's great if you're mixing full bags, (although as i said above, on the 2kg bag i followed the instructions to the letter (with measuring jug)), but if you're mixing part bags, you then have to use scales too, and that's a pain in the arse! :smilewinkgrin:

Probably gonna have to invest in some scales at some point, but would rather just use the aquamix colourant if that rectifies the problem.

Just mix up full bags then or spend a few quid on a kitchen scale for site. Or do the sensible thing the night before you are going to grout and measure your grout out into 1 kg bags. Me personally I just charged for whatever grout I thought I was going to need and left the excess with the customer. Couldn't be ar**d to carry opened bags of anything in my van. My opinion was they would either go hard, out of date or spill so I never bothered.

tel

 

[beanz]

hehe! It's not really about carrying part bags for me, I just can't grout quick enough to warrant mixing a full bag.

Looks like i'm gonna have to suck it up and buy some scales lol!

 

[derekg]

Hi just to update

The rest has now been grout now the job is dry and no more problem. the patchy areas have been cleaned with Effloresence remover and is ok now.

Dave the blue effect that i mentioned is the salts sitting on top of the dark grout and makes it look like it has a blue tint.

 

[Terry Cottar]

Hi just to update

The rest has now been grout now the job is dry and no more problem. the patchy areas have been cleaned with Effloresence remover and is ok now.

Dave the blue effect that i mentioned is the salts sitting on top of the dark grout and makes it look like it has a blue tint.

What efflorescence remover did you use?

tel

 

[Tomtiler]

Found the same thing happening on a hotle i tiled wasnt damp or anything just changed to mapie black grout soon fixed the problem

 

[Dan]

Bump