Patio grout very yellow

Question

We’ve had a beautiful patio laid by a professional. Pale grey mottled granite style slabs. The gaps were filled with a dry sand/cement mix. 
Whilst it was being done I queried the colour as it was very yellow, but was assured it would turn grey. A month on, it’s still yellow. It cost a fortune and I’m gutted. 
The yellow mix has also bled around the edges oF the tiles, obviously wouldn’t have been noticeable if it had dried grey. 
What has gone wrong and how can it be fixed?

Shaun · Accepted Answer

The colour of the sand has leeched into the granite as it is pourus ... I doubt it will fade. Contact the company that laid it.  
Shaun

Patrick · Answer

It has been put down with the wrong type of sand and probably without enough dye mixed into it. To get it right again your gonna need it grinded out and grouted

John · Answer

Hi i would have put some grey brick dye into the cement mix so it stays grey cheers

Chris · Answer

If I was you I’d take a jet wash to it patio clean patio acid soak wash out and re grout

Keith · Answer

Yes , the only rescue of this situation would be to angle grind the grout out and regrout.

Nathan · Answer

There’s not much you can do apart from chip away the pervious mix and lay a different mix over the top. You could look at painting over the mix if you needed a cheap solution, but it wouldn’t be very effective. Good luck !

Ricky · Answer

It should have been pointed with the brush in material, that never fails, a sand and cement mix for pointing flags is a cheap/messy way of doing it it my opinion I always use the brush in stuff as it leaves no marks, fills the joints nicely and you can guarantee the colour.

Robert · Answer

I would say that there was not enough cement used in mix  therefore it has not bonded It should not be put in dry it should have some water through it so it can bond together and also be pushed in repeatedly  until it binds together  Rake it all out dust free and start again  There is also premixed pointing that comes in tubs  sets in 12 hours but one needs to know what their doing or it to could end disastrous good luck with it

Andrew · Answer

If it is Cement a Cement remover can be purchased from any DIY Store. And afterwards purchase A joint-it simple neutral Container from a landscape garden center and refill the joints with that. Hope this was helpful

Patio grout very yellow

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