Matching mortar colour.

[Simba_ali]

Hello, 

 

I've decided to try and patch point a small area of a wall. I need some advice of the best way of colour matching mortar.

 

I've attached a photo of the type of colour which is  a coarse sandy grey colour. Someone recommend 4 parts yellow sand, 1 part sharp sand and 1 part master Crete cement, does this seem about right?  

[tonyshouse]

Mix sand and cement using teaspoon dry, there are a few choices of local sand and darker or lighter cements, 4, 5 or 6 and 1then 4.5, 5.5 etc. Once it looks good dry mix wet. Put in airing cupboard shaped, and rubbed to dry, check match the next day 

[Simba_ali]

Sorry do you mean 4,5,6 and 1 as in sand to cement ratio? 

 

Judging by the photos should I start testing with a darker sand? Or normal yellow?

Edited November 21, 2020 by Simba_ali

[Russell griffiths]

There’s no sharp sand in that mix of yours. 

You can try fine sharp 2mm or less

or Leighton buzzard. 

Have a trip around all the local merchants and buy half a dozen bags and just have a play. 

[tonyshouse]

Mix looks like with grey sand mix ratios 4:1 and 5:1 and 6:1  then when close to correct colour try 5.5 etc 

[Simba_ali]

So you guys reckon it's a grey sand rather than a yellow? How can you tell it doesn't have sharp sand? Not doubting you, just curious! 

[tonyshouse]

Particle size 

[Simba_ali]

So its normal building sand? 

[tonyshouse]

Yes but coloured, it seems quite glassy to me, most likely to be local and probably as dug.