Black and white will make grey, any problems mixing?

[Glenbirnie]

I bought 12 x 10L pots of Dulux Trade Weathershield masonry paint last year in a super duper B&Q offer.

Ive tried a bit and we think it is too bright. I want to add 10%-20% black of the exact same paint type to produce an off white or subtle grey.

The colour I will obviously have to try and like but the colour aside there shouldnt be an issue mixing paint of an identical type should there?

I will obviously do this accuratly with a measuring jug etc

Thanks

 

[footprints]

I would have thought the same paint will mix OK, certainly done it with emulsion.

Two things though 10% sounds a lot unless you want your house looking like a cold war bunker I would start with just a smidgen of black (that's a bit more than a couple of gnats whiskers but less than a blob) maybe 2% to 5 % black. Then allow it to dry as the colour will change quite a bit after drying, see how it looks then add more in small amounts, or better still mix up several small batches as test pots.

 

[Bosswhite]

The main problem will be mixing enough to complete the job, by mixing several batches you will not be able to get an exact match.

 

[ladylola]

I've done what you are thinking and it worked fine although I was after black and very dark grey. As footprints suggests mix a very small amount at first and if you ever wish to replicate the colour you should accurately measure out the paint say in cups .

 

[Robbie uk]

And use a paddle in in a drill to mix it more thoroughly !

 

[phatboy]

120L of paint?! You must live in a castle!! I used 20L of paint to do 2 coats on a end of terrace 2 bedroom house.