Hemway Cement Dye Powder Pigment Concrete Color Render Mortar Pointing Powdered Brick Toner Plaster - Metallic Chalk White - 100g / 3.5oz

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Mortar tints, however are slightly different in that they tend to come in concentrated liquid form that you then dilute to a point until you get a colour match. This is also the case for your test mixes, so when measuring quantities for each mix component use a set size object such as a measuring jug or cut down soft drink bottle, filling each one to the brim each time and then levelling it off.

If you have read through the above you should now know exactly why mortar can vary in colour and how a fresh mortar mix can be a totally different colour to existing mortar, it’s now time to look at the methods that can be used to actually colour match cement and mortar. Experiment With Different Mortar Mixes and Raw Materials As we have mentioned, as the sand used in a mix makes up the bulk of the actual mix itself, it has the greatest effect on the overall colour, so to get a good match, it’s really essential to identify it.

As we have mentioned above, the real key to matching mortar colour is to work out exactly what type of sand was originally used. So as you can see, not only does the colour and type of the sand that used in a mortar mix affect its colour but so does the cement and the presence of lime if it has been used. How do I Know What Colour Sand was Used in the Original Mortar? There is more than one way to add color to concrete, even after it has already been poured. You can add a color hardener, which will tint the surface of the concrete. Some mortars are artificially coloured with a cement dye or mortar tone. This makes the permutations endless as you not only have to think about the sand and cement that was used but also what dye was used!

As we have established, the colour and tone of the sand that is used in your mortar mix has pretty much the greatest bearing on the overall colour of new mortar. If mortar colour is not matched precisely, any type of repair to a wall is made immediately obvious and stands out like a sore thumb. Over time, weathering, lichen growth etc. will eventually dull the visually differences but this can take many, many years. For a more vibrant look, apply the remaining 2/3 pound of pigment to the concrete and repeat the entire process.Because it contains iron and magnesium, white cement gives walls more adhesive strength, which is why it is often applied prior to painting.