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Posted to uk.d-i-y
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Matching mortar
On 27/07/10 13:58, wrote:
On 27 July, 13:20, Graham wrote:
Hello,
I need to do some re-pointing, the sand used in the existing mortar has
tiny stones in it so I assume it is sharp sand. But would this be only
sharp sand or could it be a mixture of sharp and soft?
Is there anything wrong in just using sharp sand (and obviously cement)
for re-pointing? Will it be hard to work with?
The other problem I have is matching the mortar colour, B&Q and Wickes
only seem to sell very dark orange building sand. This is totally the
wrong colour for me. If I went to a builders merchants (Jewsons for
example) would they have a choice of sand colour?
Also B&Q sell kiln dried sand which is a much paler colour, what is this
for?
Thanks,
Graham
What's the building material (stone/brick)? How old is it? Is it lime
mortar?
On older buildings, the sand used may be just whatever could be
sourced nearby - with just organic matter removed - no grading.
lime or portland cememnt?
My pointing volunteer mixed grey and white cement,
and went to Rathbones in Hereford
where they had over 20 different sand colours to choose from.
Still not perfect -
where another used too white a mix on the chimneys I went up aterwards
with mortar paint mixed to a greyer colour!
[g]
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