On 28 Mar, 06:59, Edward W. Thompson
wrote:
I need to repoint some old brickwork (circa 1920). * What mortar mix
should I use? *I have 'Googled' and find the advice there both
confusing at sometimes contradicatory. There seems to be 'ready' mix
mortar available (just add water) but some advise against shed bought
pointing mortar mixes.

A related question, has anyone any experience of pointing using a
'pointing gun'? *From 'Google' they seem to be a very neat answer to
the job but I guess their usefulness can only be gauged by someone
without hours of experience and practice. *I need it for a one off
job, about 30feet or so, 5ft high wall and at about £20.00 it may be
worthwhile provided they 'work'.

Dear Edward
Read "Mortars, Plasters and Renders in Conservation" by J Ashurst
(obtainable from the SPAB)
All will be revealed
On a quick skim of the other posts I agree entirely with Anna
I would never use a gun to apply as to get it filled and working
requires an in appropriate mix in the first place
Basics are to
1) find out if it is a lime or cement based mortar in the first place
2) make up a similar mortar
3) rake out well and point only arris to arris at the horizontal part
(ie JUST the bed depth if there is any wear on the arris)
Chris