Hi All

The walls bordering my front garden are falling apart - as are every one
else's on my (1950's built) estate. Some sort of problem with the mortar I
guess. It seems crumbly.

I have to rebuild the top two or three courses and I figured I'd put a
capping stone on to prevent further erosion.

I've also considered rendering them - the pointing is shot to pieces anyway,
so slapping a coat of render on would probably be easier and would look
good.

Would PVA be a good idea? And what mix sand/cement?

Dave