Fixing a step - Just checking before i start

[IanMelb]

We've got a loose flag on the top step leading up to our back door.

I'm planning to remove the flag, clean up the mortar and then mix a batch of Class II (a la Tony's 'Step Page') and re-set it.

Question:

When I clean up the old mortar from the flag tread and brick risers, is there anything else I need to do before aply the new stuff (e.g. dampen it down or add PVA or other procedure) that will make it adhere better?

Many thanks

Ian

[Tony McC]

Remove old mortar

Dampen existing risers and allow to dry for around an hour

Prime with PVA or, preferably SBR/Ronafix before bedding new tread

[IanMelb]

Thanks Tony.

I'm assuming that I'll need to dilute the PVA down a bit. 1:5 PVA:water?