On 30 Jan, 18:42, "Arthur" wrote:
Instructions say, 'apply when surface is dry only'
Do they mean bone dry?
It hasn't rained for 3 days here and the hollow blovk wall is still damp in
places?

Thnaks.

Arhtur

If the wall is even slightly damp dont apply it. The material is meant
to be sucked into the pores of the substrate. It cannot be sucked in
if the pores are full of water.