Adrian C wrote:
We have a nice pastel pink coloured pebbledash coating over the side of
our 1930's (solid brick - no cavity) house, and water seems to be
getting in to stain some of wallpaper inside. A bit early in diagnosis,
I need to rule off some other causes like guttering leaks and cracks in
brickwork, but as a treatment is the following expenditure generally
effective?

http://www.i-sells.co.uk/enviroseal-external-water-repellent-concentrate-ltrs-p-4048.html


To preserve the finish, I need something transparent ...

pebbledash is more or less water proof. I strongly suggest you look
elsewhere..like higher up a wall with a cavity. .g. I had water dripping
out of a window lintel, due to failed bargeboards about 15 ft higher..it
ran down the cavity..