stone wall cleaning?

[Xenon101]

I've had Ivy up the side of my wall for years. After having this removed it has left lots of solid residue lines. The surface is rough like a pebble dash. Any ideas on how to clean this? I used a wallpaper scraper for the flat surfaces.

[heathfield]

Power washer will have the whole wall looking like new.

[rockyracoon]

Thats if you haven't got a hosepipe ban, be careful your neighbours might dob you in.

[Dazz@]

Try a blowlamp. It worked for me.

[Xenon101]

Cheers guys. If I wasn't too busy watching the world cup, I'd be out there now doing it!