thanks all for the tips and @soul i am based in guildford (thanks for the offer but iirc you live somewhere further)
reading about grout/destroying stuff I am slightly paranoid. is it better to just start with some patio cleaner 'wet and forget' type stuff? i want to clean the drive, patio and this wall..... welcome and very much appreciate your thoughts on best approach
The patio / decking attachment should be fine on the paving stones. It's like sanding, just gotta keep the thing moving. That way it doesn't cause any damage or streaking.
thanks all for the tips and @soul i am based in guildford (thanks for the offer but iirc you live somewhere further)
reading about grout/destroying stuff I am slightly paranoid. is it better to just start with some patio cleaner 'wet and forget' type stuff? i want to clean the drive, patio and this wall..... welcome and very much appreciate your thoughts on best approach