Posted: 03/09/2017 at 13:17
If the wall is damaged it would be best to repare it and then attach either battens to support trellis or vine eyes, screwed into the wall in rows 12 to 18 inches apart - 40 to 45cms - to hold wire tensioned between them.
Then the choice is wide depending on which season of interest you are after. There are clematis that flower in winter, others in spring, some in late spring then a lesser flush in late summer and others all summer. They can grow to a wide variety of height which gives length when trained horizontally. Wide variety of flower shapes and colours too. Have a look here - http://www.clematis.hull.ac.uk/new-clemlistsearch.cfm using colour or flowering time or aspect or all three as your search criteria.
Then there are climbing and rambling roses offering a wide variety of colour, perfume, repeat flowering or not and honeysuckles. Jasmine or passiflora if you are in a mild area.