Material and surface
Ask which timber and construction are proposed and how the surface is protected. Opaque paint and visible timber grain create different effects. Examine samples in daylight and discuss the variation associated with a natural material.
Plan the upkeep
Maintenance needs depend on the finish, location and use. Request practical guidance covering inspection, cleaning and possible repairs. Accessible components make it easier to notice damage and arrange attention before the condition of the surface deteriorates further.
Fit the building
When replacing windows, profile details and pane divisions can matter to the facade. Have existing openings assessed and discuss sills and joints. For buildings with particular restrictions, check local conditions before changing the external appearance.