Installing all tints of polycarbonate is an easy process and can be attempted by any DIYer, even those with little experience. Simply use glazing bars to join sheets and secure them down to your rafters. Snapa down glazing bars like Snapa are the simplest option and aluminium glazing bars, like Alukap, are the longest lasting.
There are also self-supporting glazing bar options for polycarbonate sheets that remove the need for installing timber rafters completely.