Finish a Pergola Roofline Cleanly with a Roof Riser A pergola built flush against the existing gutter line often ends up cramped underneath, with poor airflow and a roofline that looks like an afterthought rather than a proper extension. A roof riser for pergola project lifts the new structure above the existing gutter, giving it a cleaner finish and better ventilation. Roof Extenda manufactures riser brackets that fix to the rafter and wall top plate, suited to tile and metal roofs across Australia. roof riser for pergola Lifts the roofline above the existing gutter line Fixes to the rafter and wall top plate Suits tile and metal roof types Weather seal included with every kit Contact Roof Extenda to get the right roof riser for your pergola build.