We are currently installing a domestic PV system with JA Solar 300W Percium modules and Solar Edge optimisers.
The image shows how the roof anchors are secured to the rafters with stainless steel roof screws and the Hook Stop mat is used to replace the tile that would sit immediately beneath the roof anchor.
The panels are clamped to the rail securing them in place. The installation has been designed to deal with the wind and snow loadings of the specific geographic location.
The roof ladders have 25mm thick foam fixed to the resting bars to displace any point loads caused by our operatives moving up and down them. This reduces tile breakages and saves time on site replacing damaged tiles.