Series of images showing before and after shots of a roof replacement. New vapour permeable sarking membrane and treated timber battens installed. Then composite concrete flat tiles. New mechanically fixed ridge tile system as per UK Building Regulations and mechanically fixed interlocking uPVC verge caps.

Ridge tiles and verge caps are essential to roof stability. In a storm wind creates direct presure on a roof but also suction force as the wind blows over the roof and uplift when the house walls deflect the air currents in different directions.