All K2 roofs are made using an aluminium structure (i.e. the internal hidden element of the beams)

The difference comes when choosing the external cappings - these can be made of PVC or aluminium.

The choice is yours and will be based on your own preferences in terms of style (the finials and crestings are different for PVC and aluminium), colours, and of course quality (an aluminium finish is stronger, will last longer),

For further information visit http://www.k2conservatories.co.uk/customise-pvcu-or-aluminium