Plastic sail-track, purpose-built for sails and boat awnings is available from C-Tech Ltd. It comes in 3 meter lengths.
The track has maximum UV properties and is made from the highest-quality PVC with a high temperature resistance. It has been used on boat masts for the last 6 years and is lasting well.

Characteristics
The track has a vee'd back which makes it adaptable to flat or radius surfaces. It can be curved to almost any radius using a heat-gun.

This makes it ideal for use as awning track. It is produced in white, which doesn't go brittle as quickly as coloured PVC.

Attachment
Track can be easily bonded on to surfaces using Sika Flex 252 (which is also available in white). Sika Flex can easily be slit to remove a damaged portion of track, making it easy to do repairs if necessary.