Replacing the awning fabric is a fairly common task, but it is one that can be quite dangerous due to the spring mechanism(s) in the awning tube itself. Armed with the manufacturer and length of your awning, you can consult a dealer for that brand awning for a price on replacement fabric - - the color selection is amazing - - and if you happen to have the Zip Dee brand awning, you will also likely be able to duplicate the original stripe color. I suspect that the replacement awning fabric from the original manufacturer of your awning will likely be less expensive than the custom work that would be necessary to produce a new awning from raw fabric. My personal advice would be to consider having an experienced RV technician handle the replacement due to the danger of working with the roller-tube spring; but if you want to consier such a project on a do-it-yourself basis, a technical instruction sheet from your awning's manufacturer should provide you with the details to safely handle the spring mechanism(s) in the roller-tube.
Good luck with your awning project!
Kevin D. Allen
WBCCI (Lifetime Member)/VAC/Free Wheelers #6359
1964 Overlander International/1999 GMC K2500 Suburban (7400 VORTEC/4.11 Differentials)
1978 Argosy Minuet 6.0 Metre/1975 Cadillac Eldorado Convertible (8.2 Liter V8/2.70 Final Drive)