Brian,

You need to find out what is is first. It looks like TPO, but might be PVC or even White EPDM. All these surfaces can be cleaned, but you need to bid it correctly, as they all clean differently. Especially white EPDM, it will be chalky. And PVC will have larger weft scrim inside the sheet that will cause dirt to settle there. Cal me with questions. 

Thanks John I will try and give you a call tomorrow if thats ok?

Thanks for your help.....I !appreciate it

No problem just give me a buzz