Hi everyone, can anyone help me? I own my house mortgaged obviously

Anyway when I bought it, nearly 13 years ago, when it was just built they fitted it with wooden windows

double glazed with smears inside, being a bit young and naive then, didnt know how to complain etc etc. Anyway they are in dire need of replacement. Unfortunately can't have white upvc as stipulated by the vendors, can't have a pond either, but they'll never find out

. Anyway back to the real reason, does anyone know if scc give grants to homeowners to replace the wooden windows, did email the council with no reply so far (2 weeks ago) just that some colleagues at work mentioned it and nearly 4000 is a lot to save up on ya own. Anyone can help, will appreciate it. Cheers guys.