Crepuscular rays over North Wales

Yesterday and today we have had roofers here, redoing the roofs of three dormer windows . They have also disovered the cause of a roof leak manifested on our lounge ceiling. This now necessitates a new velux window which requires another team and so it goes on! On a brighter note the kitchen is almost finished and we will be very pleased to get back to normal! 
This is a raw image which I attempted to process, I guess I still have a lot to learn. I find that whatever the ISO and light the raw images always seem to have noise. Has anyone any ideas to help?!