May I say how pleased I was with the speed and efficiency with which the job was carried out.  

Thank you very much for all your help, I would not Hesitate to recommend you to my friends.

Thank you for carrying out this work so promptly.

I was very impressed that you dealt with my problem as an emergency.   I would recommend you to any one needing roofing repairs.

You were very efficient and professional and thank you for a splendid job.

I would like to thank you for the repair and will certainly be recommending you to my friends and family.