"It isn't often we find the cooperation and attitude of the roofing crews so pleasant to encounter. We have a special debt of thanks to your foreman and his crew for the manner in which they maintained the professionalism and upbeat attitude on the site at all times. We recognize the crew must be of a special caliber, each of their own merit."
"I have been asked by our management team to express to you our appreciation for the cooperative manner in which you pursued your work on our job site. Projects always go smoother when people work together and the level of cooperation you gave us was exemplary."
"We appreciate you all, and thank you for a project very well executed and in good time."
"Please pass on our appreciation to any staff involved as well as our hope we will have the opportunity to work with you again in the very near future."