Joyce,
Thank you so much for your kind words we always strive to helpful. In fact our company is dedicated to customer service and we stay that way from the beginning to the end and beyond. I have not found another company that offers a 20-year no crack warranty. If you recieved the samples we sent pleas take the one on wood and beat it with a hammer. Please look over our web-site at www.grailcoat.com or call our office someone will be happy to answer your questions.
Thank you
Linda Meierer
Sales Manager
The GrailCoat Company LLC