In 2005 I built my house in Canton Tx. with SIPS I purchased at Korwall. This was one of the best choices I ever made. I had been told SIPS were a highly efficient and cost-effective building method. A friend in the hill country invited me to his new home the day put up his SIPS, it was impressive to say the least. In one day he had walls and a roof and was ready to begin interior construction. Since completing my house in the summer of 2006 I continue to be amazed every time I open my electric bill. My home has nearly 4800 sq. ft. and the average bill is $120.00 I often have months at less than $90 and rarely over $200. I just want to say thanks to Stan and all the folks at Korwall for helping me build such a wonderfully efficient home.