I highly recommend 'Practical hints to builders and those contemplating building' by National Sheet Metal Roofing Co. to anyone involved in the construction industry or those looking to expand their knowledge on sheet metal roofing. This book offers practical advice, technical details, and invaluable insights from an experienced author, making it a must-read for builders, contractors, and anyone interested in the construction process. Whether you are a beginner or a seasoned professional, this book will undoubtedly enhance your understanding of building techniques and the importance of quality construction practices.