Headquartered in Slatington, PA, since 1934, PBBS mines and manufactures slate for roofing, construction, and architectural applications. It’s the leading source of Pennsylvania slate and is known to last 150+ years.(Image: https://boxerroofing.com/wp-content/uploads/2023/01/Roofing-in-Morrisville--768x1024.webp) They have the largest selection of Energy Star approved materials and coatings, with LEED compliance across its entire line of paint choices. Carlisle Construction Materials LLC is a premium manufacturer of single-ply roof solutions, including PVC, EPDM, and TPO.