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Thermal Blocks in Metal Buildings.  The SNS Continuous Insulation System is the only System using a Thermal Block over the top of a Roof Purlin that is fully tested and proven to be “Structurally sound, Water tight, and Last the Lifetime” of a Metal/Steel building. The SNS Thermal Block is placed between the roof sheet and the roof purlin.   The SNS System is for use with Architectural, Standing Seam, and Screw down roof and wall panels in metal/steel buildings. Designed to be structurally sound, water tight, and has a long roof performance life.  Building Owners today need Energy Efficient Metal Buildings.  Make sure they get a tested and proven product.  Easy and fast installation for complete building envelope, instructions are included.  Reduces HVAC Operating Costs by as much as ½ or even more.  Lowest “U” Factor/Highest “R” Factor in the Industry Isolates outer shell from structural framing.  Tested per AISI, ASTM, ICC, US Energy Codes and more. Complete information and Test Results available here.