BLOCK-FILL SOLUTIONS PolyMaster R-501 is the ideal insulation for concrete block. By top fill, side fill, or "pressure fill." It can be installed in 10-foot to 16-foot lifts during construction. Blocks are easily filled in either running or stacked configurations. Pressure-fill applications require only 5/8" holes drilled directly into masonry. Pre-expanded PolyMaster foam flows into and fills cavities, up to 12 feet vertically from the insertion hole. Pressure filling generates a complete fill of the core and head joints, since the foam moves unrestricted throughout the block wall. BLOCK-FILL BENEFITS PolyMaster R-501 is pre-expanded. • Benefit – little or no risk of cavity stress. PolyMaster R-501 yields exceptional R-values. • Benefit – better comfort and energy savings. Reliable HVAC design specifications PolyMaster R-501 has less moisture than other foams. • Benefit – less likely to produce "wet wall." PolyMaster R-501 is dry when shipped. • Benefits - one-year shelf life, product always fresh PolyMaster R-501 is a globally green product with no CFC’s. • Benefits – biodegradable, dermatologically safe, acceptable worldwide. PolyMaster R-501 is an aminoplast, tri-polymer, kiln-dried resin. • Benefits – odorless, lowest shrinkage rate in the industry. PolyMaster R-501 is a third-generation product. • Benefit – 20 years of proven performance and product improvements ensure remarkable value. PolyMaster R-501’s adaptability and reliability ensure quick, clean installation. • Benefits – cost effective, minimal site disruption. [Block Fill]          [Tank Fill]          [Other Applications]