Designed for energy-conscious construction, Sikas Rmax Below-Grade Foam Polyiso Unscored Insulation Board addresses both insulation and protection in a single solution. Its closed matrix composition not only minimizes water absorption but also withstands damage during backfill, supporting stable installation. Whether used in foundation walls or under slabs, this unscored board balances resilience and ease of handling. It meets the needs of contractors and builders looking for dependable insulation that performs under the surface and over the long term.
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