CrystalShield Crystalline Concrete Sealer

Penetrating crystalline waterproofing admixture for basements, water tanks, swimming pools, and retaining walls. Reacts with free lime and moisture in concrete to form insoluble crystals, permanently blocking water pathways. Self-heals hairline cracks up to 0.4mm. 25kg bag treats ≈ 15 m² of slab.