SikaLevel-01CA Primer is a concrete primer and sealer for use with Sika Level Underlayments and Sikafloor Level Overlayments. Use this product as a primer/sealer for absorbent substrates including concrete and cement screeds. It is particularly suitable as an adhesion promoter and surface sealer beneath Sika Level-125CA, Sika Level- 125 RapidCA, Sikafloor Level 25CA and Sikafloor Level 50CA, enhancing the bond and integrity of the underlayment/overlayment when applied onto porous substrates. It is ready to use, no dilution required.It is water-based and solvent-free, user and environmentally friendly, penetrates substrate to reduce outgassing and formation of bubbles in the underlayment/overlayment and prevents water loss from the underlayment/overlayment into the substrate. It is quick-drying and fast film formating to increase productivity. It achieves excellent bond values throughout the recommended range of application temperatures and effectively seals concrete surfaces in a single, economic operation.