Sikalastic U-Primer PU primer for concrete

A one-part, solvent-based polyurethane primer for concrete and cement-based screeds with low to medium absorbency. Use it before Sikalastic-632 R or Sikalastic-692 R roof waterproofing and coating systems (SikaRoof MTC and Pro systems). It penetrates absorbent surfaces, bonds very well, helps stabilise the substrate, reduces outgassing and dries fast. Apply by brush or roller.

Key specs

• Pack: 14 kg container (check the current price list for other packs); transparent brownish liquid
• Waiting time before the next coat: at least 4 hours at +20 °C / 55 % humidity (3 hours at +30 °C / 85 %); no more than 24 hours
• Apply when air is +10 °C to +40 °C and substrate +10 °C to +60 °C; humidity 85 % or less; substrate moisture 4 % or less
• Density about 1.01 kg/L
• Store sealed and dry at +10 °C to +30 °C; shelf life 9 months