Surface Retarder Material:R20 5 Gallon If you order this product

If you order this product during the winter months while the weather is below freezing

Note: Mortar dries rapidly (1 1/2 - 2 minutes) so it is recommended that it is mixed and applied in manageable quantities (proceed by mixing small batches)

• Approved for use over properly prepared nonporous substrates

has excellent resistance to UV and prevents air infiltration

Surface Retarder Material:R20 5 Gallon If you order this productR20 HORIZONTAL SURFACE RETARDER is a water Based liquid that when sprayed on fresh soft concrete will retard the cement and expose the aggregate to produce a three dimensional surface and will retard the set of the surface cement between 12 to 24 hours after application when applied as directed. The amount of retardation will be influenced by the concrete setting time which, in turn, is influenced by air temperature, mix design, slump, wind, concrete