CERESIT® R 740 can be universally applied as a fast-drying priming coat before applying levelling compounds on absorbent and impervious substrates. It can also be applied before the direct bonding of wood flooring with reaction resin adhesives. Furthermore, it is suitable for strengthening highly absorbent and not sufficiently stable or dusting substrates.Available pack size: 12 kg.
Substrates must meet the general technical specifications- for comparable national standards. In particular they must be clean, free from structural defects, firm and free of substances which may impair adhesion.
Apply a thin, uniform priming coat with a suitable roller (see Technical Data). Avoid pooling of excess primer on the surface. When sealing the substrate against capillary rise of moisture or residual moisture in concrete floors or cement screeds, it is always necessary to apply a 2nd coat cross-wise after the 1st one has dried (after 24 hours at the latest).
After CERESIT R 740 Primer has cured, apply a coat of CERESIT R 766 Multi Purpose Primer undiluted.
CERESIT R 740 used for sealing old, existing substrates and mastic asphalt before direct bonding with elastic wood flooring adhesives (plasticizer barrier), protecting moisture-sensitive substrates such as firmly adhering adhesive residues, dry building boards, wooden substrates, magnesia screeds and magnesium-oxychloride screeds.
CERESIT R 740 can be universally applied as a fast-drying priming coat before applying levelling compounds on absorbent and impervious substrates. It can also be applied before the direct bonding of wood flooring with reaction resin adhesives.
Only carry out floor installation work if the floor temperature is above 15 °C, air temperature above 18 °C and relative humidity below 75 %. Immediately remove fresh spots of adhesive with industrial spirit (alcohol).