Wakol PU 280 Primer/Moisture Barrier

WAKOL PU 280 Polyurethane Primer – roll-on product for blocking moisture on a concrete screed, and also strengthens the screed in preparation for the glue down of wooden flooring using Wakol MS 230 adhesive and Wakol MS 232 sausages. After a 2 coat application will safely block moisture up to 6% measured on a Concrete Tramex meter.

Technical Information
Area of application
1-component reaction resin primer for :
priming absorbent and non-absorbent subfloors
reinforcing abraded concrete edges
blocking excessive residual moisture up to max. 6 CM% in cement screeds without floor
heating
blocking excessive residual moisture up to max. 3 CM% in cement screeds with floor
heating
blocking excessive residual moisture up to max. 7% by weight in concrete
indoors and outdoors.

Special properties
solvent-free according to TRGS 610
suitable on underfloor heating
suitable for wheelchairs

Technical data
Raw material base: polyurethane resin
Drying time: approx. 40 – 50 minutes, at least 2 hours for quartz containing
layers
Cleaning agent: WAKOL RV 105 Neoprene Dilution, in fresh condition
Storage time: 12 months in tightly sealed containers
Storage temperature: not below +5°C, sensitive to frost
GISCODE: RU1
EMICODE according to GEV: EC1 PLUS R

Application and consumption:
WAKOL
Primer roller, velour or
foam roller 100 – 150 g/m² at only one application as a primer

WAKOL
Primer roller, velour or foam roller 250 – 350 g/m² at the double or triple application as a moisture barrier

Subfloors
The subfloor and the climatic conditions of the room must meet the requirements of
DIN 18356 or DIN 18365. Exempt from this is only the residual humidity contents of the
subfloor if WAKOL PU 280 Polyurethane Primer is being used for blocking capillary humidity.
Mechanically pretreat and thoroughly vacuum-clean calcium-sulphate-based screeds according to manufacturer’s specifications or according to the currently applicable standards and codes.
WAKOL PU 280 Polyurethane Primer may only be used as a moisture barrier on permanently moisture resistant subfloors and for blocking off capillary moisture.
WAKOL PU 280 Polyurethane Primer may not be used on subfloors with permanently ascending moisture and steam diffusion. The product does not replace anx waterproofing of the building according to DIN 18195 part 4.
Usage
Shake WAKOL PU 280 Polyurethane Primer well before using. Apply evenly with WAKOL primer roller, velour or foam roller, avoid puddles. If WAKOL PU 280 Polyurethane Primer is used as a moisture barrier, it must be applied crosswise in 2 layers. Each layer must form a thin, continuous film. After the primer has dried, but within 72 hours, carry out the direct adhesion or apply within 24 hours an adhesion bridge with WAKOL D 3045 Special Primer and trowel with Wakol Levelling Compound. For details contact our technical department Instead of applying the special primer, the third layer of WAKOL PU 280 Polyurethane Primer can be applied. In this case, sprinkle the entire last layer with WAKOL S 28 Sprinkling Sand before the primer dries. After the primer has dried, at least 2 hours, sweep and vacuum the surplus sand.
Levelling with Wakol Levelling Compounds may be done after the subfloor is completely dry.
Precoated areas may be walked on after approximately 40 – 50 minutes. Wakol Polyurethane
Resin Adhesives e.g. WAKOL MS 230 Parquet Adhesive, elastic, WAKOL MS 240 Parquet
Adhesive, elastic, WAKOL MS 260 Parquet Adhesive, firm-elastic, WAKOL MS 250 Parquet
Adhesive, elastic, WAKOL MS 290 Parquet Adhesive, WAKOL PU 210 Parquet Adhesive,
WAKOL PU 215 Parquet Adhesive, WAKOL PU 225 Parquet Adhesive or WAKOL PU 270
Polyurethane Adhesive can be applied directly on the dried primer WAKOL PU 280
Polyurethane Primer within 72 hours.

What’s in the box
1 x Wakol PU 280 5kg Plastic Container with instructions