SUBSTRATE PREPARATION

Careful surface preparation is very important for optimum finish and durability.

1. The surface needs to be clean, dry, sound and free of any contamination that may harmfully affect the adhesion of the membrane.
2. Maximum substrate moisture content should not exceed 5%.
3. New concrete structures need to dry for at least 28 days.
4. Old, loose coatings, dirt, fats, oils, organic substances and dust need to be removed by mechanical means such as a sanding machine. Possible surface irregularities need to be smoothened.

REPAIR OF CRACKS

The careful sealing of existing cracks and joints before the application is extremely important for long lasting waterproofing results.

1. Clean cracks and hairline cracks, from dust, residues or other contamination.
2. Cracks and joints larger than 2 – 3mm must be primed locally with solvent based primer ISOCRYL PRIMER DUR, or waterbased primer ISOCRYL PRIMER DUR AQUA and allow drying. Fill all prepared cracks with elastomeric acrylic filler FLEX.
3. Bigger cracks and expansion joins must be primed locally with polyurethane primer PRIMER PU 900 and filled with polyurethane sealant BONDFLEX.
4. Small cracks up to 2 – 3mm must be primed locally with solvent based primer ISOCRYL PRIMER DUR, or waterbased primer ISOCRYL PRIMER DUR AQUA and allow drying. Apply locally one coat of SWAN MONOPAL and on the wet coat dip a fibre net (30gr/m2) or fibre tape (60gr/m2) 4 - 10cm wide and recoat with SWAN MONOPAL.

Priming

1. Prime absorbent surfaces like concrete, cement screed, wood with solvent based primer ISOCRYL PRIMER DUR, or waterbased primer ISOCRYL PRIMER DUR AQUA. Allow drying for 2 – 4 hours.
2. Prime non-porous or difficult surfaces (metal, ceramic tiles, plastics) with ADHESIL PRIMER.

Application

1. Apply SWAN MONOPAL on the primed surface diluted 10% - 20% with clean water, using a brush, roller or spray gun. Allow drying for 12 – 14 hours
2. Apply a second layer crossways to the first layer, diluted up to max 5%.
3. For extra protection or where required a third layer may be applied.
4. Surfaces can be walked on at least after 24 – 48 hours. New treated surfaces exhibit a tackiness at the beginning, which disappears in due time.
5. For best results, the temperature during application and cure should be between 8oC and 35oC. Application must be avoided when rain or frost is expected. Make sure that the surface temperature is between 5oC and 35oC as direct sun exposure can increase this to more than 50oC.