Description
ISOCRYL FLEX MASTER PU HYBRID is one component, liquidapplied, hybrid waterproofing membrane based on polyurethane and synthetic acrylic resins. It is suitable for waterproofing old and new building surfaces. It forms an elastic seamless vapor permeable membrane without joints with excellent resistance to humidity, weather conditions as well as high temperatures and UV rays.
ADVANTAGES
- Hybrid technology
- Elastic, seamless, vapor permeable and reflective membrane without joints
- Excellent elasticity
- Superior adhesion on most building surfaces
- Excellent water - humidity resistance
- Excellent resistance to ageing and UV rays
- User and environmentally friendly - does not contain organic solvents
- Simple application
- Waterbased - nonflammable - easy to clean
APPLICATIONS
- Waterproofing of rooftops and terraces.
- Waterproofing of gutters, domes, cornices, ondulated panels etc.
- Waterproofing bitumen and polyurethane hard foam surfaces.
- Suitable for concrete surfaces, bitumen material, wood, stone, brickwork, PVC, polyurethane foam, plaster, metal etc.
Specifications
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Coverage:
1 - 2 m2/Lt on smooth surfaces
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Thinning:
5% - 15% with clean water
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Application:
by brush
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Application:
by roller
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Application:
by spray gun
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Touch dry:
18 hours 20oC
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Hard dry:
7 days 20o
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Exterior use
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Application temperature:
5oC - 35oC
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Cleaning:
with water
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Instructions for use
Substrate preparation
Careful surface preparation is essential for optimum finish and durability.
The surface needs to be clean, dry and sound, free of any contamination, which may harmfully affect adhesion.Remove any loose parts. Fresh concrete needs at least 28 days to set. Humidity should not exceed 6%. Previous coatings, grease, plant organisms and dust should be removed with the use of a floor sanding machine and washed with high-pressure water. Surface irregularities must be smoothed out. Loose parts or sanding dust must be removed.
Repair of cracks and joints
The careful sealing of existing cracks and joints before the application is extremely important for long lasting waterproofing results.
- Clean concrete cracks and hairline cracks, from dust, residues or other contamination.
- Cracks and joints 3-8mm 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 or ISOCRYL FLEX MASTER PU HYBRID.
- Larger cracks and expansion joints 8-20mm must be primed with polyurethane primer PRIMER PU 900 and sealed with polyurethane sealant BONDFLEX.
- For smaller cracks 2-3mm it is recommended to prime with solvent based primer ISOCRYL PRIMER DUR, or waterbased primer ISOCRYL PRIMER DUR AQUA. Apply one coat of ISOCRYL FLEX MASTER PU HYBRID, and while the surface is still wet apply fibre net (30gr/m2) or fibre tape (60gr/m2) at least 10cm wide. Then apply another coat of ISOCRYL FLEX MASTER PU HYBRID.
Priming
- Prime absorbent surfaces like concrete and cement screed with solvent based primer ISOCRYL PRIMER DUR, or waterbased primer ISOCRYL PRIMER DUR AQUA. Allow drying for 2 - 4 hours.
- Prime non-porous or difficult surfaces (aluminium, plastics) with ADHESIL PRIMER.
Application
- Apply ISOCRYL FLEX MASTER PU HYBRID on the primed surface diluted 5% - 15% with clean water, using a brush, roller or spray gun. Allow drying for 12 - 14 hours.
- Apply a second layer crossways to the first layer, diluted to 5%.
- For extra protection or where required a third layer may be applied.
- 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.
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.
CLEANING
Clean all tools and equipment with water and soap right after application. Cured material can be removed only by mechanical means or varnish and paint remover MERCOLA STRIPP & CLEAN.
