Description
ISOCRYL PREMIUM PU HYBRID is a one component, premium grade, high performance liquid-applied, PU 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. Due to the innovative HYBRID PU-ACRYL technology it is the most suitable water-based material for high demand applications with long lasting results.
ADVANTAGES
- 12 years durability – PU HYBRID technology
- Polyurethane technology – ponding water resistance
- Fast drying formula – minimizes labor costs
- Contains nanofibers – excellent small joint – gap bridging
- Elastic, seamless, vapor permeable membrane without joints
- Excellent elasticity up to 400% and ability to follow substrate expansion
- Highly reflective to sun UV rays offering thermo insulation advantages
- Superior adhesion on most building surfaces
- Maintains its mechanical properties over a temperature span of -15oC to +70oC
- Excellent resistance to water & ageing
- The waterproofed surface can be walked on
- User and environmentally friendly - waterbased
- Easy to apply (one component – ready to use material)
APPLICATIONS
- Waterproofing of rooftops and terraces
- Waterproofing of gutters, domes, cornices, ondulated panels, flowerbeds, planter boxes etc
- Waterproofing bitumen and polyurethane hard foam surfaces
- Suitable for concrete surfaces, bitumen material, wood, stone, brickwork, PVC, polyurethane foam, plaster, plasterboard, metal etc
Specifications
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Coverage:
0,8 - 1,2 Lt/m2
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Thinning:
0 - 10% 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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Light pedestrian traffic time:
4 hours
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Final Curing time:
24 - 48 hours
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Exterior use
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Application temperature:
+8oC to +35oC
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Cleaning:
with soap and water
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Instructions for use
Substrate preparation
Careful surface preparation is very important for optimum finish and durability.
- The surface needs to be clean, dry, sound and free of any contamination that may harmfully affect the adhesion of the membrane.
- Maximum substrate moisture content should not exceed 6%.
- New concrete structures need to dry for at least 28 days.
- 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 cracks and joints before the application is extremely important for long lasting waterproofing results.
- Carefully clean cracks and joints from dust, grease, loose debris.
- Capillary and small cracks up to 3mm must be primed with ISOCRYL PRIMER DUR AQUA water-based primer or ISOCRYL PRIMER DUR solvent-based primer and allow drying. Apply a layer of ISOCRYL PREMIUM PU HYBRID. Immediately apply on wet surface polyester fabric (capillaries) or fiberglass tape (small cracks) 30 – 60 gr/m2 respectively and again two more successive layers of ISOCRYL PREMIUM PU HYBRID.
- Cracks from 3mm to 20mm and expansion joints are primed with PRIMER PU 900 and then sealed with polyurethane sealant BONDFLEX 290LM.
- Larger cracks and holes are closed – smoothed with the fiber-reinforced repair cement mortar ISOMIX MECHANIC R4 and after the cement has dried apply polyester fabric and two layers of ISOCRYL PREMIUM PU HYBRID.
- Assembly points such as water heater bases, air conditioners, stairs, antennas, etc. must be sealed with a thick layer of ISOCRYL REPAIR thixotropic, fiber reinforced roof coating and allow drying before proceeding with the application of ISOCRYL PREMIUM PU HYBRID.
Priming
- Prime absorbent surfaces like concrete, cement screed, wood with solvent-based primer ISOCRYL PRIMER DUR, or water-based primer ISOCRYL PRIMER DUR AQUA. Allow drying for 2 – 4 hours.
- Prime non-porous or difficult surfaces (metal, ceramic tiles, plastics) with EPOXITE DUR AQUA.
Application
- Stir product well before use.
- Pour the ISOCRYL PREMIUM PU HYBRID diluted 10% with clean water onto the primed surface and spread it using a roller or brush, until all surface is covered. You can use airless spray allowing a considerable saving on labour cost. Allow drying for 4 – 24 hours.
- Apply a second layer of ISOCRYL PREMIUM PU HYBRID crossways to the first layer, diluted up to max 5%.
- For extra protection or where required a third layer may be applied.
- Surfaces can be walked on at least after 48 hours. New treated surfaces exhibit a tackiness at the beginning, which disappears in due time.
- Application of ISOCRYL PREMIUM PU HYBRID must be avoided at temperatures below 8oC and above 35oC and when frost or rain is expected.
RECOMMENDATION: We recommend reinforcement of the entire surface, with fiber cloth, by applying one coat before the reinforcement and 2 coats after. On surfaces with frequent pedestrian traffic, apply a layer of DRYMAX POLYURETHANE TOPCOAT after ISOCRYL PREMIUM PU HYBRID to increase abrasion resistance.
ATTENTION: Do not apply ISOCRYL PREMIUM PU HYBRID over 0,5 mm thickness per layer (0,5Lt/m2). For best results, the temperature during application and curing should be between 80C and 350C. Low temperatures delay curing while high temperatures speed up curing. High humidity may affect the final finish. Do not apply ISOCRYL PREMIUM PU HYBRID in negative temperatures or when rain or frost is imminent within the next twenty-four hours.
cleaning
Clean all tools and equipment with water and soap right after applications. Cured material can be removed only by mechanical means.
