WATERPROOFING AND REPAIR SYSTEM FOR CONCRETE ROOFS

Waterproofing and repair system for concrete/screed roofs

1. Clean the surface with a high-pressure washer
2. Repair cracks in surface and correct slopes, if necessary
3. Waterproof rainwater drains
4. Waterproof through pipes
5. Apply on the whole perimeter and around passing structures SUPERSHIELD FLEXSTRIP 80/150, elastic self-adhesive butyl waterproofing strip, inserted between two coats of SUPERSHIELD FLEXI, cement / polymer liquid membrane
6. Apply on the entire surface SUPERSHIELD PRIMER H, water-based primer for low absorption screeds, mortars and coatings, viscosity 600+/- 20, pH 7,7+/- 0,5, adherence to substrate treated with PRIMER H:>0,4 N/mm2, reaction to fire: Euroclass A1 (not inflammable), colour: orange   
7. Apply by roller or low pressure pump the first coat of SUPERSHIELD FLEXI, liquid waterproofing cement / polymer membrane, highly elastic, resistant to UV rays, permeable to water vapor, certified at norm EN 1504-2 and 14891, permeability to CO2 at norm EN1062-6:  214 m.,  adhesion by direct traction norm EN 1542: 1,7, permeability to water vapor EN 7783-1: class I Sd 2,4 m., capillary absorption and water permeability norm EN1062-3: <0,041 kg-m-2-h-0,5, applied after having wet the surface of the screed at touch dry condition, with a consumption of 1, 2 kg / m2. and turning it up on the walls for at least 15 cm.
8. Apply the SUPERSHIELD ELASTIC MESH, polypropylene mesh (thickness 0,6 mm., weight 60 gr/m2, lateral elongation at break EN 527-3: 180 N/ 50 mm., longitudinal elongation at break: EN 527-3: 240 N/ 50 mm., lateral deformation at break: 105 % longitudinal deformation at break:38%), on the first coat of SUPERSHIELD FLEXI while it is still fresh, overlapping the sheets by 5 cm. 
9. Apply crosswise with respect to the first coat by roller or low pressure pump the second coat of SUPERSHIELD FLEXI, waterproofing cement / polymer  liquid membrane, with a consumption of 1, 2 kg / m2. and turning it up on the walls for at least 15 cm.
10. Apply on all the surface SUPERSHIELD PRIMER TH, water-based primer for low-absorption surfaces, composed by synthetic resins in dispersion, fillers, organic and inorganic additives, density 1,0 + / - 0,1 kg / lt., solid content by weight > 45 %, pH 8,5 
1. Apply by roller or low pressure pump a first coat of SUPERSHIELD ROOFON, waterproofing polyurethane aliphatic liquid membrane, single component, water based, UV resistant, permeable to water vapor, thermo insulating (white), with high crack bridging capacity, compliant to norm EN 1504-2, CO2 permeability at norm EN1062-6:  310 m.,  strength of adhesion to indirect traction EN 1542: 3 N/mm2, permeability to water vapour EN 7783-1: class I, Sd <1,3 m., capillary absorption EN1062-3: <0,007 kg*m-2*h-0,5, solar reflectance ASTM  E 903-96: 91%, elongation at break ASTM D412: >600%, dosed at 0,5 kg/m2, after diluting it with 5/10 % clean water and turning it up on the walls for at least 15 cm.
2. Apply crosswise by roller or low pressure pump a second coat of SUPERSHIELD ROOFON, waterproofing polyurethane aliphatic liquid membrane, dosed at 0,5 kg/m2, not diluted and turning it up on the walls for at least 15 cm.