Capaproof PU ALI

Transparent aliphatic polyurethane waterproofing membrane

• Aliphatic
• Very high UV resistance
• Transparent
• Highly wear-resistant
• Great elongation capacity

CAPAPROOF PU ALI, is a transparent, aliphatic polyurethane resin which, once cured, creates a continuous, elastic, seamless, waterproof and watertight membrane without joints or overlaps.


To be applied in these types of situation:
• Waterproofing of roofs, weight-bearing terraces.
• Waterproofing of balconies, cornices or protruding elements.
NOTE: consult our technical department for application on other types of substrates or settings.


It is presented in 20 kg metallic containers.

General characteristics

• Continuous waterproofing membrane, without joints
or overlaps, suitable for trafficability (light traffic)
• It is completely glossy, transparent and UV resistant
• The substrates suitable for the application of CAPAPROOF PU ALI are tiles, natural stones and wood. For other types of media, please contact our technical department.
• As it is a liquid material, it adapts to any roof shape, forming a continuous coating without joints or overlaps.
• Pre-apply the CAPAPROOF PRIMER ALI primer to avoid the appearance of efflorescence and increase its adherence to the substrate.
• Not recommended for waterproofing swimming pools, lakes or any areas fully immersed in water.
• Once shaped, do not clean the substrate with bleach or highly corrosive products.
• Do not apply in conditions where there is moisture in the substrate or water coming from inside the substrate or support, either at the time of application or afterwards (water pressure due to water table, moisture retained in the substrate).


The product yield is 0.5 to 1 kg/m2 applied in 1 or 2 coats depending on application method and conditions.


The recommendations for use are based on our knowledge and experience. The technical data have been obtained under normal laboratory conditions and vary depending on site conditions. As the conditions of application are beyond our control, the information in this sheet does not imply any liability on the part of the company.


Declaraciones Medioambientales

Concienciados con el medioambiente