Capaproof PUA H

Polyurea membrane for waterproofing and coating

• W3 certification — 25 years of useful life
• Versatility for all types of waterproofing

CAPAPROOF PUA H is a dual-component sprayable aromatic coating, suitable for waterproofing, protection and sealing. It is composed of two highly reactive liquid components, isocyanates and resins, which are mixed using specific spraying equipment, to form a solid, continuous, watertight and impermeable polyurea membrane, without joints or overlaps, with high mechanical qualities.
It is CE marked on the basis of a Declaration of Performance (DoP) drawn up in accordance with EU regulation 305/2011.

Capaproof PUA H

For the waterproofing and protection of:
• Flat walkable roofs, terraces, balconies and pitched roofs
• Inverted roofs (bottom insulation)
• Concrete slabs, retaining walls and foundations
• Swimming pools, aquariums, ponds
• Pitched or flat roofs of corrugated fibre cement, asbestos or similar.
• Protection of polyurethane foam thermal insulation systems.


225 kg metal drums in both components (Component A: isocyanates and Component B: amines)

Safety and hygiene

These safety recommendations during handling are necessary during the execution process, as well as in the processes before and after the execution in situations of exposure to machinery under load.
• Respiratory protection: When handling in aerosol form, an approved air-purifying respirator must be worn.
• Skin Protection: Wear rubber gloves. Remove immediately after contamination. Wear clean clothes that cover the whole body. Wash thoroughly with soap and water after work and before eating, drinking or smoking. Contaminated clothing should be washed and/or dry cleaned.
• Eye/face protection: Wear safety goggles to avoid splashing and exposure to spray mist.
• Waste: Waste generation shall be avoided or minimised. Incinerate under controlled conditions in accordance with local and national laws and regulations.
• In any case, consult the existing safety data sheets for the product, which are publicly available.

Aplication requirements (projection equipment)

For formation, it is necessary to mix the two initial liquid components, isocyanates and amines/polyols, by means of suitable dosing equipment. The most general parameters of this equipment shall be the following:
• Isocyanate heater temperature: 70-75ºC
• Amine heater temperature: 70-75ºC
• Hose temperature: ±70ºC
• Operating pressure: 2,500-3,000 psi
• Recommended mixing chamber: use mechanical purge chamber.
These temperature and pressure parameters must be assessed, ratified or slightly varied by the application agent, depending on the conditions of each climatic zone, climatic situation or according to the specifications of the spraying equipment.


The recommendations for use are based on our knowledge and experience. The technical data have been obtained under normal laboratory conditions and may vary depending on the conditions of installation. 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