Delta Membranes Systems - Koster NB 4000

Koster NB 4000 is a polymer modified, mineral hybrid coating for the internal and external waterproofing of building structures.

Koster NB 4000 cures reliably and quickly in ambient conditions, meaning minimum down time for application.

NB 4000 can be applied at a temperature of + 2º C upwards, is resistant to rain after as little as 2 hours and can be exposed to pressurized water after only 24 hours of curing time.

Koster NB 4000 is elastic, has excellent crack bridging capabilities and can even be applied directly to slightly moist of bitumen contaminated substrates.

Koster NB 4000 can be used in the following fields of application: basements, foundation plates, masonry, buried roofs, podium decks, green roofs and retaining walls and the repair of mineral waterproofing layers.

Features

Bitumen and solvent-free material
Very fast curing even at very low temperatures (from + 2 °C)
Very early rain proof (2h)
Compatible with old bituminous or mineral waterproofing systems
Can be applied as a mortar, sprayed, rolled and brushed
Applicable on dry or slightly damp surfaces
Paintable and coatable with foundation renders and facade plasters
Crack bridging up to 3.5 mm Insulation boards can be installed after approx. 4 h
Usable on horizontal or vertical surfaces
Resistant to pressurized water after 24 hours
UV resistant/stable
Can be used under cement screeds
Can be used under tiles on wet rooms
Slightly vapor permeable