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Altex Yacht & Boat Paint Polyurethane Undercoat is a high
performance, sandable undercoat which exhibits a number of
significant advantages over existing PUR undercoats.

By combining new technology polyurethane binders, Altex
Polyurethane Undercoat features excellent build
characteristics & superior water resistance, coupled with
low temperature cure & extended pot life. The sanding
qualities are second to none.

Polyurethane Undercoat is recommended for:
Use above the waterline only
Maximised adhesion when transitioning between epoxy
undercoats and the selected polyurethane finish coat - in
all marine situations
Direct application to sanded, aged polyurethane topcoats for
“Two step – Two coat” maintenance repaint work
Exterior topside & superstructure final sealing to provide a
fully recoatable surface for extended periods before sanding
& finish coating
Application over all AY&B epoxy systems
Excellent build tolerance up to 100µm DFT in a two pass
application
Superior sanding properties
Wide maximum over coating times for easy project management