Bituthene 4000 is used in conjunction with the water based Bituthene 4000 Surface Conditioner and is designed to provide superior adhesion down to -4°C (25°F). Bituthene 3000 and Bituthene Low Temperature Membrane are used in conjunction with the solvent-based Bituthene Primer B2, Bituthene Primer B2 LVC or with the water-based Bituthene WP-3000 Primer. Bituthene 3000 can be applied down to 5°C (40°F) and Bituthene Low Temperature Membrane can be applied down to -4°C (60°F).