PCI BT 26 »all-weather« primer is a high-quality, water-dilutable bitumen-rubber emulsion for surface preparation and bond improvement prior to installing self-adhesive cold-bonding PCI BT 21 »all-weather« waterproofing membranes, PCI BT 23 »all-weather« waterproofing strips and PCI BT 42 sealing tapes. PCI BT 26 can be applied on mineral and old bituminous substrates and is suitable for indoor and outdoor use.