Product Description. BLACK JACK BITUMEN PRIMER is a thin black primer used to give a key prior to applying bitumen paints and roof coatings. Also suitable as Primer & Sealer: Thin Black Primer Thin Black Primer for roof coatings and flashing is weatherproof roof sealant prior to applying bitumen paints, roof coatings and flashings. Large Coverage: Bitumen and flashing primer is a thin black primer that covers an area of approx 10-metre square per litre available in 1 Litre, 5 Litre tins. Dries Fast The drying time for 902 Bitumen and Flashing Primer is only 24 hours!, Unlike Roof Coating Primer Black Jack 902 Everbuild Bitumen And Flashing Primer – James Chambers Timber, Fencing Flashing Primer For Weatherproofing FOR EXTERIOR USE – Used to give a key coat, which helps coatings adhere to problematic surfaces. Can be used prior to applying bitumen paints, roof coatings and... Fast Drying: Featuring a drying time of just 24 hours, this 902 Bitumen and Flashing Primer dries quickly so that you can spend less time waiting for results. Black Jack 902 Bitumen and Flashing Primer Thin Black Primer For Roof Coatings and Flashing Weatherproof Solvent Features Approx Coverage 10 Metre Square Per Litre, Exterior Use, Fast-Drying, Primer & Sealer, Solvent Based BITUMEN & FLASH PRIMER 5L | Timber Kent | Decking, Fascias, Upvc Doors Primer & Sealer: Thin Black Primer for roof coatings and flashing is weatherproof roof sealant prior to applying bitumen paints, roof coatings and flashings.