DIY-DIRECT\n\n--Our eBay Store\n\n--About Us\n\n--Contact Us\n\n--Add to Favorite Sellers\n\nIsoflex Professional Special Primer - Clear - 750ml\n\n \n\nISOFLEX SPECIAL PRIMER\n\nIsoflex Special Primer is ideal for preparing difficult roofing surfaces - old roofing felt, tiles, bricks, cracked bitumen and mastic repairs. It\u2019s the perfect base for Isoflex Liquid Rubber.\n\nTough, durable basecoat\n\nDries in 4 hours\n\nUse before applying Isoflex Liquid Rubber\n\nPreparation \n\nGive the surface a decent scrub with a stiff bristle brush to remove any dust or dirt.\n\nTreat any fungal growth with a fungicide and allow to dry.\n\nFill any cracks or holes, if needed.\n\nCut open any old felt blisters and apply a coat of Isoflex Liquid Rubber underneath and secure with felt tacks. \n\nApplication\n\nFor best results, use on a fine, dry day with temperatures above 10C.\n\nGive the tin a really good stir before and during use.\n\nUse a brush for this job and apply one generous coat acr;