Bostik Flexacryl Instant Repair for Roofs can be brushed straight from the tin onto substrates such as old roofing felt, asphalt, bituminous roof coatings, cement, concrete, lead work, metal, brickwork, slate and rigid PVC. Bostik Flexacryl Instant Repairs for Roofs is also suitable for application to gutters and flashings. If using Bostik Flexacryl Instant Repair for Roofs on a roof or balcony subject to heavy traffic, regular use or the placing of objects such as garden furniture, promenade tiles or a similar protective material must be used
