Bitumen primers are an important part of roof waterproofing systems, helping to prepare substrates and promote adhesion between the roof deck and subsequent waterproofing layers. Sika's range of bitumen primers includes spray-applied, solvent-based and water-based solutions suitable for a variety of substrates and project requirements. Designed for use with bituminous roofing systems, these primers help create a well-prepared surface for the installation of vapour control layers and waterproofing membranes. The range includes fast and convenient spray-applied primers, low-odour water-based options and other versatile primers suitable for a variety of roofing and waterproofing applications.