Roof Seal Primer 2.5L

Roof Seal Primer 2.5L is a one-part, solvent-free roof primer designed to enhance the bond strength of weatherproofing systems such as Roof Seal Liquid Membrane on bitumen-based, asphalt, and roofing felt substrates. Used as a single-coat preparation on bitumen and felt only, it acts as a bleed blocker to prevent bitumen staining through the top coat. Suitable for external use, it’s quick and easy to apply with a brush or roller, delivering a clean, stable base for long-lasting waterproofing performance.

• Type: One-part, solvent-free roof primer
• Use: Prepares and primes bitumen, asphalt, and roofing felt
• Function: Enhances bond strength of liquid membranes; blocks bitumen bleed
• Application: Single coat; apply by brush or roller
• Cure time: Approx. 18 hours at 18°C
• Application temperature: 5–25°C
• Coverage: Approx. 2–3 m² per litre
• Surface prep: Substrates must be clean, dry, and free from contaminants; remove organic growth before priming
• Size: 2.5 litres