Roofing Sealants

Understanding Roofing Sealants

Roofing sealants and liquid compounds provide essential weatherproofing for refurbishment projects and immediate leak repairs. The available range utilises established chemical technologies, including traditional solvent-based bitumen and advanced fibre-reinforced acrylic resins, to create impermeable barriers against water ingress. These liquid-applied coatings form continuous protective layers that eliminate joints, a common failure point in sheet-based roofing.

These solutions are formulated for application across diverse substrates such as roofing felt, asphalt, concrete, fibre cement, and metals. Whether requiring a full overcoat to extend the life of an aging roof or a targeted patch repair in damp conditions, selected formulations offer flexibility to accommodate thermal movement without cracking. The inclusion of specialised primers ensures that porous surfaces are adequately sealed to maximise the adhesion of subsequent flashing tapes or topcoats.

Material Range

• Bituminous Coatings: Traditional solvent-based solutions designed for the general waterproofing and weather protection of steel, concrete, and fibre cement roofs. This selection encompasses standard protective paints for metal and concrete, alongside heavy-duty, weather-resistant coatings like Everbuild Black Jack All Weather Roof Coat.
• Resin-Based Repair Compounds: Fibre-reinforced acrylic formulations capable of bridging small cracks and gaps, designed for immediate application, often without the need for a primer. Products such as Evercryl Roof Repair and Everbuild Liquid Roof provide instant waterproofing and are capable of adhering even in wet or damp weather conditions.
• Surface Primers: Thin, solvent-based preparations intended to seal porous surfaces and improve the adhesion of bituminous topcoats and flashing tapes. Solutions like Black Jack Bitumen & Flashing Primer are essential for binding dust and preparing concrete, masonry, and slate prior to overcoating.
  
  

Performance Benefits

• Water Ingress Protection: Creates a continuous, non-permeable barrier that prevents leaks and moisture damage across flat and pitched roof structures.
• Substrate Versatility: Bonds effectively to common roofing materials, including roofing felt, asphalt, concrete, fibre cement, slate, and metals.
• Ease of Application: Liquid-applied formulas allow for seamless coverage around complex details, upstands, and penetrations where sheet materials may struggle to seal effectively.
  
  

Typical Applications

• General Waterproofing: Overcoating existing felt or asphalt roofs to rejuvenate the surface and extend service life.
• Emergency Repairs: Sealing splits, cracks, and holes in roofing membranes, gutters, and valleys, capable of application in damp weather.
• Metal Protection: Coating corrugated iron and steel roof structures to provide a protective barrier against corrosion and weathering.
• Surface Preparation: Priming porous concrete and brickwork to ensure a sound key for bitumen paints or self-adhesive flashing tapes.
  
  

Specification & Standards

• BS 3416 Type 1: Relevant to specific bituminous paints within the range for the protection of iron and steel against corrosion.
• ISO 9001: Materials are manufactured under quality management systems ensuring consistent batch composition and performance.
  
  

Related Materials and Construction Uses

These liquid sealants and primers function as integral components within wider roofing maintenance systems. They are frequently used alongside reinforcement scrims or bandages to provide additional tensile strength over significant cracks and joints. 

Furthermore, bituminous primers are often a prerequisite for ensuring the effective bonding of self-adhesive flashing tapes and torch-on felt membranes, ensuring a secure seal at critical junctions such as chimneys, parapet walls, and skylights.