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Roofer’s No.1 HP50 is a high-performance hybrid polymer sealant and adhesive offering exceptional adhesion, flexibility, and long-term durability. Suitable for interior and exterior use, it provides a weatherproof, vibration-resistant seal across a wide range of construction and roofing applications.

  • Flexible
  • Guarantee - 5 years
  • Store in dry place Temperature: +5°C to +25°C Shelf life: 12 months Keep tightly closed in original packaging
  • Use with adequate ventilation Avoid contact with skin and eyes Use gloves and eye protection
  • Downpipes, gutters & roofs
  • Instructions for use: Apply with sealant gun Use backer rod Fill joint fully with correct width-to-depth ratio Tool for full contact with joint walls Clean before cure with xylene or mineral spirits
Features and benefits
Roofer’s No.1 HP50 is an advanced hybrid polymer sealant formulated for demanding sealing and bonding tasks in roofing, construction, and general building environments. It delivers strong adhesion to most common building materials while maintaining long-term flexibility, making it ideal for joints subject to movement, vibration, and thermal expansion.

Designed for both indoor and outdoor use, HP50 cures to form a durable, elastic seal that resists cracking, shrinking, and weathering. Its excellent gap-filling properties and broad substrate compatibility make it suitable for use on metal, glass, timber, plastics, concrete, brick, masonry, and composite materials.

Available in black or clear, HP50 is widely used for fixing trims, sealing penetrations, bonding flashings, and general repair and maintenance tasks where a reliable, professional-grade seal is required.

Typical Applications
Roofing and cladding joints
Fixing trims, flashings, and roof accessories
Sealing gaps, cracks, and penetrations
General construction, repair, and maintenance work
Glazing and façade detailing

Technical / Specification Information
Product Type: Hybrid polymer sealant & adhesive
Cartridge Size: 300 ml
Colours Available: Black / Clear

Suitable Substrates
Metal
Concrete
Timber
Glass
Plastics
Brick and masonry
Composite materials

Compatibility / Usage Notes
Suitable for most common building materials used in roofing and construction
Can be used for both sealing and light bonding applications
Ensure surfaces are clean, dry, and free from grease, dust, or contaminants prior to application

Storage & Handling
Store unopened cartridges in a cool, dry place away from direct sunlight. Do not allow to freeze. Reseal partially used cartridges promptly to maintain product performance.

  • Advanced hybrid polymer technology for superior sealing and bonding
  • Strong adhesion to most common construction materials
  • High flexibility with excellent vibration and movement resistance
  • Weatherproof and UV-resistant for interior and exterior use
  • Excellent gap-filling capability
  • Long-lasting durability without cracking or shrinkage
  • Available in black and clear finishes

Roofer's No.1 HP50 High Performance Sealant Black 300ml

  • Brand: Roofers No.1
  • Product Code: 43RN1HPB
  • Availability: In Stock

  • £6.00

All Prices are exclusive of VAT


Tags: 43RN1HPB