ASTM D3019/D3019M-17(2024)

Overview

ASTM D3019/D3019M-17(2024) is an international standard that specifies requirements for lap cement used with asphalt roll roofing, both in non-fibered and fibered forms. Developed by ASTM International, this standard addresses the physical properties, classification, sampling, and testing methods for lap cements. These materials are essential in roofing applications to ensure strong, weather-resistant bonds between laps (overlapping sections) of asphalt roll roofing. The standard supports product consistency, safety, and compliance with global roofing industry requirements.

Key Topics

• Types of Lap Cement:

  • Type I (Non-Fibered, Brushing Consistency): Used in the exposed-nailing method, contains no mineral or other stabilizers.
    • Grade 1: Made with air-blown asphalt.
    • Grade 2: Made with vacuum-reduced or steam-refined asphalt.
  • Type III (Fibered, Heavy Brushing or Light Troweling Consistency): Designed for the concealed-nailing method, contains mineral or other stabilizers but excludes asbestos.

• Physical and Chemical Requirements:

  • Water content limits
  • Distillation characteristics at specified temperatures
  • Softening point of residue
  • Solubility in trichloroethylene
  • Strength of lap bond at specified ages

• Testing and Sampling:

  • Detailed methods ensure consistency and performance
  • References key ASTM test methods (D6511/D6511M, D36/D36M)

• Packaging and Labeling:

  • Requires packaging and clear marking per relevant regulations and ASTM guidelines

Applications

ASTM D3019/D3019M-17(2024) lap cements are primarily used in the installation and repair of asphalt roll roofing for commercial and residential buildings. Key practical applications include:

• Exposed-Nailing Application: Utilizes Type I non-fibered lap cement for bonding laps where nails are visible, ensuring weather-tight seams.
• Concealed-Nailing Application: Employs Type III fibered lap cement for laps with hidden nailing. The added stabilizers improve adhesion and performance, vital for long-term roof durability.
• General Roofing Repairs: Both types and grades provide waterproofing and bonding for repair tasks involving asphalt roll materials.
• Product Selection and Specification: Roofing contractors, architects, and manufacturers rely on this standard to select compliant lap cements, supporting quality assurance and performance guarantees.

Related Standards

Professionals using ASTM D3019/D3019M-17(2024) may also reference the following related ASTM standards to guide testing, installation, and quality control:

• ASTM D6511/D6511M: Test Methods for Solvent Bearing Bituminous Compounds – essential for sampling and testing lap cement properties.
• ASTM D36/D36M: Test Method for Softening Point of Bitumen – referenced for evaluating cement residue softening points.
• Other Relevant Roofing Standards: ASTM maintains a range of standards on asphalt roofing materials, adhesives, and installation, supporting comprehensive quality compliance.

Keywords: ASTM D3019, lap cement, asphalt roll roofing, non-fibered, fibered, roofing adhesive, roofing standards, roofing materials, waterproofing, roof installation