ASTM D1227/D1227M-13(2024) PDF

Overview

ASTM D1227/D1227M-13(2024) - Standard Specification for Emulsified Asphalt Used as a Protective Coating for Roofing provides internationally recognized requirements for emulsified asphalt products intended for use as protective coatings on built-up roofs and other exposed surfaces, especially those with inclines of not less than 4% or 42 mm/m (1/2 in./ft). This standard, developed by ASTM International, ensures the performance, consistency, and safety of emulsified asphalt coatings in roofing applications. The specification also outlines classification, physical properties, and conformity requirements for asphalt emulsions, supporting both contractors and manufacturers in delivering reliable roof protection.

Key Topics

1. Classification of Emulsified Asphalt:

• Types:
  • Type I: Contains fillers or fibers, including asbestos.
  • Type II: Contains fillers or fibers other than asbestos.
  • Type III: No fibrous reinforcement.
• Classes:
  • Class 1: Prepared with mineral colloid emulsifying agents.
  • Class 2: Prepared with chemical emulsifying agents.

2. Physical Property Requirements:

• Consistency for application in thick films, using brush, mop, or spray, without the need for thinning or heating.
• Uniform, smooth emulsion without excessive separation or settlement.
• Ability to bond to both damp and dry roofing surfaces.
• Resilience on inclined or vertical surfaces, preventing rundown during or after application.
• Physical performance parameters such as:
  • Weight per gallon/litre
  • Residue by evaporation
  • Ash content of residue
  • Water content
  • Flammability (no tendency to flash or ignite)
  • Firm set time
  • Heat and flexibility resistance
  • Water resistance and flame behavior

3. Inspection, Testing, and Certification:

• Sampling and testing compliance with referenced methods.
• Manufacturer’s certification available upon request.
• Identification and traceability by product type, class, manufacturer, and lot code.
• Compliance with all packaging, marking, and transport requirements.

Applications

Emulsified asphalt roof coatings specified by ASTM D1227/D1227M-13(2024) are widely used in:

• Built-up roofing systems: Providing waterproofing and weather-resistant layers.
• Exposed roof surfaces: Protecting against UV, water ingress, and environmental wear.
• Sloped or inclined surfaces: Ensuring the coating’s integrity on roofs with a pitch of 4% or greater.
• Maintenance and repair: Enhancing the service life of existing asphalt roofing by recoating with approved emulsified asphalt products.
• Industrial, commercial, and governmental buildings: Specifying products tested and certified for compliance, including those approved for U.S. Department of Defense projects.

These coatings are pivotal in extending roof lifespans, resisting water, preventing blistering, and maintaining flexibility under varying temperatures.

Related Standards

For comprehensive roofing protection and material compatibility, consider these related ASTM standards:

• ASTM D2939: Test Methods for Emulsified Bitumens Used as Protective Coatings (withdrawn in 2012, provided formerly referenced testing methods)
• Other ASTM D08 Committee Standards: Covering roofing, waterproofing, and liquid-applied coatings
• International guidelines: Developed according to World Trade Organization TBT Committee principles for international trade and acceptance.

Keywords: emulsified asphalt, protective roof coating, ASTM D1227, built-up roofing, asphalt emulsion, roof protection standard, water resistance, roofing material specification