ASTM C898/C898M is the standard guide for the use of a high solids content, cold liquid-applied elastomeric waterproofing membrane with a separate wearing course. It helps guide product selection, application planning, and performance expectations for waterproofing systems where the membrane is installed as part of a layered assembly. This ASTM standard is important for projects that need reliable technical direction on membrane use, interface with the wearing course, and consistent quality control.

What is ASTM C898/C898M?

This standard is a guide focused on a specific type of waterproofing system: a high solids content, cold liquid-applied elastomeric membrane used with a separate wearing course. In practical terms, ASTM C898/C898M provides a technical reference for how this membrane type is generally intended to be used and evaluated. It supports architects, specifiers, contractors, and product teams who need a common basis for understanding system compatibility, installation approach, and expected service conditions.

Where is ASTM C898/C898M used?

ASTM C898/C898M is commonly used in specifications and project documents for waterproofing assemblies where a liquid-applied elastomeric membrane is paired with a separate protective or traffic-bearing wearing course. It may be relevant for decks, plazas, or other horizontal surfaces where waterproofing performance and surface durability both matter. The guide is also useful during product review, submittal preparation, and installation planning when a system must be coordinated with adjacent materials and construction details.

Why is ASTM C898/C898M important?

This guide matters because it gives teams a shared technical basis for selecting and applying a specialized waterproofing system. Using ASTM C898/C898M can help improve consistency in procurement, product comparison, and quality control while reducing the risk of mismatched components or unclear installation expectations. For standards-based projects, it also supports clearer communication among designers, contractors, and suppliers when evaluating membrane performance and system suitability.

• High solids content membrane guidance
• Cold liquid-applied elastomeric system focus
• Separate wearing course coordination
• Specification and quality control support
• Waterproofing system evaluation reference