ASTM C898/C898M-25 PDF
Name in English:
St ASTM C898/C898M-25
Name in Russian:
Ст ASTM C898/C898M-25
Original standard ASTM C898/C898M-25 in PDF full version. Additional info + preview on request
Full title and description
ASTM C898/C898M-25 — Standard Guide for Use of High Solids Content, Cold Liquid‑Applied Elastomeric Waterproofing Membrane with Separate Wearing Course. Provides guidance on the use of high‑solids, cold, liquid‑applied elastomeric waterproofing membranes (meeting criteria in Specification C836/C836M) for building decks over occupied space where the membrane is protected by a separate wearing course.
Abstract
This guide discusses design considerations, selection, and typical application contexts for cold liquid‑applied elastomeric waterproofing membranes with a separate wearing course. It clarifies limitations (not a work specification), unit systems (SI and inch‑pound used independently), and references related application guidance for vertical and below‑grade conditions.
General information
- Status: Current (published 2025; amended by C898/C898M‑25a in late 2025).
- Publication date: 01 February 2025 (original); amendment issued 03 December 2025.
- Publisher: ASTM International.
- ICS / categories: 83.060; 91.100.50 (rubber; binders/sealing materials).
- Edition / version: C898/C898M‑25 (with subsequent amendment C898/C898M‑25a).
- Number of pages: 14 pages.
Scope
The standard describes the use of a high‑solids, cold liquid‑applied elastomeric waterproofing membrane (that meets Specification C836/C836M) in systems subject to hydrostatic pressure for building decks over occupied space where a separate protective wearing course covers the membrane. It is intended as a guide — not a prescriptive installation specification — and notes that SI and inch‑pound units are to be used independently.
Key topics and requirements
- Guidance for selection and use of high solids content, cold liquid‑applied elastomeric membranes.
- Requirement that the membrane meet criteria in Specification C836/C836M when used in the described application.
- Application context limited to building decks over occupied space with a separate wearing course and systems exposed to hydrostatic pressure.
- Advisory statements on long‑term performance, difficulty of locating leaks under a wearing course, and the need for appropriate safety, health, and environmental practices.
- Reference to related guidance (for below‑grade and vertical surfaces) such as Guide C1471/C1471M.
Typical use and users
Intended for designers, specifiers, roofing and waterproofing contractors, building envelope consultants, and facility managers who evaluate or install liquid‑applied elastomeric waterproofing systems on occupied‑space decks. Users consult the guide to understand appropriate uses, limitations, and interactions with wearing courses and to align membrane selection with Specification C836/C836M.
Related standards
Normative and related documents commonly referenced with this guide include ASTM C836/C836M (Specification for High Solids Content, Cold Liquid‑Applied Elastomeric Waterproofing Membrane), Guide C1471/C1471M for below‑grade/vertical applications, and other ASTM roofing and waterproofing standards addressing wearing courses, adhesives, and substrate preparation.
Keywords
waterproofing; elastomeric membrane; high solids; cold liquid‑applied; wearing course; deck waterproofing; hydrostatic pressure; C836; building decks; membrane protection.
FAQ
Q: What is this standard?
A: ASTM C898/C898M‑25 is an ASTM guide that provides guidance on using high solids, cold liquid‑applied elastomeric waterproofing membranes covered by a separate wearing course for building decks over occupied spaces.
Q: What does it cover?
A: It covers intended uses, design and selection considerations, limitations (it is a guide rather than an installation specification), the requirement that the membrane meet C836/C836M criteria, and considerations for long‑term performance and repairability when a separate wearing course is used.
Q: Who typically uses it?
A: Designers, specifiers, roofing/waterproofing contractors, building envelope consultants, and facility managers involved with deck waterproofing projects use this guide to inform material selection and system design.
Q: Is it current or superseded?
A: The C898/C898M‑25 edition is current (published 01 Feb 2025) and has been amended (C898/C898M‑25a issued in late 2025). Users should check for the latest amendments or corrigenda before using the document.
Q: Is it part of a series?
A: Yes — it is part of ASTM’s roofing and waterproofing guidance and is linked to related specifications and guides (for example C836/C836M and Guide C1471/C1471M). It also replaces earlier editions (previously C898/C898M‑09) as part of the ASTM document history.
Q: What are the key keywords?
A: waterproofing, elastomeric membrane, high solids, cold liquid‑applied, wearing course, deck, hydrostatic pressure, C836.