JC/T 902-2025Organic Silicone Waterproofing Agent for Building Surfaces (English PDF)

1 Foreword

JC/T 902-2025 was issued by Ministry of Industry and Information Technology on 10 April 2025 and has been in force since 1 November 2025.

It replaces the earlier edition JC/T 902-2002.

The JC/T prefix marks a recommended standard. It is not law in itself: it becomes binding when a contract names it, when a regulation or a mandatory standard refers to it, or when a producer declares conformity with it.

2 Scope Preview

This standard specifies the classification and marking, requirements, test methods, inspection rules, and labeling, packaging, storage, transportation, and shelf life of organosilicon waterproofing agents for building surfaces. This document applies to organosilicon waterproofing agents for building surfaces using silanes and siloxanes as the main raw materials.

JC/T 902-2025 falls under ICS 91.120.30, in the field of construction materials and building.

This catalogue holds 579 other JC/T standards in that field.

In this catalogue, JC/T standards carry edition years from 1973 to 2026.

3 About this standard

Issued by: Ministry of Industry and Information Technology

Supersedes the earlier edition JC/T 902-2002.

4 Related standards

Other editions:

JC/T 902-2002 (earlier edition)

Standards on related subjects:

JC/T 1068-2008 — Waterproof materials for pitched roof Underlayments of self adhering polymer modified bituminous

GB/T 328.8-2007 — Test methods for building sheets for waterproofing -- Part 8: Bitumen sheets for waterproofing-tensile properties

GB/T 328.9-2007 — Test methods for building sheets for waterproofing -- Part 9: Plastic and rubber sheets for waterproofing-tensile properties

JC/T 864-2023 — Polymer Emulsion Architectural Waterproof Coating

JC/T 984-2011 — Polymer modified cement mortar for waterproof

5 Classification and status

International classification (ICS): 91.120.30

Chinese Standard Classification (CCS): Q 13

Prefix JC/T: recommended standard.