ISO 15686-2:2012

Overview

ISO 15686-2:2012 - Buildings and constructed assets - Service life planning - Part 2: Service life prediction procedures - defines a generic, systematic methodology for predicting the service life of building components based on their technical and functional performance. It provides a framework, principles and reporting requirements for Service Life Prediction (SLP) studies and clarifies what is outside its scope (for example, service life limits caused by obsolescence or other non-measurable/unpredictable states).

Key topics and technical requirements

• SLP methodology: Iterative approach that identifies required information, selects or develops exposure/test procedures, conducts testing, interprets results and reports predicted service life (PSLC) or predicted service life distribution (PSLDC).
• Types of prediction: Accelerated short‑term exposure, interpolation/extrapolation from similar components or environments, and extrapolation from short‑term in‑use data.
• Exposure programmes: Guidance on long‑term and short‑term ageing exposure, including accelerated tests. Emphasis on defining relevant agents (e.g., moisture, UV, mechanical load) and agent intensity.
• Performance metrics: Use of performance characteristics, degradation indicators, dose–response functions and terminal critical properties to quantify aging and failure.
• Uncertainty and statistics: PSLDC should be expressed as a distribution (expectation value and standard deviation), not just a single number.
• Complementary techniques: Incorporation of FMEA (failure mode and effect analysis) where appropriate.
• Quality controls: Requirements for pre‑testing, critical review processes and standardized reporting to ensure reproducibility and transparency.
• Terminology and references: Aligns with ISO 15686-1 (general principles) and ISO 15686-8 (reference service life), plus related vocabulary standards.

Practical applications and users

• Manufacturers - develop evidence-based durability data to support product claims and warranties.
• Test houses and approval bodies - design and validate exposure programmes and service life tests.
• Standards developers - incorporate SLP procedures and reference service lives into product standards.
• Asset owners, facility managers and LCA practitioners - use predicted service life data in life‑cycle costing, maintenance planning, environmental product declarations (EPDs), audits and performance reviews.
• Designers and specifiers - select materials/components based on quantified in‑use expectations and sensitivity to service environments.

Related standards

• ISO 15686-1 - General principles and framework for service life planning
• ISO 15686-7 and ISO 15686-8 - Performance evaluation feedback and reference service life/estimation
• Other referenced standards include ISO 6707-1 (vocabulary) and ISO 6241 (performance standards principles).

ISO 15686-2:2012 is essential for robust, reproducible service life prediction, improving maintenance planning, cost forecasting and sustainable asset management through standardized, evidence‑based durability assessment.