SASO Tightens Duct Fire Rating in Saudi Arabia: ASTM E84 Class A Mandatory from May 15, 2026

Saudi Arabia’s Standards, Metrology and Quality Organization (SASO) has issued an urgent technical notice mandating ASTM E84 Class A fire performance for metal duct systems used in commercial and industrial buildings, effective May 15, 2026. This change directly affects exporters, manufacturers, and supply chain stakeholders engaged with the Saudi HVAC and building infrastructure markets — particularly those relying on EN 13501-3 B-s1,d0 certification.

Event Overview

On May 14, 2026, SASO published a technical bulletin stating that, effective May 15, 2026, all metal duct systems intended for commercial or industrial building applications in Saudi Arabia must pass ASTM E84 with a flame spread index ≤25 and smoke-developed index ≤450 (Class A). Compliance requires a Certificate of Conformity (CoC) issued by a SASO-authorized conformity assessment body. Products previously certified to EN 13501-3 B-s1,d0 — including many exported from China — will no longer be accepted for customs clearance.

Industries Affected

Direct Exporters and Trading Companies

These entities face immediate customs rejection risk if shipments lack valid ASTM E84 Class A CoC. Since EN 13501-3 B-s1,d0 is not accepted under the new requirement, previously compliant inventory may become non-admissible unless retested and recertified — potentially disrupting order fulfillment and contract obligations.

Manufacturers of Metal Duct Systems

Manufacturers supplying ductwork to Saudi projects must now ensure product design, material selection (e.g., insulation type, liner composition, joint sealing), and surface treatment meet ASTM E84 Class A thresholds. Unlike EN 13501-3, which evaluates system components separately, ASTM E84 assesses full-scale duct assemblies under standardized flame exposure — requiring updated test protocols and documentation.

Suppliers of Duct Insulation and Liners

Because ASTM E84 Class A performance depends heavily on internal lining and insulation materials (e.g., fiberglass, mineral wool, polymer-based coatings), suppliers of these components are indirectly affected. Their material certifications — especially fire-retardant additives and substrate compatibility — now influence final duct system compliance and require traceability to SASO-recognized testing reports.

Conformity Assessment and Certification Service Providers

Only SASO-authorized bodies may issue the required CoC. This restricts certification options and may extend lead times, especially for applicants unfamiliar with ASTM E84 test setup, reporting formats, or SASO’s submission requirements (e.g., sample size, installation method, pre-test conditioning).

Key Actions for Enterprises and Practitioners

Monitor official SASO communications for implementation clarifications

While the effective date is confirmed, SASO has not yet published detailed guidance on acceptable test lab accreditation pathways, transitional arrangements for pending shipments, or whether partial exemptions apply to retrofit or maintenance projects. Stakeholders should track SASO’s official portal and authorized notification channels for updates.

Identify and prioritize high-risk product lines and shipment batches

Enterprises should audit current export SKUs destined for Saudi Arabia — especially those previously cleared under EN 13501-3 B-s1,d0 — to determine which require retesting. Priority should be given to products with tight delivery windows or contractual penalties tied to customs clearance timelines.

Distinguish between regulatory signal and operational readiness

The May 15, 2026 deadline is binding, but actual enforcement at ports may depend on customs training, lab capacity, and documentation verification workflows. Analysis shows early-stage implementation may involve phased scrutiny; however, assuming leniency carries material compliance risk. Pre-clearance validation with SASO-authorized bodies is advisable before shipping.

Initiate coordination with testing labs and certification partners now

ASTM E84 testing requires physical duct assembly samples installed per standard configuration — often involving multi-day exposure cycles and post-test analysis. Lead times for scheduling, testing, and CoC issuance may exceed four weeks. Enterprises should engage SASO-authorized labs without delay and confirm sample submission deadlines aligned with planned shipments.

Editorial Perspective / Industry Observation

Observably, this update reflects SASO’s broader alignment with U.S.-origin fire safety benchmarks — particularly for life-safety-critical building elements. It is less a one-off revision and more a structural shift toward harmonized, assembly-level fire performance validation. Analysis shows that while EN 13501-3 remains widely used across GCC markets, Saudi Arabia’s move signals growing divergence in regional conformity expectations. From an industry perspective, this underscores the need to treat fire classification not as a static product attribute, but as a context-dependent system requirement shaped by end-market regulation. Continued monitoring is warranted, as other Gulf Cooperation Council members may follow suit — though no such announcements have been made to date.

This notice marks a definitive compliance inflection point for metal duct exports to Saudi Arabia — not merely a procedural update, but a material redefinition of market access criteria. It should be understood primarily as an enforceable regulatory threshold, not a voluntary upgrade. Current preparedness hinges less on technical feasibility and more on timely coordination across manufacturing, testing, and certification touchpoints.

Source: Saudi Standards, Metrology and Quality Organization (SASO), Technical Bulletin issued May 14, 2026. Note: Implementation details — including lab authorization status, transitional provisions, and enforcement scope — remain subject to ongoing official clarification and are recommended for continuous monitoring.