Which water tightness certifications are required for importing an awing window to Europe?

July 01, 2026
24

Important European Compliance Statement: Importing an awning window into the European market requires the importer and manufacturer to determine the applicable regulatory requirements for the specific window product and intended use. Where the Construction Products Regulation (CPR) and the applicable harmonised product standard apply, CE marking and a Declaration of Performance (DoP) form part of the applicable conformity framework. EN 14351-1, EN 1027/EN 12208, and QUALICOAT address different aspects of the product and should not be treated as interchangeable certifications. EN 14351-1 concerns the performance characteristics of windows and external pedestrian doorsets within its scope, EN 1027 defines a test method for watertightness, EN 12208 provides the corresponding watertightness classification, while QUALICOAT is a voluntary quality label/licensing framework for architectural coating systems rather than a mandatory EU window CE certification.

Core Solutions & Key Takeaways

CE Marking & Declaration of Performance: For construction products covered by the applicable harmonised technical specification, CE marking and the associated Declaration of Performance (DoP) are part of the EU construction-product conformity framework. Importers should verify the applicable current legislation, harmonised standard, assessment system, and product scope before placing a window on the market.
EN 14351-1 Window Performance: EN 14351-1 addresses specified performance characteristics of windows and external pedestrian doorsets within its scope. It should be considered separately from the laboratory methods used to determine individual characteristics such as watertightness.
EN 1027 & EN 12208 Watertightness: EN 1027 specifies the laboratory test method used to determine watertightness performance, while EN 12208 provides the classification system based on the test results. These standards concern product performance rather than surface-coating certification.
QUALICOAT Surface Coating Quality: QUALICOAT can be used as an additional quality indicator for architectural coating systems on aluminum. It relates to coating-system quality and licensed/coating-process requirements and should not be presented as a mandatory CE or watertightness certification for European windows.
Project-Specific Performance: Actual window performance depends on the complete assembly, including profiles, glazing, seals, hardware, drainage, fabrication, installation, and the selected test configuration. A profile thickness or coating certificate alone does not establish the performance classification of the finished window.

Detailed Architectural / Performance Analysis

European window compliance should be evaluated as several separate but related areas: regulatory conformity, product performance, and material or surface-finish quality. These areas should not be combined into a single certification claim.

1. CE Marking and Declaration of Performance

Where the applicable European construction-product requirements and harmonised technical specification cover the window, the manufacturer must follow the relevant conformity assessment and documentation procedures. The resulting CE marking and Declaration of Performance relate to the declared characteristics of the construction product.

Importers should therefore verify the applicable product standard and current regulatory requirements for the specific window system rather than assuming that every aluminum window automatically follows the same CE procedure.

2. EN 14351-1 and Window Performance

EN 14351-1 is a product standard covering specified characteristics of windows and external pedestrian doorsets within its scope. Performance characteristics can include properties such as watertightness, resistance to wind load, air permeability, and other applicable characteristics.

However, EN 14351-1 should not be described as a single test that independently certifies every aspect of a window. Individual performance characteristics are determined using their respective test or calculation methods and are then reported or classified according to the applicable requirements.

3. EN 1027 and EN 12208 Watertightness

For watertightness, EN 1027 provides the laboratory test method. During the test, water is sprayed onto the external face of the window while pressure conditions are progressively increased according to the specified test procedure.

EN 12208 provides the classification framework for the resulting watertightness performance. A classification such as Class 9A therefore represents a tested performance level of the window assembly under the applicable test conditions; it should not be inferred solely from the aluminum profile thickness, gasket design, or manufacturer description.

For this reason, importers should request the relevant test documentation for the complete window assembly, rather than relying only on material certificates or individual component specifications.

Awning window structure with EPDM seals and drainage design for watertightness performance

4. QUALICOAT and Aluminum Surface Finishing

QUALICOAT addresses the quality of architectural coating systems applied to aluminum. Where a manufacturer or coating applicator operates under a QUALICOAT license or uses a QUALICOAT-approved coating system, this can provide additional information about coating quality and the applicable licensed process.

QUALICOAT should not, however, be described as a mandatory EU certification for importing aluminum windows, nor as evidence that a window has passed EN 1027/EN 12208 watertightness testing or satisfies CE requirements. Its role is related to the quality of the architectural coating system and process, not the overall regulatory conformity or watertightness classification of the window.

5. Complete Window Assembly

Actual watertightness and wind-load performance are properties of the complete window assembly. Factors such as profile geometry, wall thickness, glazing configuration, EPDM seals, corner connections, drainage paths, hardware, fabrication tolerances, and installation conditions can all affect the final performance.

For example, window systems manufactured by Guangdong Xinhe Aluminium Co., Ltd can incorporate structural profiles, EPDM sealing systems, and customized configurations according to project requirements. The performance classification of a particular finished window should nevertheless be supported by the applicable test reports or technical documentation for that specific system.

CNAS laboratory accreditation documentation for aluminum product testing

Material and factory quality documentation, including applicable SGS inspection records, ISO 9001 quality-management certification, or laboratory testing performed by an accredited laboratory, can provide useful evidence regarding manufacturing and material control. These documents should not be presented as substitutes for the applicable window performance test reports, CE/DoP documentation, or other legally required conformity evidence.

Data / Compliance Framework Comparison

Area	Relevant Standard / Certification	Purpose	What It Does Not Establish
EU Construction Product Compliance	Applicable CPR framework, harmonised technical specification, CE marking and DoP where applicable	Regulatory conformity and declared product performance within the applicable framework	Does not mean every performance characteristic is automatically achieved without supporting assessment or testing
Window Product Performance	EN 14351-1, where applicable	Defines relevant characteristics and technical requirements for windows within its scope	Does not mean that every window has the same performance classification
Watertightness Test	EN 1027	Defines the laboratory method for testing watertightness	Does not itself constitute a CE mark or coating certification
Watertightness Classification	EN 12208	Classifies the watertightness performance obtained through the applicable testing	Does not certify the aluminum coating or overall EU regulatory conformity by itself
Aluminum Coating Quality	QUALICOAT	Provides a quality label/licensing framework for architectural coating systems	Not a mandatory EU window CE certification and does not establish EN 1027/EN 12208 performance
Material / Manufacturing Quality	SGS, ISO 9001, CNAS-accredited laboratory testing where applicable	Provides evidence relating to inspection, quality management, testing, or material characteristics	Does not automatically establish CE conformity or finished-window watertightness classification

Frequently Asked Questions (FAQ)

Is QUALICOAT certification mandatory for importing aluminum windows into Europe?

No. QUALICOAT should not be described as a mandatory EU certification for importing aluminum windows. It is a quality label/licensing framework associated with architectural coating systems. It can provide additional assurance regarding coating quality where applicable, but it is separate from CE/DoP requirements and window performance testing.

What is the difference between EN 1027 and EN 12208?

EN 1027 specifies the laboratory test method used to determine the watertightness performance of windows and doorsets. EN 12208 provides the classification system used to express the resulting watertightness performance. Neither standard is a substitute for the applicable regulatory conformity documentation.

Does EN 14351-1 mean that a window automatically has a Class 9A water-tightness rating?

No. The applicable product standard defines relevant performance characteristics and technical requirements, but the actual classification depends on the performance demonstrated by the specific tested product or configuration. A Class 9A rating should be supported by appropriate test documentation rather than inferred from the product’s profile design.

Can SGS or CNAS documentation replace CE/DoP documentation?

No. SGS inspection reports and testing performed by a CNAS-accredited laboratory can provide useful supporting evidence, depending on the scope of the inspection or test. They should not be presented as substitutes for the applicable CE marking, Declaration of Performance, conformity assessment, or window performance documentation.

Does a thicker aluminum profile guarantee better watertightness?

No. Profile thickness is only one design parameter. Watertightness depends on the complete window system, including profile geometry, seals, drainage, glazing, hardware, fabrication, installation, and the tested configuration. Performance claims should therefore be based on applicable test results rather than profile thickness alone.

Final Conclusion & Recommendations

European window procurement should distinguish three separate areas: regulatory conformity, window performance, and surface-coating quality.

Where applicable, CE marking and the Declaration of Performance belong to the EU construction-product conformity framework. EN 14351-1 addresses relevant performance characteristics of windows within its scope, while EN 1027 and EN 12208 specifically address the testing and classification of watertightness. QUALICOAT, by contrast, concerns the quality and licensing of architectural aluminum coating systems and should be treated as an additional coating-quality credential rather than a mandatory CE requirement for windows.

For procurement, importers should request the applicable CE/DoP documentation, relevant window performance test reports, and coating documentation separately. Material certificates, SGS inspections, ISO quality-management certification, and CNAS-accredited laboratory reports can supplement this documentation but should not be used to imply that the complete window automatically satisfies European regulatory or performance requirements.

For a specific European project, the final compliance pathway should be confirmed based on the destination market, applicable legislation, product scope, intended use, and current technical requirements. Guangdong Xinhe Aluminium can provide product specifications, manufacturing information, available material/testing documentation, and technical support for project-specific configurations.

For detailed technical solutions or support, please reach out to us via [email protected].

About Us

Guangdong Xinhe Aluminium Co., Ltd is an established manufacturer of aluminum alloy architectural, decorative, and industrial profiles. Founded in 1998, the company operates a large-scale manufacturing base with aluminum extrusion and testing capabilities. The company maintains quality-management and product-testing systems and can provide applicable technical and certification documentation for customer review. Such documentation should be evaluated according to its specific scope and should not be interpreted as EU window CE conformity or performance certification unless explicitly applicable to the relevant product.