Insulated Glass Suppliers & Factory in Spain

High-Performance Architectural Glazing, Structurally Sealed Double & Triple Glazing Solutions Configured for Spain's Modern Building Code (CTE)

Main Product Classification

Our state-of-the-art production facility houses multiple advanced production lines, each equipped with cutting-edge technology. We deliver high-reliability insulated glass systems tailored to European building configurations.

Aluminium Window And Door

Aluminium Window And Door

Fireproof Glass

Fireproof Glass

Laminated Glass

Laminated Glass

Insulated Glass

Insulated Glass

About Guoxin Glass

Building Trust and Excellence for Over Two Decades

Jiangsu Guoxin Glass Co., Ltd. was founded in 2006 and has since grown into a leading enterprise in the glass industry, with a stable and successful track record spanning two decades. Our company has accumulated a wealth of experience in the research and development, production, and marketing of aluminum windows, fireproof Glass, laminated glass, and insulated glass. This expertise has allowed us to innovate and produce high-quality products that meet the diverse needs of our customers.

2006
Was Founded
20
Years R&D Experience
10+
Rich Product Ranges

Spanish Architectural Glazing Industry & Macro Dynamics

1. The Evolution of Spain's Building Code (CTE) & Thermal Performance Regulations

In Spain's current structural design landscape, the Código Técnico de la Edificación (CTE) dictates stringent directives regarding energy efficiency (specifically documents DB-HE1 on energy limitation and DB-HE4 on thermal insulation parameters). With Spain split into diverse meteorological climate zones (spanning Zone A in the warm southern Andalusia to Zone E in the cold mountainous terrains of Castile and León), specialized double and triple insulated glass units (IGUs) are no longer luxury components—they are mandatory structural elements.

To comply with maximum permitted thermal transmittance rates ($U$-values) which are capped as low as $1.8\text{ W/m}^2\text{K}$ in demanding northern locales, local developers require high-end Low-Emissivity (Low-E) coatings combined with inert gas cavities (typically filled with 90% Argon). For Mediterranean zones such as Barcelona and Valencia, solar control glass with reduced Solar Factor ($g$-value) parameters is key to minimizing structural cooling loads during peak summer periods.

CTE Compliance Parameter Checklist for Spain Insulated Glass

  • U-Value Target: Under $1.1 - 1.4\text{ W/m}^2\text{K}$ for modern energy-efficient residential and commercial builds in Madrid and cold interiors.
  • Solar Factor ($g$-value): Less than $0.35 - 0.40$ in southern areas to significantly cut down air conditioning expenses.
  • Acoustic Rating (Rw): Up to $45\text{ dB}$ attenuation in bustling metropolitan areas like Madrid Central.

2. Global Glass Manufacturing Paradigm and Spain's Supply Chain Integration

On a global scale, the structural glass market is pivoting rapidly toward complete decarbonization, circular economies, and low-embodied-carbon supply channels. Architects across Madrid, Seville, and Bilbao are now demanding verified Environmental Product Declarations (EPDs). By synthesizing advanced automation in China's top-tier production centers with regional distribution hubs across the Iberian peninsula, Guoxin Glass bridges this supply chain gap.

Our raw materials are processed via computerized tempering and automated gas filling lines, ensuring a durable double-barrier seal that protects against edge-seal failures—the leading cause of premature failure in high-humidity coastal zones like Malaga and Alicante.

3. Localized Application Profiles: Spain's Contemporary Projects

The applications for modern double-glazed units in Spain fall into three main archetypes:

  • High-Exposure Coastal Glass Walls: Demanding high resistance against saline erosion, wind loads, and thermal shock.
  • Urban Retrofit Initiatives: Upgrading vintage masonry structures in historic districts using narrow-profile insulated glazing systems to preserve facade aesthetics while maximizing thermal performance.
  • Commercial Curtain Wall Systems: Requiring high-strength structural glazing configurations utilizing SGP laminated interlayer glass coupled with high-efficiency spacer profiles.

4. Technical Roadmap & Future Developments

The transition toward building-integrated photovoltaics (BIPV), vacuum insulated glass (VIG) featuring ultra-low profiles, and chromogenic smart glass elements forms the technical trajectory of our R&D. Guoxin Glass is continuously innovating to deliver next-generation triple-glazed units featuring lightweight composite spacers that lower overall facade weight by up to 15% while improving edge-zone thermal values by 20% compared to traditional metallic spacers.

Technical Support

Get specialized support from our engineering department regarding glass thickness calculation, wind load analysis, and CTE compliance checks.

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Windows & Doors Systems

Engineered for seamless integration with Spanish thermal break frames (Rotura de Puente Térmico - RPT).

All Systems
Casement Window
Sliding Window
Sliding Door
Folding Door
Sliding Door System

Sliding Door Systems

Hinged Door System

Hinged Door Systems

Folding Door System

Folding Door Systems

Aluminium Sliding Window

Aluminium Sliding Windows

3D Laser Engraved Glass Series

Combining artistic expression with sub-surface optical laser engraving technologies for premium partitions and architectural highlights.

Municipal landscape Spain

Municipal Landscape Glass

Durable architectural scale installations crafted for public squares and landmarks.

Glass engraving series Spain

Glass Engraving Series

High-precision custom etching processes for bespoke corporate branding applications.

Gift ornament series Spain

Gift Ornament Series

Intricate internal structures laser fused into premium optical crystal structures.

Trophy and medal Spain

Trophies & Medals

Custom recognition rewards displaying dimensional depth and clarity.

Global Best Selling Architectures

Trusted globally, optimized for regional Spain performance parameters.

Fire Resistance Glass Spain

Fire Resistance Glass

Rated fire barrier glass solutions designed to keep profiles intact during thermal hazards.

Curved Tempered Glass Spain

Curved Tempered Glass

Thermally bent safety glass that offers structural strength combined with dynamic modern geometry.

SGP Laminated Glass Spain

SGP Laminated Glass

High-resistance DuPont SentryGlas interlayers providing optimal post-breakage load performance.

PVB Laminated Glass Spain

PVB Laminated Glass

Standard architectural safety configurations offering acoustic protection and UV filtering.

OEM & ODM Custom Design Solutions

Quality First, Customer First, and Credit-Based.

At Guoxin Glass, our production infrastructure allows for full configuration flexibility. Whether you require bespoke gas ratios, complex spacer layouts, or specialized shape parameters, our processing plant handles these needs dynamically.

Featured Projects Showcase

Demonstrated engineering expertise in iconic towers, public stations, and high-performance commercial facilities.

Teapot tower Spain

Teapot Tower

As the world's "largest purple clay pot shaped building", it features custom-bent glass and aluminum frameworks mapping intricate three-dimensional curvature.

Wuxi railway station Spain

Wuxi Railway Station

Renovated with thousands of laminated glass units to support structural loads and provide robust safety profiles in heavy traffic public hubs.

Nanjing Zifeng Tower Spain

Nanjing Zifeng Tower

This 450-meter skyscraper utilizes our high-performance double glazed insulated glass panels in its multi-layered unitized facade system.

Valode & Pistre Spain

Valode & Pistre

Implementing dynamic light predictive daylight algorithms combined with specialized solar control glass layers to eliminate traditional external blinds.

Hadi Teherani Architects Spain

Hadi Teherani Architects Project

Features high-spec triple-glazed units for optimum thermal efficiency and interior sound management, retrieving up to 80% of heat transfer.

Joy City Spain

Joy City Landmark

Equipped with intelligent smart glass systems, providing responsive color shifting based on sunlight angles and ambient temperature.

Depot Boijmans Van Beuningen Museum Spain

Depot Boijmans Museum

Using 15,000 square meters of high-efficiency reflective safety glass to create a mirrored exterior facade, blending seamlessly with the urban park.

BMW 4S SHOP Spain

BMW 4S Showroom

Employs expansive, heavy-duty structural tempered glass panels to optimize ambient light transmission and improve structural energy saving.

Customer Evaluation

We effectively recognize the needs of customers across diverse global regions.

Guoxin Glass Global Clients Map

Global Sales & Compliance Networks

Spain
Portugal
Italy
France
Germany
Norway
Sweden
Finland
Britain
Japan
USA
Canada

Strives to Better Serve Your Goals

The company has obtained rigorous ISO 9001:2015 certifications along with CE Marking, indicating adherence to European Standard EN 1279 for insulated glass units.

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ISO Certification Seal 1 ISO Certification Seal 2

Quality Inspections & User Cases

Ensuring complete product integrity through rigorous pre-shipment tests.

Material Testing Case 1
Material Testing Case 2
Material Testing Case 3
Material Testing Case 4

Technical News & Information

As a leading source manufacturer, we take pride in supplying top-notch glass doors and windows to customers around the globe.

Fireproof glass vs ordinary glass

What is the difference between fireproof glass and ordinary glass?

To help you pick compliant, cost-effective and safe glass for your projects, we’ll break down the differences between fireproof glass, fireproof materials glass, fireproof coating glass and ordinary options.

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Safety advantages of laminated glass

What safety advantages does Laminated Glass have in building use?

I receive many customer inquiries every day - which type of construction glass is both practical and safe? In fact, glass has long been indispensable in modern buildings.

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Casement window performance options

Which has better cost performance between broken bridge aluminum and plastic steel for Casement Window?

Most homeowners struggle with a common question when purchasing casement windows: should they choose broken bridge aluminum or plastic steel materials?

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Frequently Asked Questions (FAQ)

Detailed technical answers addressing core search queries about insulated glass specifications and standards in Spain.

What are the exact U-value limits required for insulated glass in Spain under CTE DB-HE1? +
Under the CTE DB-HE1 directives, maximum thermal transmittance values ($U$-values) are calculated based on Spain's climate zones, spanning Zones A through E. For northern interior zones like Burgos (Zone E), structural values below $1.8\text{ W/m}^2\text{K}$ are demanded for frame/glass structures. Our Low-E insulated glass units easily reach $1.1\text{ W/m}^2\text{K}$ using argon fill configurations, ensuring compliance.
Why is Argon gas preferred over standard air in glass cavities? +
Argon is an inert gas with significantly lower thermal conductivity than air. Filling the space between glass sheets with 90% Argon minimizes convective heat transfer within the cavity, reducing the overall thermal transmittance rate ($U$-value) of the pane from approximately $2.7\text{ W/m}^2\text{K}$ down to $1.1 - 1.3\text{ W/m}^2\text{K}$.
What is the average lifespan of double-sealed insulated glass units? +
High-quality insulated glass manufactured under EN 1279 standards features a primary butyl (PIB) seal to resist moisture transmission, combined with a secondary structural silicone or polysulfide seal. With correct installation and appropriate edge water drainage, these units hold an expected service life of 20 to 25 years.
Can you supply large-format or Jumbo-size glass units to construction sites in Spain? +
Yes, our factories produce customized jumbo-size tempered and laminated glass panels up to $3.3\text{m} \times 12\text{m}$ sizes. We coordinate specific logistics and packaging setups using reinforced steel A-frames to ensure zero damage during international shipping and direct delivery.

Explore Full Range of Glazing Products

Fully compliant with European building certifications. Explore original product documents via direct links below.

Additional Architectural Glass Options