Export-Grade Door & Window Portfolio
Standard & Custom Systems Specified for Overseas Projects
Engineered for high wind pressure, coastal salt air durability, thermal efficiency, and seamless mesh integration.
Vertical Sliding Hung Aluminum Alloy Modern Kitchen & Basement Waterproof Security Hopper Window
ZEKIN Aluminum Double House Front Entry Luxury Glass Door Anti-theft Front Entry Double Exterior Doors Double Entry Door
USA Certified Energy-Saving Aluminum Casement Door With Blinds Inside Grill Design Double Pane Aluminum Door
Factory Custom Aluminum Exterior Armored Security Doors Anti Theft Front Entry Door for Home Entry Door
LongTai Best Selling Aluminum Grille Garage Door Powder Coated Surface Modern Aesthetic Commercial Use
Aluminium Windows and Doors Factory Produce American Certification NFRC NOA Hurricane Impact Glass Aluminium Sliding Door System
Factory Custom Aluminum Sliding Window with Grill Design Tempered Glass for Modern House Commercial Use
Barcelona Architectural Technical White Paper
Engineering Aluminium Net Sliding Doors for the Catalan Microclimate
Balancing Mediterranean indoor-outdoor living, thermal efficiency, saline air resistance, and pest management in coastal Spain.
15+
Years Engineering Expertise
10,000m²
Foshan Production Facility
Uw < 1.4
Thermal U-Value Standard
100%
EU CE & EN Compliance
Why Barcelona Demands Specialized Net Sliding Door Systems
The Greater Barcelona real estate market—spanning from high-density urban residential apartments in L'Eixample and Poblenou to luxury coastal estates in Sitges, Castelldefels, and Maresme—presents a unique set of architectural requirements. Properties in Catalonia experience over 2,500 hours of sunlight annually combined with high relative humidity and salty marine breezes from the Balearic Sea.
Traditional single-pane sliding doors or non-thermal aluminium profiles lead to severe interior solar heat gain during hot summer months and condensation bridging in winter. Furthermore, the coastal breeze brings insects, making integrated flyscreen sliding nets (mosquiteras correderas integradas) an essential building requirement rather than an optional add-on.
The Direct Source Advantage from Foshan, China
Sourcing direct from established manufacturers like Karon Window & Door Co., Ltd. in Foshan allows Catalan real estate developers, architectural firms, and building contractors to cut supply chain costs by up to 35% without sacrificing technical performance.
By engineering systems with heavy-duty 6063-T6 extruded aluminium alloys, multi-chambered polyamide thermal break strips (PA66GF25), marine-grade stainless steel high-visibility mesh, and Qualicoat-certified anti-corrosion surface coatings, Foshan suppliers deliver turnkey systems compliant with Spain’s rigid Código Técnico de la Edificación (CTE DB-HE / DB-HS) standards.
Structural Integrity & Material Science
Technical Breakdown of Integrated Net Sliding Door Systems
A look into the structural elements engineered to withstand sea salt corrosion, high wind pressures, and intense UV radiation.
6063-T6 Aluminium Profiles
Primary extrusion profiles utilize primary-grade 6063-T6 aluminium with frame wall thicknesses between 1.6mm and 3.0mm. This delivers structural resistance against wind loads reaching Class C5 under EN 12210 testing—ideal for oceanfront balconies.
Polyamide PA66GF25 Thermal Break
Equipped with 24mm to 34mm fiberglass-reinforced polyamide insulating strips that physically separate outer and inner aluminium sections. Reduces overall frame heat transfer, achieving U-values as low as 1.3 W/m²K to comply with Spanish energy CTE DB-HE guidelines.
High-Visibility 316 Stainless Mesh
Integrated sliding net panels feature 0.8mm marine-grade AISI 316 stainless steel wire mesh or high-transparency fiberglass micro-mesh. Provides intrusion protection, pest exclusion, and high airflow without obstructing Mediterranean coastal views.
Qualicoat Seaside Surface Treatment
Surface finishing includes AkzoNobel powder coating or anodizing with film thickness exceeding 25 microns. Tested under ASTM B117 salt spray for over 3,000 hours to eliminate blistering, peeling, or corrosion caused by aggressive marine air.
Multi-Track & Monorail Configurations
Available in 2-track, 3-track, and 6-track layouts with concealed flush bottom tracks. Allows multi-panel sliding configurations (2-panel, 3-panel, or 4-panel pocket doors) with an independent track for smooth sliding net operation.
Multi-Point Security Locks & Hardware
Fitted with German SIEGENIA, HOPO, or Sobinco multi-point locking mechanisms. Heavy-duty stainless steel rollers support panel weights up to 400kg while guaranteeing smooth sliding performance over tens of thousands of cycles.
Targeted Local Application Scenarios
Optimized for Diverse Catalan Architectural Projects
From historic apartment renovations in central Barcelona to modern cliffside villas along the Costa Brava.
1. Historic Retrofits in Eixample & Ciutat Vella
Context: Renovation of 19th-century Catalan modernist apartments featuring high ceilings, narrow balcony openings, and strict exterior aesthetic regulations.
Solution: Custom ultra-slim thermal break net sliding doors designed to fit existing structural masonry openings. Powder-coated in custom RAL finishes (such as dark bronze or matte black) to preserve architectural heritage while boosting sound insulation against urban traffic noise (Rw up to 42 dB).
2. Coastal Luxury Villas in Sitges & Maresme
Context: Modern luxury residential homes facing direct sun, salt air, and high coastal winds along the Balearic coastline.
Solution: Lift-and-slide double and triple-track aluminium door systems with integrated stainless steel anti-theft security mesh. Enables floor-to-ceiling glass expanses (up to 3.5 meters panel height) with effortless sliding action, zero threshold options, and extreme weatherproofing against sea storms.
3. High-Rise Apartments in Diagonal Mar & Poblenou
Context: High-density modern apartment complexes with wide balcony terraces susceptible to elevated wind pressures.
Solution: Pocket-sliding aluminium net door systems where glass and screen panels slide cleanly into wall cavities. Designed with low-E insulated glass units (6mm Low-E + 16Ar + 6mm Tempered) to reduce energy loads while keeping balconies bug-free when enjoying evening breezes.
Regulatory Compliance & Engineering Data
Spanish CTE Standards vs. KARON System Benchmark
Ensuring imports meet or exceed the mandatory building requirements (Código Técnico de la Edificación) for Climate Zone C2 (Barcelona area).
| Performance Indicator | Spanish CTE Requirements (Zone C2) | KARON Aluminium Net Sliding Door System | Architectural Benefit for Projects |
|---|---|---|---|
| Thermal Transmittance (Uw) | Uw ≤ 2.1 W/m²K | Uw = 1.3 - 1.6 W/m²K | Exceeds energy efficiency targets, lowering heating & cooling utility expenses. |
| Air Permeability (EN 12207) | Class 2 or Class 3 | Class 4 (Highest Rating) | Eliminates drafts, air leaks, and heat loss in high-rise coastal developments. |
| Water Tightness (EN 12208) | Class 7A (300 Pa) | Class E900 (900 Pa) | Prevents water ingress during heavy torrential Mediterranean rainstorms. |
| Wind Load Resistance (EN 12210) | Class C3 | Class C5 (2000 Pa) | Guarantees structural safety for large-span beachfront openings. |
| Acoustic Insulation (Rw) | Rw ≥ 32 dB | Rw = 38 dB - 44 dB | Provides quiet indoor comfort in lively city centers like Barcelona. |
| Anti-Corrosion Standard | Qualicoat Standard | Qualicoat Seaside (C5 Marine Grade) | Prevents salt degradation, frame discoloration, and surface oxidation. |
Factory Authority & Supply Chain Reliability
Why Leading European Builders Partner with KARON
A standardized 10,000 m² Foshan factory delivering engineering support, pre-assembly verification, and global export packaging.
Dedicated Shop Drawing Engineering
Before production starts, our structural engineering team reviews architectural window schedules and creates detailed CAD/BIM shop drawings. We double-check structural wind loads, wall anchoring details, frame drain paths, and threshold clearances tailored to Spanish installation methods.
Strict 100% Pre-Assembly & Quality Inspection
Every customized sliding door order undergoes complete trial assembly in our Foshan workshop prior to packing. We inspect sash squareness, smooth roller glide, multi-point lock alignment, sealant integrity, and flyscreen tension so site assembly in Spain runs smoothly.
Export Wooden Crate Packaging & Ocean Logistics
Window frames and double-glazed units are packaged using protective films, foam corner guards, and fully enclosed IPPC-stamped fumigated plywood crates. We arrange ocean freight directly from Guangzhou or Shenzhen ports straight to the Port of Barcelona (Port de Barcelona) with streamlined customs documentation.
Verified International Certification Portfolio
KARON products carry international credentials including European CE certification (EN 12150 glass safety, EN 14351-1 doors/windows), US SGCC standards, Australia AS 2208, and ISO 9001 quality system certifications, ensuring hassle-free municipal building sign-offs.
Frequently Asked Questions
Sourcing Aluminium Net Sliding Doors for Barcelona Projects
Expert answers addressing customs, shipping, CTE energy standards, hardware choices, and factory customization.
What is the typical shipping lead time from your Foshan factory to the Port of Barcelona? +
Production lead time typically takes 25 to 30 days following final CAD shop drawing confirmation and deposit receipt. Ocean transit time from Shenzhen or Guangzhou ports to the Port of Barcelona (Port de Barcelona) averages 28 to 35 days. We advise ordering 60 to 75 days ahead of your on-site installation schedule in Spain.
Do KARON aluminium sliding doors comply with Spain's CTE (Código Técnico de la Edificación)? +
Yes. Our thermal break profiles feature PA66GF25 polyamide insulating struts paired with argon-filled low-emissivity double or triple glazing. These systems achieve thermal transmittance values (Uw) between 1.3 and 1.6 W/m²K, outperforming the mandatory requirements for Climate Zone C2 (Barcelona and coastal Catalonia) under CTE DB-HE guidelines.
How do integrated mosquito net sliding doors perform in coastal saline air? +
We use high-grade 316 stainless steel wire mesh or heavy-duty UV-stabilized fiberglass mesh for mosquito nets, combined with extruded aluminium screen frames finished with Qualicoat Seaside powder coating. This prevents salt-air corrosion, rusting, wire sagging, and pitting even on beachfront properties in Sitges, Castelldefels, or Costa Brava.
Can you custom manufacture sliding net doors according to architectural CAD drawings? +
Absolutely. Every door and window unit is manufactured to order based on your project schedule and opening sizes. Our engineering team converts your architectural plans into fabrication shop drawings detailing profile cross-sections, glass specs, drainage slot positions, and hardware accessories for approval prior to production.
What EU tariff classifications and customs documents apply when importing to Spain? +
Aluminium door and window systems fall under TARIC / HS Code 7610.10.00. We supply a full export documentation set including Commercial Invoice, Packing List, Bill of Lading (B/L), Certificate of Origin (Form A or CO), and CE Compliance Declarations (DoP) so your Spanish customs broker can execute smooth customs clearance.
What hardware brands are fitted on your sliding door systems? +
We work with top-tier hardware manufacturers including German brands (SIEGENIA, GU, HOPPE) as well as premium custom hardware systems (HOPO, Sobinco). Multi-point perimeter locking systems provide enhanced anti-burglar security meeting European RC2 / PAS 24 standards.
How are glass breakages avoided during ocean transport? +
Glass panels are made exclusively with EN 12150 certified toughened safety glass or EN 14449 laminated safety glass. All door sashes and insulated glass units are packed upright inside custom heavy-duty, fully enclosed plywood crates lined with impact-absorbing EPE foam and corner protectors, achieving zero damage during transit.
What is the minimum order quantity (MOQ) for custom project sourcing? +
We support both custom high-end residential villa projects and large commercial developments. While full-container loads (FCL 20GP/40HQ) offer the best shipping economics, we also accept consolidated LCL orders for custom luxury home builds.
Ready to Source Aluminium Net Sliding Doors for Your Barcelona Project?
Send us your window schedules, architectural elevations, or project dimensions. Our engineering team will review opening specifications and provide a factory-direct quote within 24 hours.
