Aluminum Thermal Break Profile for Windows – Standard PA66 Insulated Window Extrusion Series | Shengxin

The Aluminum Thermal Break Profile for Windows is a proven, standardised extrusion series designed to give window fabricators a reliable, cost-effective path to producing energy-efficient windows. By combining 6063-T5 aluminium outer frames and sashes with PA66 GF25 polyamide thermal barriers in a range of standard widths, these profiles achieve frame U-values from 3.2 down to 1.8 W/m²K — meeting energy code requirements across most climate zones without the lead time and tooling investment of a fully custom profile development.

We offer the profiles in three standard frame depths — 60mm, 70mm, and 80mm — covering the majority of residential and light commercial window applications. The 60mm series, paired with a 14.8–18.6mm PA66 strip, is an economical choice for moderate climates. The 70mm series, with a 20–24mm strip, provides enhanced thermal performance suitable for cold climates and stricter building codes. The 80mm series, featuring a 28–34mm strip, delivers Uf values below 2.0 W/m²K for Passive House and net-zero energy buildings. All series share the same Euro-groove hardware interface, glazing bead geometry, and gasket retention design — fabricators can switch between thermal performance levels without retooling their workshop.

Each profile is extruded on our 35 presses, then the PA66 strip is mechanically crimped on our automated thermal break assembly line. Surface finishing — anodized, powder coated, or PVDF — is applied in-house before assembly, ensuring a uniform, durable finish that meets Qualanod and AAMA standards. Shengxin's aluminum thermal break profiles for windows are supplied to fabricators in 97 countries, backed by 29 years of extrusion expertise, full material traceability, and dimensional inspection reports with every shipment.

Features & Benefits

• Three standard frame depths: 60mm, 70mm, and 80mm series cover the full spectrum from economy to Passive House performance. All series share compatible hardware grooves, glazing bead seats, and gasket channels — simplifying inventory for multi-range fabricators.
• Proven PA66 GF25 thermal barrier: Polyamide strips from 14.8mm to 34mm width, all tested to EN 14024 for shear strength. The thermal conductivity of 0.30 W/m·K provides a 500-fold insulation improvement over the aluminium sections it separates.
• Euro-groove hardware compatibility: Standard 15mm and 20mm slots accept all major European locking mechanisms, hinges, and tilt-turn corner drives — no custom hardware or adaptor profiles required.
• Double and triple glazing ready: Standard glazing bead profiles accommodate 24mm to 44mm insulated glass units. The 80mm series is optimised for triple glazing up to 44mm, essential for Passive House Uw targets.
• Pre-engineered drainage: Integrated drainage slots and pressure-equalisation chambers in the outer frame and sash profiles manage water ingress without separate drainage inserts — tested under dynamic water penetration per EN 1027.
• Quick to market: Because the profile geometries are standardised, new fabricators can start production within weeks of die confirmation. Existing fabricators can add a higher or lower thermal performance series to their range with minimal workshop changes.

Standard Window Profile Series Overview

Select the frame depth and PA66 strip width that matches your target U-value and climate requirements. All series share the same fabrication interface for tooling and hardware.

All series are available as outer frame, casement sash, tilt-turn sash, and fixed light profiles. Matching glazing beads, gaskets, and reinforcement profiles are supplied as a complete package.

Technical Specifications

How to Select the Right PA66 Strip Width for Your Uf Target

The thermal performance of a window frame is directly related to the width of the polyamide insulation strip. Use this reference to identify the strip width needed for your energy target.

Uw values are indicative for a 1.2m x 1.2m reference window with warm-edge spacer. Actual values depend on window size, glazing specification, and spacer type. Our engineering team provides project-specific thermal simulations using EN ISO 10077-2 methodology.

Benefits of a Standardised Window Profile Series

• Reduced tooling investment: All three frame depths share the same glazing bead geometry, gasket grooves, and hardware slots — one set of fabrication jigs and tooling serves the entire product range.
• Simplified inventory: Common accessories such as corner cleats, weather seals, and drainage covers are interchangeable across the SW-60, SW-70, and SW-80 series — reducing the number of SKUs a fabricator must stock.
• Faster training and setup: Workshop staff learn one fabrication methodology. Adding a higher or lower thermal performance series to the product line requires minimal additional training or process change.
• Scalable thermal performance: Offer your customers a good-better-best window range by simply selecting the appropriate frame depth and PA66 strip width — no redesign of the window layout or hardware configuration required.
• Proven, tested design: The profile geometries have been refined over multiple production cycles. Uf values, shear strength, and water tightness are validated by test data — giving fabricators confidence in the as-built performance of every window.

Value-Added Processing Options

Why Shengxin for Standard Thermal Break Window Profiles?

A standard profile series only delivers its promised performance if the extrusion and thermal break assembly are executed with consistent precision. Shengxin's 29 years of aluminium manufacturing ensure that every length of SW-60, SW-70, or SW-80 profile meets its dimensional, thermal, and mechanical specifications — giving your window fabrication line a reliable foundation.

Global Fabricator Partnership: $120 million in assets. Products exported to 97 countries. Full mill certificates, PA66 material certs, and thermal break inspection reports with every shipment. 5 container loading platforms for on-time dispatch.

Aluminum Thermal Break Window Profile FAQ

Custom Thermal Break Window Profile Solutions

Need a frame depth outside our standard 60-70-80mm range? A thicker wall for hurricane-rated windows? A custom glazing bead for heritage sightlines? Shengxin's custom extrusion and thermal break assembly service adapts our proven window profile technology to your unique market requirements.

How It Works:

1. Send your drawing — 2D PDF/DWG or 3D STEP/IGES file of your window profile design.
2. Our engineers review — we assess extrudability, thermal performance, and suggest optimisations for Uf value and fabrication efficiency.
3. Receive a quotation — including die cost, PA66 strip specification, unit price, and lead time.
4. Approve a sample — we extrude the profiles, assemble the thermal break, finish the surface, and send sample sections for your evaluation.
5. Full production — consistent quality across every bar, delivered on schedule with full quality documentation.

⚠️ Important Note: All profile images and dimensional drawings on this page are for reference only. Each window profile series is customised to your specifications — final dimensions, PA66 strip width, Uf values, and surface finish will be confirmed based on your approved production drawings and thermal simulations. Please contact our engineering team to discuss your specific requirements before placing an order.