Triple glazed aluminum windows and doors have become the go-to choice for homeowners, architects, and developers who want the best combination of energy efficiency, comfort, and clean modern design. ALPES, a system window and door manufacturer based in Foshan and Zhaoqing, China, has built its entire product line around this idea — thermally broken aluminum profiles, precision German hardware, and insulated glass units that keep homes warm in winter, cool in summer, and quiet all year round.
A triple glazed window is made of three panes of glass separated by two insulating cavities, usually filled with inert gas such as argon. Instead of a single thermal break, you get two, which means heat moves through the window much more slowly. When that glass unit is fitted into a thermally broken aluminum frame, the whole assembly works as one high-performance barrier.
The frame matters just as much as the glass. Aluminum is strong and light, so it can carry the extra weight of three panes without bulky profiles. ALPES uses 6060-T66 grade aluminum with profile thicknesses from 1.8mm to 2.5mm, meeting or exceeding the new national standards. Multi-chamber thermal break systems with PA66GF25 insulation strips interrupt the flow of heat through the frame itself, so the metal never becomes a cold bridge.
The benefits go far beyond keeping a room warm.
Better thermal performance. Triple glazing cuts heat loss dramatically compared with double glazing. ALPES's AW90 passive window reaches a K-value as low as 1.3 — a level usually associated with passive house construction — which translates directly into lower heating and cooling bills.
Quieter rooms. Every extra pane and air gap absorbs sound. Homes near busy roads, airports, or city centers notice the difference immediately.
Less condensation. Because the inner glass stays warmer, moisture is far less likely to form on the surface. That means clearer glass, healthier interiors, and less wear on window frames.
Stronger security. Three layers of glass are harder to break through, and when combined with multi-point locking systems from German hardware makers like ROTO, Winkhaus, CMECH, and Wehag, the window becomes a genuine barrier.
ALPES offers a complete range of aluminum windows and doors, all built around the same thermal break technology.
Casement windows. The C120, C113, and C116 outward-opening windows combine slim frames with triple sealing and multi-chamber insulation. The C116 uses 34–44mm multi-chamber insulation strips and German Wehag hardware for a clean, contemporary look.
Sliding windows. The TS130 side press window combines push-pull and swing hinge action, so it opens smoothly without taking up indoor space. German ROTO hardware, 200kg load-bearing pulleys, and an eight-point locking system keep it secure and easy to operate.
Tilt and turn windows. The AW90 passive window is the flagship of the range. With a K-value of 1.3, 360° locking points, and an eight-layer sealing system, it delivers passive-house-level performance. The AW113 series offers the same quality in a different profile for those who need another option.
Sliding doors. The SL155, SL112/167, and SL126/182 thermal break sliding doors are built for large openings. The SL126/182(75) features 27A super large insulating glass with inert gas filling, while the SL155 handles single panels up to 2800mm wide with a 400kg load capacity — ideal for panoramic views and open-plan living.
ALPES manufactures in a 100,000 m² facility spread across two production centers in Foshan and Zhaoqing, Guangdong. The company exports worldwide and has completed projects including luxury villas in Saudi Arabia, high-end residential developments in Dubai, and modern villa installations in Australia.
Because ALPES is a factory-direct manufacturer, custom sizes, colors, and glass configurations are part of the standard process rather than an afterthought. Standard colors include Ice Cream White, Aurora Gray, Starry Sky Gray, and Brown Coffee, with custom color matching available on request.
When you are sourcing aluminum windows and doors for a project, the supplier matters as much as the product. An aluminum sliding window supplier with in-house production, tested hardware, and real project experience will deliver consistent quality. ALPES combines all three: factory-direct pricing, German-engineered hardware, and a product range that covers casement, sliding, tilt and turn, and sliding doors.
For large openings and panoramic glazing, a sliding glass door manufacturer with thermal break technology and heavy-duty hardware makes the difference between a door that feels premium and one that feels ordinary. The same logic applies to tilt and turn windows — a manufacturer that controls its own production can guarantee the sealing, hardware, and finish that make these systems work.
Whether you are planning a villa, an apartment building, or a commercial project, ALPES can supply custom aluminum windows and doors built to your specifications. Contact the team for samples, technical drawings, and quotes.
