The first step in uPVC window manufacturing is cutting the profiles, whether (frame – sash – transom – buckler – mesh sash) in the production of facades, doors, and uPVC windows, and therefore:

• We pay close attention to the precise measurements of the wall opening, on which uPVC windows, doors, and uPVC facades are installed.
• We share with the client the most suitable design drawings according to the wall opening size to maximize its benefit. There are also flexible options based on each client’s needs and budget.
• The accuracy of profile corner cutting has a very important impact on achieving high-quality uPVC windows and doors with excellent performance.
• The saw blade and operating platform must be kept dry and clean, otherwise it will affect the subsequent processing performance in uPVC window manufacturing when cutting the uPVC window frame.

We always ensure that our uPVC windows and doors perform well against rainwater or any water exposure. This makes us at Windostyle:

• We provide the necessary drainage openings to allow water to exit, while also creating a pressure-balancing hole on the profiles to ensure smooth water flow according to the location and function of each hole.
• The holes include internal drainage openings, internal pressure-balancing openings, and external drainage openings.

Where and how many holes should we create?

We must clearly know where to create the water drainage and pressure-balancing holes, and how many are needed, during the uPVC window manufacturing process.

Before we begin, we must know the areas where holes should not be made.

>>> Some key points we need to pay attention to

1. Do not connect the drainage hole and the internal reinforcement steel in the uPVC window. If this happens, rainwater will seep into the main cavity, causing the steel to rust.
2. The drainage holes should be located at the lowest point of the cavity, as this helps prevent water accumulation inside the profiles.
3. There should be a gap between the internal drainage hole and the external drainage hole.

We need to create some accessory mounting holes on the profiles during the uPVC window manufacturing process. These holes are usually made on the window profiles.

1- How to create an accessory mounting hole?

There are several methods to create these holes, but we usually use a drilling machine or a standard manufacturing device.

2- What type of accessory mounting hole should we create?

We usually create the lock hole, handle hole, and the special cylinder hole in door manufacturing. These holes can be made using the template on the_

We must also drill the hole in the correct position and ensure it is smooth and free of burrs, which is essential for accurate accessory installation.

Function of Reinforcement Steel 

• First, to enhance the rigidity and strength of uPVC windows and doors.
• Second, to prevent deformation and, moreover, to make accessory installation more secure.

Technical Requirements for Reinforcement Steel 

• The surface of the iron is treated with an anti-corrosion coating or zinc to prevent rusting.

The size and shape of the reinforcement steel.

• The reinforcement steel is installed inside the main cavity of the profiles in a UPVC window or door.
• The clearance between the main cavity of the reinforcement steel and the UPVC profiles is 0.51 mm.
• This gap makes the installation process easier to restore after the window is compressed.
• The reinforcement steel must be shaped according to the profile cavity and type.

Do not use nails to assemble the corners of UPVC windows and doors, instead, the ends are thermally welded using a special welding machine under clamp pressure at the same temperature used during profile extrusion, ensuring the welded ends are uniform and form a single piece.

This is the opposite for windows made of aluminum or wood, where the window corners are assembled using parts joined with nails, which may be affected during installation or after use.

After welding, the welded surface will have excess weld buildup in the manufacturing of UPVC windows or doors. To avoid affecting the function and appearance of the window, the corner needs to be cleaned.

For casement windows, excess weld buildup will affect the leak resistance between the sash frame and the window frame.

For sliding windows, excess weld buildup on the welded profile will affect the sliding of the sash panels.

We clean the visible excess weld on the frame and sash to preserve the aesthetic appearance, prevent leakage, and ensure ease of use for the related accessories.

The four sharp corners are cleaned to prevent stress during window assembly and installation, as well as to preserve aesthetics and avoid damage to the handles during opening and closing.

Additionally, all weld excesses that affect the appearance and the installation of accessories must be cleaned.

UPVC profile weatherstripping is usually installed in sliding UPVC doors and windows. It is a strip of felt used to prevent water and dust from entering.

We select accessory fittings according to the structure and design of the UPVC window, whether it is sliding, casement, or any other type of UPVC window.

Windostyle, as a UPVC window manufacturer that prioritizes quality, considers the use of high-quality UPVC window accessories extremely important.

UPVC Window Accessories:

• UPVC Window Hinges are used to ensure smooth cooperation between the frame and sash, and to support the weight of the window sash as well as wind pressure. UPVC window hinges are made from UPVC material.
• UPVC Window Handles are primarily used to open and close UPVC windows and doors. They are selected according to the design of the UPVC window.
• UPVC Window Espagnolettes are used to lock the window or door at multiple locking points with the use of handles. They are selected according to the design and dimensions of the UPVC window.
• UPVC Window Rollers are used to move the window or door sash along the frame track. The roller surface must be smooth and free of any defects.
• UPVC Window Dust Seals are used in sliding windows on the frame or door between the moving sashes to block dust and prevent it from entering.

Glass beads are installed in the sashes that hold the glass before inserting the glass itself. Glass beads are solid plastic pieces, 3 inches (7.6 cm) long. One piece is inserted at the top and bottom of each glass sash that comes with the UPVC window. This ensures that the glass panes fit correctly into the sashes during installation.

Available Glass: Single glass, double glass, and insulated glass.

Depending on the gas inside the insulated glass, it is classified as either standard glass or double glass filled with inert gas.

We need to ensure the quality of our production in manufacturing UPVC doors and windows, as we are a distinguished supplier of UPVC windows.

Final Product Inspection in UPVC Window Manufacturing

After assembling the windows, before leaving the factory, some samples must be taken according to the different types and dimensions of the windows.

There are also several other elements that must be inspected before leaving the factory.

1. Corner weld strength.

2. Installation of reinforcement steel.

3. Installation of accessories.

4. Opening and closing force of the lock and handle.

5. Opening and closing force of the sash.

6. Inspect the glass installation and ensure its integrity.

7. External appearance of the UPVC window.

• Doors and windows must be placed in well-ventilated areas, protected from rain, and kept dry and level.
• In UPVC door and window manufacturing, they must not be stored outdoors or come into contact with corrosive materials.
• All windows must also be placed vertically according to the installation direction, with the vertical angle not less than 70 degrees. Flat stacking directly on the ground is not allowed.
• In the manufacturing of windows and doors made of UPVC, the windows must be loaded and unloaded gently.
• It is very important to arrange the doors properly in the cart when loading windows and doors.
• We maintain stability to prevent movement and vibration and to avoid contact between the accessories and the glass.
• We use a soft material to separate the windows and place them vertically in an organized manner.

The installation stage is one of the most important phases in the production of UPVC doors and windows, as correct installation depends on the unit's performance quality. Therefore, we always ensure to have a team of the best and most skilled installation technicians in the field of UPVC doors and windows.

1 – The frame is injected with foam from the outside before installation in the wall opening to ensure that all gaps between the frame and the wall are filled, guaranteeing insulation quality and strength.

2 – The frame is placed in its designated opening and then leveled using a spirit level to achieve maximum balance, after which the frame is fixed to the wall using the special installation screws.

3 – The foam is trimmed and any resulting debris is removed, then silicone is applied to ensure proper insulation.

4 – The sashes and unit accessories are installed, the protective stickers on the profiles are removed, the unit is cleaned, and then delivered to the client.