PVC hinged window, sash on sash | Features and uses
It is PVC hinged window, sash on sash One of the most popular window systems uPVC It is an evolution, as it combines natural ventilation, good insulation, and ease of use, with a practical design suitable for homes, villas, and offices.
This system differs from the traditional hinged window, as it consists of:
- A fixed main frame.
- Two large doors of Insect netting (They open first).
- Inside each panel is a mesh Independent glass panel They can be opened and closed separately.
This is the system that it implements WindoStyleAs shown in the pictures, the netting with insect screens can be used only to let in air, or the glass sashes can be opened when more ventilation is needed.
What is a leaf-on-leaf system?
This system is called universal. Twin Sash Window or Villa WindowIt features two panels that work on top of each other within the same frame; one panel for insect protection and one independent glass panel. It is a design that combines ventilation, protection and ease of use.
Looking at the pictures, you will notice that:
- The outer hooves are hooves Insect netting.
- Inside each panel is an independent glass panel.
- Each part can be operated individually as needed.
This makes the system more flexible than many traditional systems.

How does a PVC hinged window, one leaf on top of the other, work?
The system works in a simple and practical way:
Firstly
The glass panel opens.
secondly
It can be left insect screen panel Closed if you want air to enter while preventing insects from entering.
Third
If you need full ventilation, the second glass door is also opened.
This allows you to control:
- Air volume.
- Insects enter.
- Easy to clean.
- Daily usage instructions.
This is one of the main reasons why this system has become widespread in modern villas and houses.
Why do customers prefer this system?
By reviewing frequently asked questions in Facebook groups about finishes and uPVC forums, customers reiterate several points when choosing windows, the most important of which are:
- I want ventilation without mosquitoes.
- I want to clean the window easily.
- I don't want to install an external wire.
- I want to open the window completely.
- I want a window that looks stylish on the inside.
These requirements are met by the system. Leaf on leaf In practical terms.
Key features of PVC hinged window, sashe on sashe
1- Excellent natural ventilation
Because the two doors open fully, the system allows a large amount of air to enter, making it suitable for bedrooms, living rooms, and kitchens.
2- Protection from insects
Having a separate window for the insect screen allows for opening Glass And take advantage of the air while keeping mosquitoes and insects out without the need for additional solutions.
3- Easy to clean glass
One of the biggest problems faced by owners of sliding windows is the difficulty of cleaning the outer surface of the glass.
In this system, the doors can be opened and the glass can be easily accessed from inside the house.
4- Tight seal
The system relies on strong hinges with multiple locking points, which helps to seal the door tightly and reduce air and dust leakage when properly manufactured and installed.
5- Better insulation
When using:
- uPVC sector good.
- Double glazing.
- High-quality gaskets.
The system provides excellent performance in Thermal and Acoustic Insulation Compared to traditional solutions.

The difference between single glazing and double glazing
| The element | Single glass | Double glazing |
|---|---|---|
| Thermal Insulation | good | better |
| Sound Insulation | good | better |
| Energy Efficiency | Medium | higher |
| Comfort within the building | Good | better |
| Usage | General applications | Projects requiring higher insulation |
This does not mean that double glazing is the right choice for every project; rather, the type is determined according to the nature of the use and the client's needs.

Is it possible to install double glazing?
Yes.
In fact, many customers choose Double glazing With this system, you can obtain:
- Better sound insulation.
- Reduce heat transfer.
- Increase energy efficiency.
Therefore, it is one of the best options for apartments overlooking main streets.
Where is this system used?
It is suitable for:
- Bedrooms.
- Children's rooms.
- Living rooms.
- Kitchens.
- Villas.
- The chalets.
- Offices
- Clinics.
The difference between a double-leaf window and a sliding window
| Comparison | Leaf on leaf | tractor |
|---|---|---|
| ventilation | Excellent | Good |
| Open the window | complete | Approximately halfway through the opening |
| Cleaning the glass | Very easy | Relatively difficult |
| Mesh installation | Integrated within the system | Often requires a separate system |
| Isolation | High at closing | good |
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Is it suitable for large openings?
No, only up to a width of 180 cm.
However, the appropriate dimensions for each project are determined according to:
- Dimensions of the opening.
- The weight of the glass.
- Profile type.
- Type of hinges.
To ensure ease of operation in the long term.
Does it need maintenance?
One of the most frequently asked questions is:
Does a PVC hinged window (panel-on-panel) require maintenance?
Answer:
It does not require complicated maintenance.
That's enough:
- Cleaning the frame.
- Cleaning the mesh.
- Cleaning the water drains.
- Lubricate the hinges when needed.
To maintain ease of operation.
Why does WindoStyle implement this system?
Because this system offers the customer several advantages in one place:
- Excellent ventilation.
- Protection from insects.
- Stylish appearance.
- Easy to clean.
- The possibility of installing single or double glazing.
- Manufactured to actual dimensions.
- It can be implemented in multiple colors.
All units are manufactured within a factory. WindoStyle According to the dimensions of each project, using high-quality components and original accessories to ensure performance and longevity.
Frequently Asked Questions
Can the glass panels and mesh panels be fully opened?
Yes, each part can be opened independently, which provides flexibility in controlling ventilation and protection from insects.
Can the window be operated using only the mesh screen?
Yes, and this is one of the most important advantages of the system, as it allows air to enter while keeping the insect net closed.
Is it suitable for apartments?
Yes, especially bedrooms, living rooms and kitchens.
Is it possible to install double glazing?
Yes, and the appropriate glass can be chosen according to the insulation and privacy requirements.
Is this system better than a tractor?
If the priority is full ventilation, ease of cleaning, and airtightness, then a hinged leaf-on-leaf system is a suitable option, while a sliding system remains appropriate in places with limited space.
Conclusion
If you are looking for PVC hinged window, sash on sash Combining ample ventilation, insect protection, ease of use, and good insulation, this system is one of the best window solutions. uPVC Modern. It features a practical design based on two insect-mesh panels and two independent glass panels within a single frame, giving you greater flexibility for everyday use. Made with high-quality profiles, suitable glass, and genuine hardware, you get a window that combines practicality with a modern look and will serve you for years to come.
















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