Frequently Asked Questions (FAQ)

You can use our online configurator to calculate it yourself, or request a custom quote by filling out our quote request form.

Once you have received our online quote, you can request the intervention of our technician for exact measurements.

Our delivery times vary from 70 to 90 days from the order. For special custom elements, you should consider two extra weeks.

No! Our installation systems usually do not require any masonry work, avoiding mess and dust.

The configurator is for those who want total freedom in customizing their windows and seeing prices instantly. The quote request is better if you have a budget and want our team to suggest the ideal solution.

Enter the width, height, quantity, sash type, and glass type in the dedicated boxes. Then click on "Add row" to start your configuration in our Configurator.

Click on the image in the "Colors" box to open a menu with available shades. In the "Glass type" box, you can select special glasses.

Click on the text above the image in the "Item type" box to access a wide selection of sash types.

Using the slider on the top left, you can choose between BASIC, MEDIUM, and TOP class. To the right of the slider, you will find the brands available for that tier.

Just click on "Request Quote" at the top right, confirm your choices, and provide your name and email address where the quote will be sent.

By using our custom quote request form, our experts will help you find the best uPVC windows for your specific situation.

Simply choose the product tier and your preferred brand. Enter approximate measurements and you can add accessories and installation services.

Absolutely not! Our low prices are the result of efficient logistics and direct online sales. Every order is processed on a highly structured, automated, and digitally optimized platform, fully exploiting every possible cost-saving opportunity. We source high-quality raw materials directly from renowned (e.g., German) manufacturers like Schüco or Rehau. Be wary of *too* low prices on the market: they often hide inadequate logistics (e.g., unloading 180kg windows right on the sidewalk!).

After receiving your quote, you can request an at-home measurement via our online form.

The 50% tax deduction can be claimed by homeowners, tenants, condominiums, and professionals, provided they meet the specific requirements. Read more on our Ecobonus page.

Deductible works include: insulation or replacement of roller shutter boxes, supply and installation of windows, front doors, skylights, roller shutters, and blinds. The new elements must comply with legal U-value limits.

The request must be submitted within 90 days from the end of the works on the ENEA portal. Payments must be made via a special bank transfer ("bonifico parlante").

Measure the width and height of the opening at three different points and take the smallest measurement. Deduct about 10-15 mm of clearance (fitting tolerance) from both the width and height. This gap is necessary for proper sealing and insulation with expanding foam and tapes.
If you are unsure, you can always request our professional measurement service!

In most cases, no! Old wooden frames can be cut out cleanly. Alternatively, we use a special "Z" frame (renovation frame with flange) that covers the old frame completely without any dust, mess, or the need for a bricklayer.

If you are an experienced DIYer, installation is absolutely feasible using our step-by-step guides. However, to guarantee maximum thermal and acoustic insulation and perfect sealing, we highly recommend professional installation. WinDirect offers an installation service to handle everything for you.

A high-performance window is useless if installed poorly. For this reason, Certified Installation requires sealing and thermo-acoustic insulation of the window joint on three distinct functional levels, each designed to meet specific and complementary needs:

• Internal Level (Vapor Barrier): Prevents moist indoor air from entering the joint, eliminating the risk of condensation and subsequent mold formation.
• Middle Level (Thermal and Acoustic Insulation): Insulates the gap between the window frame and the masonry using multifunctional expanding tapes or elastic foams.
• External Level (Weather Barrier): Provides absolute protection against wind and driving rain, while ensuring the joint remains vapor-permeable to allow any accumulated moisture to escape to the outside.

The use of illbruck TP652 illmod trio+ multifunctional expanding tape guarantees excellent and certified performances in a single product:

• Outstanding acoustic insulation: Certified noise reduction up to 58 dB (tested on a 15 mm joint according to EN ISO 717-1).
• Excellent thermal efficiency: Thermal conductivity of λ = 0,048 W/m·K (according to DIN 52 612).
• Joint thermal transmittance (U-value): Varies based on the window profile thickness, ensuring optimal thermal insulation: 0.8 W/(m²·K) for 60 mm profiles, 0.7 W/(m²·K) for 70 mm profiles, 0.6 W/(m²·K) for 80 mm profiles.
• Controlled water vapor permeability: The water vapor diffusion resistance coefficient (Sd-value) is less than 0.5 m (according to EN ISO 12572), keeping the joint consistently dry and protected.
• Fire reaction: B1 classification (difficult to ignite) according to DIN 4102.
• Long-term thermal resistance: Once stabilized, the tape withstands extreme temperatures ranging from -30°C to +80°C.

Choosing the correct tape section is essential to ensure the perfect expansion and sealing of the polyurethane within the joint:

• The width of the TP652 tape is selected based on the width (thickness) of the window profile.
• The ideal application range is selected depending on the actual width of the gap to be sealed between the window and the masonry.
• The golden rule: To ensure optimal performance, the actual width of the joint should ideally correspond to half of the application range of the selected tape.
• In the presence of windows that feature grooves in the profile, the joint width must be calculated by measuring the gap starting from the bottom of the groove itself.

[INSERIRE QUI LA FIGURA 1]
Operational caption: Fig. 1 - Measuring the joint. The actual width of the joint must correspond to half of the expected expansion (application) range for the tape. In case of grooves on the frame, the width is measured from the bottom of the grooves themselves.

The ideal temperature for applying and storing the tape is between +8°C and +20°C. Environmental temperature directly affects the physical behavior of the polyurethane and its decompression time:

• With summer temperatures (above 20°C): The expansion process of the tape is strongly accelerated. In this scenario, to prevent the tape from decompressing too rapidly before the window is fixed to the masonry, it is necessary to store the rolls in a cool environment before installation.
• With cold temperatures: The decompression and self-expansion process is visibly slowed down.
• Managing partial rolls: Once a roll has been started, to prevent accidental expansion inside the box, it must be immediately closed and secured with its original fastening band.

[INSERIRE QUI LA FIGURA 4]
Operational caption: Fig. 4 - Climate and storage. The ideal application and storage temperature is between +8°C and +20°C. Heat accelerates decompression, while cold slows down expansion. Store partial rolls by resealing them with the fastening band in a cool and dry environment.

The tape is glued along the entire outer perimeter of the window frame before placing it into the wall opening. During application, strict attention must be paid to a fundamental orientation rule:

• The tape benefits from the patented "Step Technology", characterized by an additional layer of light gray foam. This gray layer must be positioned exclusively on the inside of the joint (facing the interior of the room). This allows for greater compression of the tape on the inside, drastically improving air tightness and the Sd-value.

[INSERIRE QUI LA FIGURA 3]
Operational caption: Fig. 3 - Gluing TP652 onto the frame. The light gray layer (Step Technology) must be strictly oriented towards the interior of the building. The horizontal tape segments must overlap and cover the top of the vertical mullions, making sure to cut off the over-compressed ends at the start and finish of the roll before gluing.

Corners represent the most delicate points with the highest risk of air or water infiltration. To seal them perfectly, two strict guidelines are followed:

• The tape must never be folded or bent around corners. Each side must be managed individually: the tape is cut cleanly and the ends of the segments are joined perpendicularly at a right angle.
• Management of longitudinal joints: When transitioning from one tape segment to the next, the tape should not be stretched, but applied leaving an "overlength" (a slight excess of longitudinal compression) in order to compensate for physical shrinkage and prevent post-expansion cracking.

[INSERIRE QUI LA FIGURA 2]
Operational caption: Fig. 2 - Joint management. In the corners or at the connections between multiple tape segments, never bend the material but join the sections perpendicularly, always leaving a slight safety "overlength" to guarantee continuous hermetic compression.

For a solid and lasting installation, follow these golden rules:

• Drilling: If the frame is not pre-drilled, drill 6 mm holes in the center of the profile.
• Screw Spacing: Screws should be 50 to max 75 cm apart, and 10-15 cm away from the inner corners.
• Frame Screws: Use universal self-tapping frame screws for wood, masonry, and concrete (without dowels).
• Insulation: Once fixed, insulate the perimeter gap with PU foam or expanding tape for perfect thermal sealing.

Hanging and removing the window sash (e.g., with TITAN hardware) is straightforward if you follow the correct steps.
Hanging the sash:

• Step 1: Place the sash onto the bottom frame hinge pin.
• Step 2: Align the top of the sash. For TITAN hinges, the top stay pin should be inserted with the sash open at an angle between 0° and 60°.
• Step 3: Push the top pin upwards to lock the sash in place. Warning: Never use a hammer!

Unhanging the sash:
To remove the sash, proceed in reverse order. Pull the top pin downwards (be careful not to pull it completely out or drop it) and lift the sash off the bottom hinge.

The final touches are crucial for the window's aesthetics:

• Trims and Cover Profiles: The insulation gap is covered with a universal PVC trim profile. These profiles are often pre-scored on the back to be snapped to 10, 20, or 30 mm widths and glued with special PVC glue or silicone.
• Handle Installation: The handle is simply secured with two screws to the internal gear mechanism.
• WARNING - Protective Film: Remove the protective film from the PVC profiles after painting, and strictly no later than 3 months after installation. Otherwise, the sun could bake the film onto the frame, making it nearly impossible to remove!

For highly energy-efficient or passive buildings requiring an air tightness test (Blower Door Test), the TP652 tape guarantees maximum results provided these preliminary site steps are strictly followed:

• Masonry leveling: The wall substrate must be perfectly suitable. If the surface is irregular, it must be leveled and made perfectly smooth before installation using dedicated cementitious repair mortars like illbruck WF450 or WF470.
• Deep cleaning: The outer profile of the window must be degreased and cleaned with a specific illbruck cleaner before gluing the tape.
• The 7-day rule: If a Blower Door Test is planned, the installation of the window with TP652 tape must be carried out at least 7 days prior to the test. This timeframe ensures the complete and uniform self-expansion of the polyurethane, hermetically sealing every microscopic gap and ensuring the success of the air tightness test.

Modern uPVC profiles act as true thermal shields. Solar energy enters as short-wave radiation, but internal heating heat is long-wave. Low-E glass features a microscopic silver layer that acts as a thermal mirror: it reflects internal heat back into the room, preventing loss, while allowing solar energy in for valuable Passive Solar Gain in winter.

To achieve maximum thermal insulation, we combine several technologies:

• Double or Triple Glazing: Triple glazing doubles the insulation effect, ideal for passive houses.
• Warm Edge Spacers: Old aluminum spacers are replaced with insulating materials to eliminate thermal bridges.
• Inert Gases: The cavity is filled with Argon or Krypton, which conduct heat much less than air.
• Ug-Value: A standard double glass offers a Ug of 1.0-1.1 W/m²K, while triple glazing drops the value to 0.4 - 0.7 W/m²K.

It offers the ideal combination of brightness and protection against overheating.

• Heat Shield: Blocks excess solar heat, reducing the need for air conditioning.
• High Light Transmission: Keeps a neutral appearance and lets in up to 70% of natural light.
• Selectivity: A high value means lots of light enters, but very little heat.

A standard WinDirect double glazing unit already offers an excellent base acoustic reduction of 32dB. For homes exposed to heavy traffic, sound-absorbing glasses are used based on:

• Mass: Thicker glass panes create a bigger barrier.
• Asymmetrical Structure: Combining panes of different thicknesses blocks a wider range of sound frequencies.
• Acoustic PVB: Special dampening films achieve sound reductions of up to 54 dB.

Note: Often, noise enters through the old roller shutter box. We highly recommend installing an insulated monoblock system.

Choose your acoustic insulation based on your location. Here is our guideline table:

Built by laminating panes together with elastic PVB films.

• Safety Glass: Mandatory for French doors. If broken, the film holds the fragments together, preventing sharp shards.
• Anti-Burglary Glass: Uses thicker films (Class P2A and above) to significantly increase the time and effort needed for an intruder to break in.

WinDirect recommends using internal Georgian bars positioned inside the double glazing unit. Because the bars are sealed between the glass panes, the outer glass surfaces remain completely smooth. Available in various thicknesses and colors, this system makes window cleaning effortless compared to traditional external bars.

Yes! Technology offers unique solutions:

• Radio-transparent Glass: Highly insulating windows can block cell signals. Special micro-structures allow signals (including 5G) to enter while keeping thermal insulation intact.
• Patterned/Obscure Glass: Ideal for bathrooms, ensuring privacy without blocking light.
• Vacuum Glass: Offers triple-glazing insulation in just 6mm of total thickness by creating an absolute vacuum.
• Self-cleaning Glass: Uses UV rays and rain to break down and wash away dirt from the outside surface.

Not at all, and this is one of the biggest advantages of uPVC! Unlike old windows, ours use a "dry glazing" system and snap-on glazing beads. The beads can be easily unclipped, allowing the glass pane to be replaced cleanly in minutes without breaking anything.
We follow strict technical guidelines for glass installation:

• Dry Glazing & Seals: We avoid messy silicone sealants that can trap moisture. Instead, high-quality EPDM gaskets ensure a perfect seal, proper vapor pressure equalization, and optimal drainage.
• Professional Glass Packing (Setting Blocks): The weight of the glass is transferred to the frame using specific polymer setting blocks (never wood in uPVC!). This keeps the window sash perfectly square and prevents sagging over time.
• Material Compatibility: All seals and blocks are 100% chemically compatible with the insulating glass edge seal to maximize its lifespan.

Aerators allow for continuous room ventilation even when windows are closed, solving the problem of condensation and mold. A university study of 5,000 cases showed that over 22% of homes have aesthetic or structural damage (peeling paint, ruined furniture) due to humidity. Preventing mold protects your health (avoiding allergies and respiratory issues), improves air quality, and can even reduce heating costs.

The main advantage is self-regulation: the system ventilates the rooms autonomously. They are silent, maintenance-free, and completely invisible. Because they are integrated into the window frame, they do not alter the internal or external aesthetics of the house in any way.

The Regel-air® system uses wind pressure as a natural driving force to generate "cross-ventilation": fresh air enters from the windward side of the building, while stale air is drawn out from the opposite side. The modules contain special flaps that close automatically during high winds to block drafts, and reopen when the pressure drops.

Designed specifically for uPVC windows, Rehau AirComfort is made of high-quality coated EPDM and tested by the IFT certification institute (up to insulation class 4). It operates flexibly, silently, and invisibly, regulating the air intake and blocking excess air during strong winds. It is the ideal solution for combating humidity in critical rooms like bathrooms and kitchens, or in north-facing houses.

We work with the 3 market-leading manufacturers:

• Siegenia (TITAN): Focuses on intelligent self-adjustment and smooth operation.
• Maico: Stands out for extreme load capacity (up to 220 kg with "Mammut" hinges) and superior "Silver Look" rust protection.
• Roto (Roto NX): Specialized in precise mechanics for heavy glazing and certified RC2 security as standard.

Micro-ventilation allows for healthy air exchange while minimizing heat loss and maintaining security:

• Siegenia: An energy-saving arm limits the tilt opening to about 40 mm.
• Maico: By turning the handle 45°, the mechanism safely locks the sash at a fixed distance of 10 mm from the frame.
• Roto: Tilting the handle to 135° provides draft-free ventilation without needing additional frame elements.

If your uPVC window sash touches the frame or doesn't close properly, you can easily adjust it using the Allen screws on the hinges (refer to the color-coded diagram):

• Sash drags at the bottom (Green): To raise the sash, tighten the bottom Allen screw.
• Sash drags at the top (Green): To lower the sash, loosen the same bottom Allen screw.
• Sash is out of plumb or drags at the front (Red/Blue): Adjust the screw on the top stay hinge to straighten the sash.
• Insufficient gasket pressure (Gray): To increase weather-stripping pressure, rotate the mushroom cams around the sash perimeter.

To adjust your front door hinges (e.g., Dr. Hahn):
1. Lift and remove the door sash while in the open position (approx. 90°).
2. Adjust the pressure on the weather seals via the hinge pin.
3. A horizontal adjustment of +/- 5 mm is possible to center the sash.
4. The door height can be raised by +4 mm or lowered by -3 mm.