What does window upgrading mean?
Window upgrading refers to the technical modernization of existing windows without completely replacing them. This includes renewing the glazing, seals, fittings, and security components so that the window meets today’s standards for energy efficiency, comfort, and burglary protection.
How much CO₂ does a window upgrade save?
A modernized window unit saves on average 30–45 kg of CO₂ per year. Over a service life of 20 years, this amounts to up to 900 kg of CO₂ saved per window compared to an unrenovated window.
Can an existing window be upgraded to RC2 burglary protection?
Yes. By replacing the fittings, adding extra locking points, and adapting the security technology, many existing wooden windows can be upgraded to the RC2 standard.
How long does a window upgrade take?
Typically, a window can be modernized within a few hours. This causes minimal disruption or major construction work compared to a full window replacement.
Does new glass really improve thermal insulation?
Yes. Modern thermal insulation glazing with Ug = 0.7 W/m²K significantly reduces heat loss. In combination with new seals and a bonded glass rebate, this creates a much tighter and more energy-efficient window.
Which buildings are suitable for window upgrading?
Window upgrades are particularly suitable for:
- Multi-family houses
- Urban apartments
- Old buildings
- Commercial properties
- Listed or heritage-protected buildings
What is the benefit of an additional overlap seal?
A milled overlap seal reduces drafts, improves airtightness, and increases living comfort. At the same time, heating costs and sound transmission are reduced.
Is window upgrading more sustainable than installing new PVC or wood/alu windows?
Often, yes. New windows generate high CO₂ emissions due to production and material use. Upgrading existing windows continues to use the resources already in place and avoids so-called “embodied energy.” As a result, the overall ecological balance is often better than with a full replacement.
How much energy can be saved through a window upgrade?
For a typical wooden window (1200 × 1600 mm), the Uw value can be improved from around 2.4 W/m²K to approximately 1.2 W/m²K. This can save about 160–170 kWh of heating energy per window per year, depending on the building and heating system.
How can I book an appointment online?
You can conveniently book an appointment through our online booking tool. Alternatively, you can request an appointment via email at dispo@fix-service.ch or by phone at +41 79 190 83 83.
Is it worth renovating old wooden windows instead of replacing them?
Yes. In many cases, renovating existing wooden windows is more economical and sustainable than a full replacement. The existing frame is preserved, which significantly reduces production-related CO₂, disposal costs, and construction effort.
How will I be reminded of my appointment?
You will receive a reminder via SMS and email 48 hours before the appointment.
Can I cancel my appointment?
You can cancel your appointment up to 2 business days in advance by clicking the cancellation link in your confirmation email. In case of no-show, travel costs will be charged.
How can I get in touch?
You are welcome to send us an email at info@fix-service.ch or a message via WhatsApp at +41 79 190 83 83. Alternatively, you can contact us through our contact form or by phone.
What as a thermography?
Thermography is a thermal imaging process that shows where heat is escaping from a building.
How long does it take to receive a quote?
Usually within up to 7 business days. For smaller jobs, we can provide a quote directly on-site.
How long do I have to wait until the work is carried out?
After confirming the quote, we order the necessary materials. Once everything is available, you will receive a scheduled appointment for the work.
Do I need to be home while the work is being done?
Not necessarily. You can leave us a key or ask friends or neighbors to be present for the appointment on your behalf.
Why should I use a window service?
A window service ensures that functionality, thermal insulation, and ease of operation are maintained. Cold rooms or high heating costs can result from leaky windows. Regular maintenance and care of your windows help preserve the value of your property and extend the lifespan of your windows.
A thorough window maintenance includes checking for damage and wear, as well as ensuring the proper functioning of seals, fittings, pivot hinges, corner joints, locking pins, hinges, and window handles. It also involves oiling all moving parts and treating the existing seals to maintain their elasticity and performance.
What is done during a window maintenance?
Our service includes the following tasks:
- Checking the overall functionality
- Testing the pressure and airtightness of the window sashes
- Inspecting, adjusting, and lubricating all fittings
- Replacing damaged parts such as locking components and handles
- Treating frame seals with silicone spray
- Visual inspection of surface wear and building connections
Ideally, a window service should be performed every 1,500 cycles or every 3 years.