Windows and balconies

Up to one-third of a building's heat can be lost through older two-pane windows. Poorly insulated windows can also cause cold drafts, often felt as floor-level chills and discomfort. There are several options available for optimizing window energy efficiency.

Windows

Regular maintenance is essential for preserving windows and extending their lifespan. If the goal is to improve a window’s insulation value (U-value), there are two main options: renovation or replacement. Window renovation can range from simple repainting to frame restoration and sash replacement. In some cases, entire window or glass sections may need to be replaced. The easiest and most cost-effective measure is to inspect and replace worn-out sealing strips to prevent drafts.

For heritage properties, renovation is often the only viable option. In such cases, we use traditional craftsmanship and materials to maintain historical integrity. Upgrading existing glass or adding an extra pane can also help reduce energy consumption, leading to both economic and environmental benefits. We also offer solutions such as insert windows or aluminum-clad wooden windows for enhanced durability and energy efficiency.

Understanding U-Value
The U-value of a window indicates its energy efficiency—the lower the value, the better the insulation.

Energy-efficient windows: U-value of 1.0 or lower
Standard triple-pane windows: U-value of around 2.0
Double-pane windows: U-value of around 3.0
This means that energy-efficient windows insulate twice as well as standard triple-pane windows and three times better than double-pane windows.

Renovating Well-Preserved Windows
For buildings with architectural or historical significance, renovating windows is the preferred option. If the frames and sashes are in good condition, the best approach is to retain the existing windows while adding an extra energy-efficient glass pane on the inside. Alternatively, replacing the inner window with energy or insulated glass can reduce heat loss by up to 50% while preserving the original appearance.

Replacing Windows in Poor Condition
If windows and doors are in poor condition and have a high U-value, replacement is often the most cost-effective solution. Well-insulated windows stay warmer on the inside, improving indoor comfort and allowing for lower heating settings without compromising comfort.

Energy-Efficient and Modern Window Systems
Upgrading to modern windows offers not only a longer lifespan but also significant energy and environmental benefits. New windows provide better insulation, reduce noise, and come with advanced features such as tilt-and-turn ventilation (Dreh-Kipp). Additionally, smart insulated glass technologies with solar protection, soundproofing, and dirt-resistant coatings are now available at reasonable costs, further enhancing the efficiency and convenience of modern window systems.

Balconies

Renovated and Expanded Balcony Slabs Increase Property Value
Whether through on-site casting, replacing with prefabricated slabs, or combining renovation with prefabricated extensions, we offer various solutions that not only extend the balcony’s lifespan but also increase the property’s value. With a proper building permit process, balconies can be expanded, enhancing both usability and market appeal.

By applying protective treatments, such as carbonation-inhibiting coatings, impregnations, and surface treatments, the durability of the renovation can be significantly extended, allowing the investment to be spread over more years.

Railings and Glazed Enclosures Create Additional Living Space
We renovate balcony railings, replace them with similar designs, or introduce completely new solutions. Often, we prepare railings for various glazing systems or carry out a complete enclosure in one go.

There are numerous smart and aesthetically pleasing solutions that can be tailored to your needs. Enclosing a balcony essentially creates an additional living space, increasing both its usability and the property’s value. Since we are independent of specific manufacturers, we can assist with project planning, supplier selection, and testing different solutions.

Loft Corridor Renovation While Residents Remain in Place
Renovating concrete loft corridors presents a challenge since residents need uninterrupted access to their homes. We offer smart and efficient solutions that minimize disruption while ensuring a smooth renovation process.

Comprehensive Solutions in Collaboration with Clients
We assist in project planning, permitting, and execution, working together to identify the best solutions and conduct tests to ensure optimal results. Additionally, balcony renovations often coincide with other property improvement needs, such as façade work, painting, sheet metal work, and window replacements. We can package all these services into a single, comprehensive solution, providing you with one point of contact and a guarantee.

Our Balcony, Concrete, Railing, and Glazing Services Include: