Flat roof renovation: Improved energy efficiency renovation for sustainable climate protection
Increasing extreme weather events and the natural aging process of a flat roof weaken the building's thermal insulation over time. As a result, renovations are becoming increasingly important, particularly about energy efficiency and the associated climate protection. In this article, energy expert Thomas Brandl explains the benefits of energy-efficient flat roof renovation and why it is better to act too early than too late.
Early flat roof renovation saves time and money
When it comes to renovation, most people often think of the negative: after the last rain shower, water suddenly collects on the floor of the industrial building. Or the heating costs in the residential building seem to rise immeasurably because it has already seen its best days. We often associate a renovation case with leaks and defects in the roof caused by cracks and porosity. Extreme weather events are catalysts for damage to flat roofs, but the natural ageing process catches up with every house at some point. Poor materials or inadequate insulation also support this.
Should these scenarios actually come to occur, action must be taken as quickly as possible, as the statics of the entire building as well as the energy efficiency and fall-through safety are compromised. Thomas Brandl also knows that the renovation of flat roofs and the integrated daylight, fresh air or smoke and heat extraction systems (SHEVS) are therefore becoming increasingly important. He is an energy consultant from Neumarkt in der Oberpfalz, Germany, and has been involved in numerous renovation projects. He knows exactly when owners of older buildings should take action: "Better too early than too late, because a timely inspection and renovation usually saves not only time, but also money. It doesn't have to be an emergency, because early intervention not only helps to prevent major structural damage to the building, but also saves on heating costs and effectively increases living comfort.
Insulation as the greatest energy-saving potential when it comes to energy efficient renovation
This early renovation in favour of energy savings is also known as energy-efficient renovation. This primarily includes the use of solar thermal energy to generate heat, the use of photovoltaics and, above all, renewing or improving the insulation. ‘In many buildings, the insulation of the façade offers the greatest savings potential, followed by the roof area. Heat loss can be minimised with an energy-efficient flat roof renovation using state-of-the-art technology,’ explains Thomas Brandl. Consequently, a flat roof renovation offers great potential for improving the energy efficiency of a building. However, the owner should also bear a few things in mind, as the insulation must comply with the current standards of the German Building Energy Act (GEG), says Brandl: ‘It is important to select suitable insulation materials, ensure airtight sealing of roof edges, skylights and other openings on the roof and avoid thermal bridges as far as possible by ensuring that the connection between the roof and the thermal insulation is seamless at best.’ Flat roofs are mainly found on industrial and commercial buildings, which are increasingly being converted into living space. According to expert Thomas Brandl, planners and building owners should adapt the thermal insulation and safety requirements accordingly in this case: ‘It is particularly important to check whether the existing insulation is sufficient for the current use.’
Advantages of flat roof renovation – energy efficient renovation
However, flat roof renovations are often postponed due to the supposedly high costs. According to Thomas Brandl, flat roof renovations are always a worthwhile investment, as a modern, refurbished roof contributes significantly to increasing the value of the property: ‘A flat roof renovation offers numerous advantages, such as better lighting and ventilation of the rooms, as well as noticeable cost savings due to the reduced heating requirements.’ The energy expert knows that daylight systems installed during a flat roof renovation have a particularly positive effect on the overall consumption of a building: ‘Well-placed skylights can help to reduce the energy requirements of a building by allowing the natural light and warmth of the sun to be used as an energy source in the room.’ Particularly in the cool and dark months, this can reduce consumption for lighting and heating and increase the well-being of residents or employees.
Energy status of a building
The energy consultant recommends the following to determine the current energy status of a building and derive appropriate renovation measures: ‘To begin with, an expert should always carry out an on-site survey. This involves recording important points such as the U-values of the building components, airtightness, system technology and energy consumption.’ According to Brandl, this information ultimately forms the basis of a step-by-step and comprehensive renovation roadmap that considers the respective weak points and potential of a building. The energy expert also has a tip for all affected owners: ‘I recommend that building owners seek professional advice and support from experts.’ In this way, planning and cost control can be guaranteed as well as possible: ‘With the right expertise, the renovation process can be carried out without disrupting the processes in the building.’
Flat roof renovation done easily with LAMILUX
The daylight system manufacturer LAMILUX guarantees support and professional advice for renovation projects. Thanks to decades of experience, intensive research and development in close cooperation with its customers, LAMILUX is recognised as an expert in the field of flat roof renovation and has a comprehensive product portfolio that meets the highest quality standards. Energy-efficient and passive house-certified products such as the LAMILUX Glass Roof PR60 Passivhaus, the LAMILUX Continuous Rooflight B, the LAMILUX Continuous Rooflight S Energyline and the LAMILUX Flat Roof Window FE Passive House are ideal for new buildings and energy-efficient renovations. Thanks to their excellent insulation values, they reduce energy costs and thus make a significant contribution to promoting climate protection. The variety of LAMILUX renovation frames makes it possible to exchange system solutions individually and to add an existing upstand on site according to a modular principle. By integrating an extension element, the roof structure is raised and thus achieves an increase in insulation and better energy values in the building.
This is followed by the daylight systems, which the roofers connect to the substructure. LAMILUX has also documented the sustainability of its products in so-called EPDs (Environmental Product Declarations), which are based on their life cycle assessment. The manufacturer also combines these daylight systems with photovoltaic modules.
Renovation service for durable flat roofs
Experienced specialists from LAMILUX support building owners and architects with their expert knowledge during the entire implementation process, from analysis and planning through to the production and installation of the renovation solutions. The planners of the Factory Campus Düsseldorf, a coworking space covering 34,000 square metres, were also pleased to receive this support. The architectural concept behind it: sustainable, climate-neutral and flooded with light. The former machine factory in the Lierenfeld district, which is made up of various building sections, has been undergoing renovation and renovation since 2016. The Boulevard building promises new, light-flooded working environments and represents the soul of the coworking space. The highlight of the building is the LAMILUX Glass Roof PR60. The new design of the glass roof, which extends over almost the entire building, will provide the areas below with sufficient daylight in the future. It thus creates the desired ventilation comfort and a creative and inspiring working environment.
Increased energy efficiency thanks to insulation and daylight systems
Early renovation of flat roofs not only prevents major damage and high energy costs, but also increases the value of a property. Improved insulation and the use of modern daylight systems in particular make a significant contribution to energy efficiency and improved living comfort. LAMILUX offers comprehensive solutions for renovation - from consultation and planning through to implementation. Owners also benefit from state subsidy programs that offer financial support for energy-efficient renovations. In this way, the cost-effectiveness of the measures can be further increased, and the buildings can be designed efficiently and sustainably in the long term. Are you also planning to renovate? You can find out more about energy efficient flat roof renovation on our website!