PVC Window Profiles AD and MD. What should you know about them?
PVC Window Profiles AD and MD. What should you know about them?The selection of appropriate PVC window profiles is fundamental for durable, energy-efficient, and aesthetically pleasing window joinery. One of the key criteria for classifying profiles is the sealing method and number of seals. In this context, we distinguish two main systems: AD (Anschlag Dichtung - rebate gasket) and MD (Mittel Dichtung - middle gasket). Understanding these differences will enable you to professionally advise clients, ensuring they make a conscious choice. AD system – rebate gasket Window profiles in the AD system are characterized by two rebate gaskets. These gaskets are located on the external and internal sides - one on the frame on the external side, and the other on the sash on the internal side.
Advantages of AD systems: Simple construction - a smaller number of sealing elements simplifies the production process. Good level of insulation - with the use of appropriate glazing units and high-quality profiles, the AD system provides a satisfactory level of thermal and acoustic insulation for many applications. Proven technology - the AD system is widely used and well-known in the market. MD system – middle gasket Window profiles in the MD system have three gaskets. In addition to the two rebate gaskets (external and internal), the characteristic feature is an additional, middle gasket located in the central part of the contact between the frame and the window sash. Advantages of MD systems: Exceptional thermal insulation - the additional middle gasket significantly reduces thermal bridges, contributing to lower heating costs and increased thermal comfort. Excellent acoustic insulation - three gaskets more effectively dampen noise from the outside, creating quiet and peaceful interiors. Better protection against wind and rain - the middle gasket increases the tightness of the window, protecting against drafts. Higher stability and durability - the additional gasket can contribute to greater stability of the window sash.
AD or MD – which system to choose? The decision to choose the AD or MD system depends on individual needs and priorities: Budget. If price is a key factor, the AD system may be a more attractive solution, offering a good standard of insulation. Energy requirements. For energy-efficient and passive houses, the MD system with three gaskets will be a better choice due to its higher thermal insulation. Noise level. In locations with high noise levels, the MD system will provide better acoustic comfort. Exposure to weather conditions. In places exposed to strong winds and heavy rainfall, the MD system with an additional gasket will provide better protection. Summary Both AD and MD systems have their advantages and are used in various construction projects. Choosing the appropriate PVC window profile system, taking into account the sealing method and number of seals, is crucial for ensuring comfort, energy efficiency, and the durability of windows. To find the best solution for individual customer needs - ask your sales representative.
