Types of thresholds in PVC joinery

The falling threshold is a component that is fixed at the bottom of the sash and acts as a seal when closed. When closing, the threshold seal is automatically pressed against the surface/floor. Thanks to this type of sealing, your door does not have the obstacle of a threshold when opened.

Low thresholdLow thresholds are usually made of aluminium or PVC. They can be used in:balcony doors, turning doors, sliding doors, Lift-and-slide doors. Lowering the threshold to around 2 cm significantly improves your safety and comfort when crossing. Threshold-free terrace solutionsSome systems have an option to recess the frame into the floor. This is known as sinking the threshold into the layers. However, this arrangement of insulation layers must be well thought out in order to maintain an efficient energy standard. Here, the threshold is concealed in the floor. This solution is used for sliding and lift-and-slide systems, as well as some classic window frames. In order to achieve a threshold-free balcony transition, it is also possible to make a balcony door with a falling threshold (gasket) and a transition with finishing material without the need for a threshold "cut-off".flooring on the outsidethreshold drainagefinished flooring inside the roommagnetic double sealAdvantages and disadvantages of a low or no threshold: Advantages:convenience and comfort, safety (due to elimination of tripping over the frame), no barriers, easier to keep clean, highly aesthetic, maximum clear opening size. Disadvantages:in the case of incorrect installation, the possibility of thermal bridging, freezing, dampness, problems with the use of the door itself, slightly more time-consuming installation, easier access of pollutants from outside due to the lack of a barrier for them. When choosing such a solution, remember to:drainage of rainwater, preventing snow from building up on terrace doors (which can cause the sash to freeze on the threshold), an additional option for standard patio doors, a canopy which is worth installing over the structureThermal insulation The tight contact between the threshold and the sash, proper installation, correctly selected insulation layers and the thermal insulation of the threshold itself are conditions that contribute to the lack of heat loss. It is worth using elements that improve the situation in this vulnerable area, such as purenit, additional gaskets, thermal breaks or insulators. A cold threshold is a thermal bridge that causes heat loss despite warm windows and good insulation of the walls, terrace or floor. The longer the window, the longer the section where such a thermal bridge can occur. It may be worth considering using a system extension with a thermal break, purenite or an under-sill profile. Setting a low threshold directly on concrete blocks will result in losses in the future. Warm door thresholdsWe offer you the installation of a warm threshold in two variants. You can choose to install it with insulating material or on a PVC system extension. In both cases, you will gain proper thermal insulation below the floor. This solution prevents the formation of thermal bridges, thus preventing the cold air from entering the room.door systemfinished flooring inside the roomexterior flooringdoor thresholdthermal insulation materialdoor systemfinished flooring inside the roomexterior flooringdoor thresholdsystem extensionYou can find the full range of pvc thresholds in the technical catalogue.