It will come as no surprise to learn that modern windows are primarily intended to be ‘warm’. This means that they are not supposed to allow warm air to escape from the house. This parameter is described by the heat transfer coefficient Uw, which gives us the answer to the question of how much heat escapes through the window due to the difference in external and internal temperatures.
In other words, aluminum profiles with relatively thick surface material often look better and sturdier than the reverse.
Sliding door runner wheels are designed to facilitate the smooth movement of sliding doors along their tracks. These wheels are typically mounted on the top or bottom of the door and roll along a rail or track. Properly functioning runner wheels ensure that doors open and close effortlessly, which is particularly important in high-traffic areas. Over time, however, these wheels can wear down, leading to frustrating sticking or off-track situations.