For tall buildings reflecting solar heat is the best option asÂ shading By reflecting heat away from the building, the need to cool the inside of the building is lessened. Additionally, in colder months, Low-E coatings help reduce heat inside from leaking out. After-market reflective window film has a similar effect, and these films can be a more cost-effective measure than replacing your propertys non-Low-E coated windows, as standard Low-E coated single-glazing windows will make a noticeable impact. Tinted glass absorbs a large fraction of incoming solar radiation through a window, reflective coatings reduce the transmission of solar radiation, and spectrally selective coatings filter out 40% to 70% of the heat normally transmitted through insulated window glass or glazing, while allowing the full amount of light to be transmitted. If replacement of aged, inefficient commercial windows is a consideration, double-glazed windows with Low-E coating greatly reduce overall heating and cooling costs, and the most efficient triple-glazed windows are also an option.
According to Nick Pastras, from Smart Cleaning Solutions, "Some customers with large corporate buildings have reported savings in the vicinity of 1-2%, not to mention clean windows are much nicer to look through" he said. Inspect Seals and Weatherstripping Today’s window sealants are built to last, yet the materials weren’t always as reliable