- Climate - If your window faces south, it will be subject to direct sunlight for a lot of the day. This tends to cause the sealed unit to fail more quickly – a south-facing window may last between 10-25 years. This is because the spacer bars will twist as the temperature rises and causes the adhesive holding them together to eventually fail.
- Moisture - Windows in kitchens and bathrooms tend to fail more quickly because they come into contact with moisture more often. For example, if water gets on your windowsill when you shower, the seal around the glass will come loose more quickly if it’s constantly wet.
Heriot
Heriot is a little town in the Moorfoot Hills southeast of Edinburgh, Scotland, within Eildon (part of the Scottish Boundaries council area, though historically in Midlothian). The town comprises some 150 homes, spread over a geographical location of around 50 square miles (130 km2), most of which is moorland. Connected to the rest of the world primarily through the A7 roadway, Heriot had a train station from 1849 till the branch line closures prompted by Beeching triggered the track to be uplifted in the 1960s. The Scottish Parliament voted, in 2006, to reinstate the railway, however without a station at Heriot. The School (as of Sept 2016) has 36 students. There are numerous neighborhood groups operating in the town consisting of dramatization groups, WRI, a neighborhood choir as well as a martial arts club. Places near to Heriot consist of Borthwick, Carcant, Crichton, Fala, Stow of Wedale and Innerleithen.