Vertical sliding secondary glazing are perfect for sash windows as they are able to adhere to current web page lines, that means it can mirror the appear of your recent Home windows rendering it really aesthetically satisfying and non obtrusive. Power Performance – Double glazing generally gives greater General insulation, https://energyperformancecertific85296.losblogos.com/35946946/rumored-buzz-on-fire-rated-secondary-glazing