Double Glazing Archive Pages
Make your choice based on the calibre of the company and whether your think they'll be around in the future to honor their guarantees. Most companies offer perfectly good products with optional extras such as Pilkington K Glass and better security locking. Base your buying decision on this.
Pilkington K glass has coating on the outside that prevents most grime attaching to the windows. You just need to hose them down every so often to clean them. The rain does the rest for you.
Double glazing reduces heat loss and noise pollution by trapping a layer of air between two glass panes in the window. This is much more effective at insulation from noise and cold. The inner pane of glass stays warmer than the outside pane which reduces condensation. Two common types of double glazing are factory-sealed units and secondary glazing. The most popular form of DIY double glazing is secondary double glazing as it is easiest to fit and usually cheaper as well. Secondary double glazing is suitable for almost any style or shape of window.
You should choose a style that matches your property and enhances its appearance. This is particularly important with PVCu and Aluminium designs when they are fitted to older properties.