UK Windows and Double Glazing Services Guide

Thermal & acoustic insulation are the key benefits that double glazing offers.

Be aware that replacing windows can change the appearance of your home considerably. Ensure that you choose a style that matches your property and enhances its looks.

This is particularly important with UPVC and aluminium designs when they are fitted to older properties. For many period home owners replacement upvc or aluminium double glazed windows are an unacceptable option as they detract from the authentic charm of the property. If you are an owner of a period home you should consider adding authentic replica sashes into your existing frames, paint finished and double glazed with energy efficient glass.

It's always a good idea to look at properties similar to yours in the area and compare the effect of various replacement window types. It is also a good idea to make sure you have adequate numbers of opening windows. It's been known for some salespeople to promote designs with very few openings and of a very simple nature. The simpler the design and the fewer the openings - the "cheaper" the window. Whilst you may end up with a price you like it's more likely you will regret this option in the end - especially as badly designed windows can turn out to be a very bad investment and even lower the value of a property.

Always ask your supplier how long the delivery will be.

Don't accept the first price you are quoted. Get at least three estimates if you have the time. Research all of the alternatives in terms of product and style.

Check out the Guarantee and what it covers. A lot of companies now offer "insurance backed" guarantees. Do note however that these are really Insolvency Guarantees and only become effective if a company should go out of business. Most guarantees will give a 10-year cover on the frames but you may find that the cover for the double glazed unit is 5 years. It's always best to ask a potential supplier to be specific (in writing) about these issues.