- Do not go for the cheapest quotation. There's a price point below which you'll be buying rubbish.
- Do not try to beat the price down too much. Less professional suppliers will agree to it, but sell you short later. Get the best you can afford.
- Match the double glazing design to your home. It should look as if it's always been there, rather than just stuck on.
- Double-glazed windows come in a variety of sizes and styles. Check for any restrictions on your house due to age and location.
- Look at properties similar to yours in the area and compare the effect of various replacement window types.
- Sometimes planning permission may be required, in the case in listed buildings and conservation areas. Also if you are converting a flat window into a bay window. Check this with the local authority.
- Fitting double-glazing when your existing window frames need replacing will save you time and money. Secondary glazing is less expensive than replacement double-glazing and will still save you around £30 a year in heating bills.
- Make sure you have adequate numbers of opening windows. The simpler the design and the fewer the openings - the cheaper the window. Badly designed windows can lower the value of a property.
- Ask your supplier how long the delivery will be. Have this stipulated on your contract. - Ask for an estimate of how long the work will take to complete once they are on-site.
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