Over the last decade, the number of PVCu window manufacturers has decreased. New companies have entered the market, manufacturing thousands a week – at a very low cost. While this is great for the customer, a low price doesn’t necessarily mean it’s of high quality.

If you can, try to choose a company that makes their own windows. You might pay a few more dollars, but it will be worth it to have your new double glazed windows and doors custom made for your house.