If you’re a business and don’t currently have Double Glazed Windows then why the heck not? You could be potentially losing thousands of pounds through poor insulation. Has your office become expensive to heat and maintain at that heat, this is probably due to your poor quality windows. In this article, we look at the most popular windows & which ones are the most cost-effective for commercial customers. If you’re wondering what the cost of UPVC Windows are then we read our guide!