Box Sash Windows

All Timber Windows Norfolk Window products are manufactured to the highest quality, and have 60 Years+ Service Life, under Low Maintenance regime up to 80 in less exposed areas. When you choose our high specification Timber Windows, you can be sure that they will provide Style and Endurance for years to come. Due to the modern manufacturing process and the Service Life, TWN’s Windows are Carbon Negative. Our products are designed to save money and CO², whilst meeting and exceeding, the Energy Efficiency Standards in the UK Building Regulations Recommendations.