What are stormproof windows and how do they differ from standard casement windows?

Stormproof windows, also known as lipped casement windows, are designed with a unique overlapping frame and sash. This creates a robust, weather-resistant seal, offering superior protection against the UK’s often harsh weather conditions, including strong winds and heavy rain. Standard casement windows typically have a flush design, which can be more susceptible to water ingress in extreme weather. Essentially, stormproof windows offer enhanced weather performance.