Sliding sash windows are a classic feature of many older style properties. However, traditional sash windows can be draughty and difficult to maintain. MLI offers a range of energy efficient aluminium sliding sash windows that recapture the charm of this timeless design. Our windows are made from high quality materials and are expertly finished to provide a low maintenance solution that will stand the test of time. Our windows also come with a range of security features as standard, ensuring your property is safe as well as stylish. So if you’re looking for an attractive and practical window solution, look no further than MLI.