Core Sash Windows are a leading supplier of double glazing services and supply & fit Double Glazed Windows and Double Glazed Doors across all areas of London...
We are one of the only companies in London that carry out traditional sand & cement pointing, giving your windows a timeless appeal...
We understand the importance of a reliable supplier in your construction or renovation project. With us, you have a dedicated partner who ensure that the key elements described below are consistently delivered to all our clients, regardless of the size of your job.