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You will need a sill if you need to cover the cavity or any rough brickwork and remove any excess water from the face of the brickwork. Our uPVC sliding sash windows come with a sill as standard. However, if the sash window is installed onto an existing sill, you have the option to request a none-projecting sill.
Please note, our news articles are relevant and accurate at the time of release, but as technical developments dictate, and times goes by the information in this article may no longer be applicable. If you have questions, please contact us using our online contact form or call us on 03332 412 240.