Here is a Granwood sports floor that we sanded and sealed at Stanborough School in Welwyn Garden City, Hertfordshire. The Granwood sports floor is still awaiting its final coat. We also installed and painted the court markings onto the Granwood floor. Peak Flooring are specialists in Granwood floor sanding and refurbishment. It normally takes 6 days to complete a full sand, seal and relining of a sports hall floor.