MIDDLE SPINE STAIRS 10 - GU10, Farnham Proposed construction of middle spine stairs decorated in light beige color. Treads are made from engineered oak flooring stained into a special dark brown stain mix. Frameless glass balustrade to the stairs run and landing area using 15mm clear toughened glass panels. The appearance of the stairs is completed with a timber handrail extended to the first tread.