Do you mean wood stairs versus concrete? It really depends on the style of home. DO you have more information?

Already you have left space for 18mm thk single glass.. to insert inside the hollow gap.. A;so a electrical wires in been kept on top, i dont know how u where u wanna used that for, there is no sandwich type glass space over there... Wood u hav already used for panelling & u r looking for glass.. wat type to take... My suggestion will be, u go for clear toughened glass, so that on one side u can fix film, ,,, so that any time if u feel like to change the design u can. but if u for for designer glass or decorative glass, which will not alter later, that will be one time large investment for u ,,, But changing the film will not disturb the entire partition and glass , only reasonable price u can change the entire film as per latest trendz

Dear Mr. Venugopal, Since your space is limited and you want to optimize the walkway as well, some tweaks maybe followed: 1. faux turf/ synthetic moss turf / grass turf 2. Conceal spiral staircase with a pergola and wooden slats 2. Create a cozy corner by installing a gazebo, creepers and couple of swing chairs (30-50 sqft) 4. A small vertical garden alongside the stair room walls. 5. Ambient LED lighting. 6. Stone paved walkway Regards, Aurum Ideas and Spaces Bhubaneswar

connect with MS fabricators or cast iron fabricators. like the ones who make spiral staircases.