The upper deck floor is also the roof of the lower saloon on 107 and is in 3 parts. The main part which you see here is the suporting structure of 12 rib assemblies. Thesea re made from ash and are bent to their correct radius before assembly. On top of these goes a layer of pitch pine cileing planks which are stained and varnished and then covered with waterproof canvas. The final layer is tongue and grroved floorboards which overhang the ends of the tram. here the old structure hs been reoved in April 2006. 3 of the ribs had rotted or been cut where a stove chimney had been put through when the tram was a summerhouse.