Inside of the Sikka Church there is rows of hundreds long bench made by teak wood. but above of bench rows we can see clearly the building tiles of the Church because the roof frame is made without ceiling. there are 16 poles of teak wood using for support the roof pole starting from the front up to the altar. the woods are made curved and connected by formation of conical roof. the wood structure to support this roof then refuted by cross-Shaped wood. all the wood mentioned be painted by yellow color and brown. each side of Church installed 36 woods without glass, above side installed window with small size. around 48 peach with color with color dull yellow. although Sikka old Church mostly built by wood, construction still sturdy although hit by tsunami year of 1992 in Maumere.

In all over the Church wall painted motif “Wenda” which is usually pinned to weaving as typical of Sikka. motif on the wall of church has exist since first time the church been used to mass Christmas evening of 24 December 1899 and still maintained until now. on the altar side there is particular motif in the form of namely weave a greatness clothing of the king shaped like split of ketupat or cake.