Siloa Welsh Independent Chapel was built in 1868 by Thomas Jones of Dolau. It has a colourwashed stuccoed exterior below a roof of Welsh slate. The chapel is entered via a gabled stuccoed porch with an arched doorway, adjoining the lateral facade. Flanking the porch are four long arched windows with eight panes each and Y-tracery heads, beneath moulded hoods with keystones and stops.
The chapel interior is simple and ungalleried, with two blocks of painted grained numbered box pews with simple panel backs and doors, slightly raked to the rear. There are further box pews to either side of the set fawr, with continuous panelling across the back of the set fawr and the pew doors. The small pulpit has canted angles, vertical panels and moulded cornice. Behind the pulpit is a painted arch. The ceiling is plastered and painted with sloping sides and the lower part of the two collar trusses is visible.

Source: Cadw Listed Building Record
RCAHMW Inventory Documents

K Steele, RCAHMW, 23 March 2009