Boulder Historic Places Plan

Roof Framing The original portion of the farmhouse has a hip roof with a 8:12 pitch and one hip-roofed dormer on the north elevation and a low sloped hip porch roof to the north. The primary roof is framed with 2” x 3 1/2” rafters spaced at approximately 24” with rafter ties of the same dimensions running in the north-south direction. The roofs of the additions are monosloped shed roofs; the first addition, framed of 2x6 rafters at 16”on center, has a 4:12 pitch, steeper than the second shed roof that has a 1.5:12 pitch and is framed with 2x4 rafters at 24” on center. The is no sagging or deflection to indicate structural problems with the roof; however, the second addition roof does not meet current Code load capacity requirements. Several of the ends of the roof rafters of the second, southernmost addition have rotted, which are exposed to the elements at the rear of the building where the fascia board is missing. The metal roof has a significant amount of rust, especially on the lower sloped addition and porch roofs. As this worsens, openings can form, allowing moisture to enter the roof and damage the framing. Floor Framing The floor system in the original farmhouse consists of full sawn 2” x 8” (actual dimension) joists spaced at 16” on center that span in the north-south direction between the stone stem foundation walls and a large timber resting on grade at approximately the mid-point of the original building. The first addition floor system visible in the basement consists of nominal 2 x 8 joists spaced at 16” also in the north-south direction between foundation walls. The joists bear directly on the stone walls; there is no wood sill plate. The floor framing in the second addition is dimensional lumber spanning in the east-west direction. The floor systems appear in good condition. The timber supporting the floor joists in the original part of the farmhouse is resting on grade with no vapor barrier. This condition can harbor moisture against the wood member and encourage decay fungi to flourish.

Figure 1-24. Original house roof framing, 2020 (source: JVA)

Figure 1-25. Back of Roney House, note rusted metal roof, 2020 (source: JVA)

5-20

Roney Farmhouse

Made with FlippingBook Ebook Creator