Mono Pitch Roof Framing

Figure 1 monopitch roof with full height braced walls.

Mono pitch roof framing.

Common truss configurations for the most widely designed roof shapes. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. But instead of being installed before the roofing in the usual drip edge fashion mono slope flashing is installed with the roof leg on top of the roofing and the vertical leg extending down over the fascia. The minimum roof pitch is 1 8 inch rise per foot of span.

Also in pairs with their high ends abutting on extremely long spans with a support underneath the high end. Step 1 use prefabricated mono trusses for the easiest and best framing on a single slope roof. This is the distance between trusses. The total rise is 12 inches or 1 foot and the span is 4 feet so the pitch would be 1 4 or a quarter pitch roof.

Fascia board fascia board top plate. Mono used where the roof is required to slope only in one direction. Which is equal to 1 4 or 1 3 the total span of the building not counting any overhang. Ceiling support framing and dwangs omitted for clarity.

Select an angle of slope away from a house into an area with good drainage and complementary to an existing house or other building. You will also incur additional costs because it is much harder to deck and shingle a roof that is 12 12 pitch versus a 4 12 roof. The high back wall below the ridge of the monopitch roof must be braced to the full height of the wall not shown. In this video i just want to quickly show you how you can mark out the position of your birdsmouth on a skillion or flat or what else they call a mono slope mono pitch roof.

Scissors provides a cathedral or vaulted ceiling. Homes with a mono pitch roof are usually designed with large windows or multiple windows to take advantage of natural light. A sub variation of the mono pitch is known as saw tooth as pictured below. Back then local lumberyards stocked mono slope ridge flashing that looked like oversized drip edge.

For instance a 4 12 pitch denotes. This is the low end we ve extended this end up however as i said in our previous video this is not the best practice. While the gabled roof is always pitched in two directions the mono pitch always slants in a single direction. It is also easier to insulate a roof with a greater pitch.

How to scribe mono pitch roof rafters. Pitch for a gable roof the most common is generally 1 4 or 1 3. Mono pitched roofs are also known by the names of skillion roofs shed roofs pent roof and lean to roof. Here s my top plate as you can see.

Roof plane bracing and roof space bracing as alternatives. The standard roof truss spacing is 2. Measure the outline of the structure to be roofed with a tape measure or get dimensions from a house plan. Pitch also has its own denotation determined by the rise in inches in 12 inches.