Mono Pitch Roof Framing

Roof plane bracing and roof space bracing as alternatives.

Mono pitch roof framing.

Back then local lumberyards stocked mono slope ridge flashing that looked like oversized drip edge. 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. The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases. 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.

The minimum roof pitch is 1 8 inch rise per foot of span. They differ considerably from the conventional gabled roofs in shape and construction. Measure the outline of the structure to be roofed with a tape measure or get dimensions from a house plan. Scissors provides a cathedral or vaulted ceiling.

It is also easier to insulate a roof with a greater pitch. Also in pairs with their high ends abutting on extremely long spans with a support underneath the high end. Homes with a mono pitch roof are usually designed with large windows or multiple windows to take advantage of natural light. Step 1 use prefabricated mono trusses for the easiest and best framing on a single slope roof.

Mono used where the roof is required to slope only in one direction. The standard roof truss spacing is 2. 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. The high back wall below the ridge of the monopitch roof must be braced to the full height of the wall not shown.

Ceiling support framing and dwangs omitted for clarity. Pitch can vary a great deal from a shallow slope up to a very steep pitch. Fascia board fascia board top plate. Figure 1 monopitch roof with full height braced walls.

The greater the roof s pitch the better it will shed snow ice and rain. Select an angle of slope away from a house into an area with good drainage and complementary to an existing house or other building. This is the distance between trusses. Pitch also has its own denotation determined by the rise in inches in 12 inches.

A sub variation of the mono pitch is known as saw tooth as pictured below. 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. 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. While the gabled roof is always pitched in two directions the mono pitch always slants in a single direction.

Mono pitched roofs are also known by the names of skillion roofs shed roofs pent roof and lean to roof. For instance a 4 12 pitch denotes. Which is equal to 1 4 or 1 3 the total span of the building not counting any overhang. Common truss configurations for the most widely designed roof shapes.