The standard roof truss spacing is 2.
Mono pitch roof framing.
Pitch for a gable roof the most common is generally 1 4 or 1 3.
Ceiling support framing and dwangs omitted for clarity.
Pitch also has its own denotation determined by the rise in inches in 12 inches.
While the gabled roof is always pitched in two directions the mono pitch always slants in a single direction.
How to scribe mono pitch roof rafters.
Figure 1 monopitch roof with full height braced walls.
Scissors provides a cathedral or vaulted ceiling.
It is also easier to insulate a roof with a greater pitch.
Mono used where the roof is required to slope only in one direction.
Back then local lumberyards stocked mono slope ridge flashing that looked like oversized drip edge.
Step 1 use prefabricated mono trusses for the easiest and best framing on a single slope roof.
For instance a 4 12 pitch denotes.
Pitch can vary a great deal from a shallow slope up to a very steep pitch.
A sub variation of the mono pitch is known as saw tooth as pictured below.
Here s my top plate as you can see.
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.
Mono pitched roofs are also known by the names of skillion roofs shed roofs pent roof and lean to roof.
Fascia board fascia board top plate.
The greater the roof s pitch the better it will shed snow ice and rain.
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.
Measure the outline of the structure to be roofed with a tape measure or get dimensions from a house plan.
The high back wall below the ridge of the monopitch roof must be braced to the full height of the wall not shown.
Homes with a mono pitch roof are usually designed with large windows or multiple windows to take advantage of natural light.
Select an angle of slope away from a house into an area with good drainage and complementary to an existing house or other building.
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.
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.
They differ considerably from the conventional gabled roofs in shape and construction.
Common truss configurations for the most widely designed roof shapes.
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.
Also in pairs with their high ends abutting on extremely long spans with a support underneath the high end.
Which is equal to 1 4 or 1 3 the total span of the building not counting any overhang.
The steeper the roof the more expensive the trusses get because the longer the boards get and the more roof area increases.
