Low Slope Roof Framing

Less wind force impact but sheds snow rain and debris slowly.

Low slope roof framing.

Low slope has a slope between 2 12 and 4 14 is usually covered with rated shingles or steel. Mark truss locations on the front and back wall caps of the structure. May require a special drainage system. Flat roof has a slope of 2 12 or less it is usually covered with metal or a membrane.

There are 3 main types of roofs. 1 cover the entire surface with a self adhesive flashing membrane such as grace ice water shield there are many. Very little to no wind force but very slow to shed snow or rainwater. Measure the outline of the structure to be roofed.

Standing water is a primary source of roof cover discoloration and deterioration that may result in framing member damage and contribute to premature failure of the structural system on low slope roofs. For a low slope residential roof there are two main options. Use prefabricated mono trusses for the easiest and best framing on a single slope roof. Differences associated with roofs having continuous insulation on top of the deck will also be reviewed as will methods for ensuring.

This is denoted two ways a 1 3 or 1 4 pitch in fractions and a 6 12 pitch in inches which means the roof rises 6 inches for each 12 inches of run. Just like any other roofing system low slope roof designs will have several effects on the overall construction of the building including the interior volume the style and design of the house the drainage system and the material used for covering. In retrofit projects a sub framing system is attached to the existing flat roof surface to provide a minimum 12 roof pitch. Venting requirements and detailing approaches to providing appropriate venting paths will be covered for roofs with attic insulation.

How to frame a single slope roof. 2 where the roof is not visible consider upgrading to a single ply roofing intended for low slope roofs. A low slope roof design typically has a pitch of between 2 12 and 4 12. On low slope wood frame roofs.

Pitch is the amount of angle or slope the roof has. For lower pitches a built up or continuous roll roofing must be applied to keep the roof waterproof. When design constraints necessitate a 1 4 in 12 design slope be used the framing members should be cambered or investigated for ponding. Get on a ladder with a tape measure.

It s constructed of a durable reinforcing mat of non woven glass fibers that have been coated and permeated to a thickness of approximately 2 0 mm.