Valley Jack Roof Definition

A short rafter running parallel to common rafters cut between hip and valley rafters.

Valley jack roof definition.

Noun a short rafter. The roof of irregular shaped buildings. It seems as though the terminology of these rafters seems to change not so much as country to country but cripple rafter state to state and team of roofers to team. The total rise of hip and valley rafters is the same as that of common rafters.

Definition of valley rafter or cripple jack rafter. An intersecting roof with unequal spans requires a supporting valley rafter to run from the inside corner. Valleys are typically found where gable dormer roofs meet the main roof or when a house has angled wings or additions where two roof sections in different planes meet. This is because the old valleys used to be galvanised and they start corroding with time especially if they trap leaves.

Beams that are placed between hip rafter and valley rafter. Similarly jack rafters sometimes get referred to as either hip or valley. A direction to the side at about 90 degrees. Formed by the intersecting ridges.

Beams that extend from the corner of the plate to the ridge. The valley area of a roof the straight lines formed when two different planes of the roof meet is a critical area that handles a tremendous amount of water run off. Typically where a valley is located on a roof roof valley replacements are fairly common especially on tiled roofs. Hip valley cripple jack rafter.

Hip valley cripple jack rafters are placed between the valley and hip rafters. One of the shorter rafters used in a hip or valley roof. Roof beams that run from the plate to the hip rafter. In the sketch above the valley rafter is drawn in yellow.

Figure 2 37 intersecting roof with unequal spans. An assembly of interacting roof components includes the roof deck vapor retarder if present insulation and roof covering. Extend from the ridge to the valley rafter. Thus there are hip jack rafters and valley jack rafters.

A metal bracket used to support toe boards on steep slope roofs. A rafter extending from the roof ridge down to the top plate of a wall at the intersection of a gable extension roof that itself abuts or intersects with the main roof. This jack does not touch the ridge or the roof plate. A jack rafter is a shortened com mon rafter that may be framed to a hip rafter a valley rafter or both.

So as a result creepers get called cripples with the addition of the terms hip or valley for good measure. Roof but a valley rafter is needed on both hip and gable roofs whenever roof planes intersect. Valleys are formed at the intersection of the roofs.