Is A Valley Rafter Needed On A Hip Roof?

Is A Valley Rafter Needed On A Hip Roof?

Is A Valley Rafter Needed On A Hip Roof?

Yes, a hip rafter is only required when building a hip roof, but a valley rafter is required where roof planes connect on both hip and gable roofs. It is termed a valley rafter because it is applied in the valley of the roof.

The valley rafter supports the longitudinal centerline of the roof, which is a critical component of all roofs. The valley rafter is supported by the hips and valleys of both adjoining roof planes. Each hip rafter supports its valley rafter in addition to its roof load.

What Are The Common Hip Roof Types?

There are five common hip roof designs:

Simple Hip Roofs- These are the most typical hip roof designs, with a ridge over a section of the roof creating two polygon sides and two triangle sides.

Pyramid hip roof- This hip roof design, also known as a pavilion roof, produces a pyramid on the top of a structure. Because the roof’s four sides are equal, they meet at a central peak at the top.

The square pyramid roof is the most common and simplest of all pyramid hip roofs, with each horizontal layer decreasing in size, like a slice of pizza. It has four sides and a square base.

The four-sided hip roof has the same structure as the square pyramid, but its four sides are not all equal. The sizes of the sides increase from front to back and from bottom to top, with larger sizes at both ends of the roof.

Cross-hipped roof- This hip roof design has two sides that shed water down toward the ground and are called the hips.

The other two sides meet at the ridge and run straight across to drain water on a level plane called the “ridge line.” This roof design is also referred to as a cross-gable roof.

Half-hipped roof- This popular roof design is called a “saltbox” and combines a gable and hip roof. It’s shaped like a rectangle with shorter lengths added to the sides.

Dutch gable (hip) roof- This type of hip roof design is also commonly referred to as a Dutch gable (hip) roof and combines a gable and hip roof.

It’s shaped like a rectangle with shorter lengths added to the sides. The eaves on these roofs are longer than on other hip roofs, giving it a distinctive appearance.

Is Hip To Gable Roof Permitted Development?

Hip-to-gable loft additions are often given development rights. This means you must have your planning drawings available to file for a Certificate of Lawfulness (COL). This certificate serves as proof that the conversion is legal under Permitted Development.

The planning authorities will ask that you provide a set of drawings and your planning justification file.

To follow up on the critical aspects of hip-to-gable conversions, you should have a set of planning drawings for the loft conversion. This will ensure that you can obtain all necessary permits for the work, thereby avoiding enforcement action against your loft conversion.

If you do not require planning permission to carry out an extension on your property and are not de-regulating your existing loft space, then there is no need for you to submit detailed plans.

To determine if your work requires planning permission or “Permitted Development Rights” (PDR), it is advisable to have a professional assessment made.

To this end, your building inspector will assess whether your proposed work falls under the local authority’s “design and access” policy.

Although some loft conversions will not require planning permission to carry out, it is advisable to obtain expert advice if you have concerns about whether your conversion is compatible with the local building code

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