The Shingles for a Hip Roof calculator computes the number of standard and ridge shingles for a hip roof based on the dimensions.
INSTRUCTIONS: Choose units and enter the following:
- (S) Span of Roof
- (L) Length of Roof
- (P) Pitch (choose pitch from list)
- (oH) Overhang
- (uP) Unit Price of Shingles (per bundle)
Hip Roof Shingles (sA): The calculator returns the following:
- (TA) roof area in square feet (ft2).
- (nB) number of bundles of shingles to cover roof
- (TC) total cost of shingles in U.S. dollars
Note: these can be automatically converted to compatible units via the pull-down menu.
The Math / Science
A hip roof is basically a rectangular trapezoid volume has regular trapezoids in the front and back and triangles on the sides. The bottom and top rectangles are centered, form parallel planes and separated by the height. Ridge shingles are used on the top ridge and on the hip ridges. This algorithm also accounts for a double row of shingle on the bottom drip edge.
The number of roofing nails is based on the two factors, one for normal wind conditions and one for high wind conditions. For normal wind, the algorithm uses 348 nails per 100 ft2 based on the nailing patter shown below. For high wind conditions, the algorithm uses 522 nails per 100 ft2 based on the nailing pattern below.
Single Price Survey Data
One should use the pricing for roofing materials that can be bought locally. However, the following prices are for different quality grades of shingles in the United States. The 3 Tab and Architectural Shingles Cost Survey lists the observed price of a bundle of shingles. A bundle of shingles is 33.33 ft2 for 3-tab shingles or 32.8 ft2 for architectural shingles. The survey includes a date, the name of the store. the five price points for shingles: economy, low, median, high and premium.
3 Tab and Architectural Shingles
- Shingle Price Survey Online Source : Lowes
- Shingle Price Survey Date: 12/22/22
- Cost of Premium Shingles: $90.0 USD.
- Cost of High Grade Shingles: $52.34 USD.
- Cost of Medium Grade Shingles: $43.32 USD.
- Cost of Low Grade Shingles: $37.98 USD.
- Cost of Economy Grade Shingles: $36.0 USD.
Ridge Shingle and Starter Shingle (strips):
- Price Survey Online Source : Lowes
- Price Survey Date: 12/28/22
- Cost of High Priced Ridge Shingles: $3.51 USD / ft.
- Cost of Medium Priced Ridge Shingles: $2.4 USD / ft.
- Cost of LOW Price Ridge Shingles: $1.42 USD / ft.
- Cost of High Priced Starter Shingles: $1.47 USD / ft.
- Cost of Medium Priced Starter Shingles: $0.93 USD / ft.
- Cost of LOW Grade Starter Shingles: $0.4 USD / ft.
The pricing data is gathered periodically from nationally advertised prices on the websites of DIY providers such as (Lowes and Home Depot). The data is saved in a vCalc data repository (table), and for the use of vCalc users.
NOTE: Local pricing should ALWAYS, ALWAYS, ALWAYS be used! These price points are for estimation convenience only, and there is no guarantee on the prices of the product nor of their availability at the stated price.
Roof Types
