Construction Math

Hip and Valley Factor Calculator, Table, and Guide

A hip on an asphalt shingle roof.

I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Introduction In this article, I’m going to explain what a hip and valley factor is, show you the math, and give you a pretty comprehensive table where you can look up the hip and valley factors …

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How to Express Roof Slope: Three Standard Methods

Table showing the different ways to express roof slope.

I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. Introduction There are three basic ways to express roof slope. Roof slope can be given in degrees, as a percentage, or as a rise-in-run ratio, otherwise known as standard roof pitch. 1. When you express roof …

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Roof Pitch Multiplier: Calculator, Table & Guide

I participate in the Amazon affiliate program and may earn commissions from purchases made through links on this page. What is a Roof Pitch Multiplier? A roof pitch multiplier, also called a roof pitch factor, is a number that you use to find the actual surface area of a pitched roof or the length of a common rafter. …

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