Below are the two most popular roof types, we’ll guide you through our roof sheet calculator, showing a guide on how many sheets to order, what flashings and accessories you may need, including the screws, and will give you the total cost of your potential project. This free roofing calculator estimates the area of a roof and the amount of materials required to replace or build said roof. You may need to cut panels to fit angles, using a circular saw with a metal-saw blade. How To Cut Metal Siding After you figure siding measurements you will still need to cut to length the gable rake, entry door, and window openings. Continue adding panels until the roof is covered. A standard minimum for a sheet of metal placed on the roof so that it overhangs the edge is at least ¾ of an inch to 1 inch (2-2.5cm). Many newer metal roofs are built with exposed fasteners, which can leak if the metal roof installation guide is not carefully followed. The Metal Panel Coverage area refers to the width of the panels you plan to buy (typically 36" coverage). Roofing sheets are typically supported by timber or steel members known as ‘purlins’ It’s recommended that purlin size and spacing’s follow the specifications of the roof sheets you are installing. How many sheets of metal roofing do you need – Metal roof information. It’s durable, cheap, and easy to install. Preventing leaks lengthens a roof's life. Metal roofing comes in 24 and 36-inch wide measurements. On the other hand, a maximum is around 8-11 inches (20-30cm); if it's longer than this, external supports are usually required. A metal roof is a long-lasting roof, but checking the screws for damages is an important part of metal roof maintenance. The 1½ inch variety is the best all-purpose size. Now that you have your sheet quantity, it’s time to calculate how many fixings you’ll need. 1square of roofing covers 100 square feet of roof a bundle is 1/3 of a square. PRODUCT GUIDE; How to Calculate and Place Screws; Allsteel carries screws in 2 different lengths: 1½ inch and 2 inch. While metal roofs have long been a mainstay in commercial construction, more and more residential architects are turning to them. When it comes time to buy material to install or repair your metal roof, you’ll need to do some calculating. Tool Rounds Up To Nearest Inch. If you asked two installers whether they pre-drill metal roofing sheets prior to installation, you would likely get two completely different answers. The screws that are used to attach the metal roofing … Lay the starter row of metal shingles at the drip edge and affix to the roof with metal roofing nails. Explore a number of housing related calculators, as well as hundreds of other calculators covering topics such as finance, math, health, fitness, and more. Metal roofing has been growing in popularity in recent years, and for good reason. To determine how much roof material you need for your project, you should know how it is sold. Do I Need To Pre-Drill Screw Holes For My Metal Roofing Panels? Metal roofing is also available in the form of shingles. Metal Roofing Measurements. Get the square footage of roof and divide it by 100 and it will give the number of squares you need and for every decimal number over 3 buy a bundle to achieve the amount of material.