In most cases, the corrugated metal roofing will create a rustic design that is perfect for a garden or patio area. By following the 10 simple instructions below, you will be able to install a corrugated metal roof on your garage or shed.
Without getting up on the roof itself, you can get the measurements simply by measuring the length and width of the roof and then multiply these together.
If the roof has a peak, then you will need to get the measurements of both sides of the roof. You will need slightly more than the measured amount of material due to the need for overlap on the roof. The suggested overlap for a roof is 4 inches. Depending on the area of the roof, you can use different sized panels.
You can either buy large metal panels of up to 32 feet in length and then cut them to the right size, or you can purchase pre-cut metal panels at a home improvement store that may be only 10 or 12 feet in length.
If you need to cut the sheets, you can use an angle grinder, a saw or tin snips. The purpose of the roofing felt is to create a layer of insulation. If you are installing a metal roof on a structure like a patio cover, you may not need this insulation layer. Instead, you can just secure the metal roof directly to the wooden beams.
Cut the roofing felt to fit with a utility knife. The roofing felt will lay horizontally along the plywood deck of the roof. Attach the roofing felt with roofing staples. Make sure you overlap each layer by at least 4 inches. When laying the metal, you will need to start from the bottom corner of the roof and work across.
After you have finished each row of panels, you will then need to start a new row that overlaps the old row by at least 4 inches. You can think of this process as moving across the bottom of the roof and then progressively getting higher and higher until you reach the peak. When you start with the first metal panel, position it so that it overhangs the edge by at least 4 inches. Then, add screws approximately every 8 inches along the outside edge and bottom of the panel.
This will help to weatherproof the roof. Paint or prime cut edges to prevent rust. Circular saw: [2] X Research source Slower than angle grinder, but follow same instructions. Use a metal blade and expect it to wear quickly. Nibbler: Effective if rated for the right metal and gauge. Tin snips: [3] X Research source Slow but safe. Wear work gloves and find the longest pair you can. To install corrugated roofing, start by cutting your panels to length with an angle grinder.
Next, pre-drill holes on the end and side ridges of the panels, spacing the holes 6 to 8 inches apart. Beginning at the outside edge of your roof, place each panel directly onto the purlins that are attached to the roof trusses. Screw down the panels using the pre-drilled holes, then continue across the roof until it is completely covered. To learn more from our Contractor co-author, like how to choose between corrugated PVC or metal roofing, keep reading the article! Did this summary help you?
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Cut the panels to the desired length. Most panels come up to 32 feet 9. Allow for a minimum of 18 inches 46 cm if you need to lap to complete the run. Pre-drill holes on the ridges. Some panels have pre-drilled holes. If yours do not, then you will need to drill holes in them. Install the panels. Place them directly onto purlins that are attached to the roof trusses, beginning on the outside edge. These will stop the entry of rain, wind, and pests.
Screw down the panels. Pre-drill the holes, and use 10 by 2 in Adjust the lap so that the last panel completes the coverage without making a cut lengthwise. Complete the opposite side. If your roof is 2-sided and not just a single slope , repeat the installation on the other side of the roof, and install a corrugated ridge cap as you proceed across with the panels. Method 2. Choose PVC roofing to let light in. They allow daylight to enter through them. If cost is a factor, PVC is a cheaper alternative to sheet metal.
PVC will block out the heat from the sun much more effectively than sheet metal, which will act like a radiator. Some PVC is translucent, but filters ultraviolet rays, and comes in a variety of colors.
The disadvantages of PVC are that it's not as durable as sheet metal, is noisy in the rain, and can easily break off during high winds.
Pick metal roofing for greater durability. One of the strongest features of corrugated metal is its durability. Modern galvanized steel or aluminum is resistant to rust, and can easily last up to years. Metal roofing resists rot, is not susceptible to insect damage, and is non-combustible a boon in fire-prone areas. One downside is that the metal sheets have a susceptibility to denting, both in installation and during hailstorms. Metal roofing can also be significantly more expensive than PVC.
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Lay the panels on the ground the way you want them to be on the roof. This helps in setting up the lap of the panels.
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