To screw down metal roofing, you’ll need to know how to install screws correctly. The screws should be positioned at the top of the rib, where they will be resting on a solid wood surface beneath the metal panel. While the top of the rib has a higher chance of pulling out in high winds, it can still be secured. Use a chalk line to make sure the screw is placed in a straight line. Dark colors can leave a hard-to-remove line on the metal roofing.
While screwing down metal roofing, use screws with rubber washers. The rubber washer should be smaller than the metal cap, so it spreads to the edge of the cap. Do not drive the screws too far, as this can cause the swarf to rust overnight. Once it has rusted, you can clean it off with a rag or soft brush. Then, follow the procedure above to screw the metal roof down.
To begin screwing down the panels, first mark the ridge cap. Measure the distance between each panel’s ridge cap and the eave. If the distance is not exactly one inch, then measure the distance between the snap line and the top edge of the closure strip. Once you’ve matched the lengths, proceed to screw down the metal roofing panels. If you’re unsure of where to place the screws, you can also rent them at The Home Depot.
Next, determine the type of screws. For example, if you’re installing corrugated metal roofing, you’ll need screws of different sizes and types. The type of screws you choose should be based on whether the panels are overlapped or not. Also, take into account whether the screws are too large or too small, as these will affect the final strength of the roof. You can download a free pdf of screw placement instructions by clicking on the link below.
The screw-down style of metal roofing is the simplest and least expensive option. Installation is quick and simple, so you won’t need to hire a professional roofer. However, the costs of installing screw-down metal roofing are slightly higher than those of a standing seam metal roof. Because screw-down roofs will have to be maintained and repaired every few years, you’ll have to invest more time in maintenance and repairs, but the overall cost of ownership will be well worth the price.
You can also install screws with self-drilling features. This type of screw is easier to sink if it’s pre-drilled. Pre-drilling can also help prevent the screws from being driven at an angle. This is particularly helpful for screws that are two inches and longer, because they have a higher chance of being installed at an angle. In addition, you can make use of a chalk line to keep the line straight and spaced evenly.
Another common issue with screw-down metal roofs is that the fasteners are exposed to the elements. This can cause problems in the future if the screws break or the metal expands and contracts. As a result, these screws will break off and require frequent maintenance. In addition, this type of metal roof has exposed fasteners that will need to be replaced. This can be expensive if you’re not comfortable with the constant maintenance that these types of roofs require.