Sheet metal roofing is quite popular amongst homeowners. It consists of flat metal panels that are laid in an overlapping manner. This creates an attractive arrangement which enhances the appearance of your home. The 2 basic types of metal roofing are the R-panel and V-crimp. The R-panel has high ridges and requires 5/16 lap screws to install. The V-crimp is simpler to install, as it does not require lap screws. When properly installed, a metal roof can last a lifetime. A few tips can help you make your metal roof installation a success.
It is vital that you take measurements of your roof to help you get the right quantity of material. Plan to purchase slightly more sheets than required for the roof area because of the 3 to 6 inch overlap on each panel. Take the length and height on both sides of the roof, as this will also guide you as to how much overhang and edging is required. Overhang usually ranges from 2 to 4 inches. If you have shingles on your roof, it is best to remove these before you install the metal roofing. Use a pitchfork or roofing shovel to remove the shingles. You can then lay down 30 pound tar paper or roofing felt as the base of your new metal roof.
This is placed all along the perimeter of the roof. It is best to install this first. Secure the edging in place with the help of hammers and 1 ¼ inch roofing nails.
3. Overlap Technique
The best way to install sheet metal roofing is to place sheets in a vertical manner. Begin at one end of the roof and run one sheet at a time. Each subsequent sheet should overlap the previous. Work in this way until you reach the bottom of the roof. You must then begin the installation from the top again and work in a vertical manner. The R-panel sheeting will have a lip at the overlap while the V-crimp will have a crimp.
4. Screw Placement
Proper placement of screws goes a long way to ensure a successful job. Use ¼ inch wood screws for best results. Install the screws every 2 feet on the center and edges of the sheets. However, the first column of sheets installed will be an exception. These should only have the screws placed along the center and inner edges. The outer edges will be covered by trim. Be sure to place screws along the bottom edge as well at 2 feet intervals except for the R-panels. You will install foam closure at the bottom edges of the R-panels to keep out birds and animals.
This is placed along the edges on both sides of the roof. You also need to cover the peak of the roof with trim. It is best to notch the trim in the center. This will allow you to bend it over the peak. Use ¼ inch wood screws placed 2 feet apart to secure the trim in place.
6. Extra Help
The metal sheets can be long and awkward to handle if you’re alone. It is best to have somebody help you as you install. This will enable you to work more comfortably and efficiently.