4 Tips for Installing Corrugated Metal Roofing
Corrugated metal roofing is an excellent choice of roofing for your home. It consists of metal panels produced in a wavy pattern. This allows more efficient run-off of water from the roof. It reduces collection of water which helps to reduce damage by water to your home. Tin, iron, steel, copper and aluminum are some of the metals that are commonly used to produce corrugated roofing. You can paint the metal panels a color of your preference. This makes corrugated roofing both an attractive and practical choice for homeowners. Below are 4 tips to help you install a corrugated metal roof.
1. Roof Preparation
The panels are installed directly onto the roof’s plywood sheathing. It is important that you cover the sheathing with standard roofing felt paper before placement of the panels. This helps to weatherproof the roof. Extend the roofing felt paper by 2 to 3 inches all round the roof perimeter. Use galvanized staples to secure the felt paper onto the sheathing.
2. Placement of Panels
It helps if you draw chalk lines across the roof where the panels will be installed. This serves as a guide to ensure that your placement of panels is straight. Begin installation of panels at the bottom of the roof along the eaves. Install the first row of metal panels so that they overhang the roof by 2 to 4 inches. This diverts water run-off away from the roof boards. Steadily work your way up towards the roof ridge. As you place the upper panel over the panel below, overlap by 1 inch. You must also overlap each adjacent panel by the first whole ridge. If you encounter panels with half ridges at the edge, skip the half ridge and overlap the next whole ridge. This helps to give you a watertight roof.
Be sure to use nails of the same material as your metal panels. When metals with different properties are placed in close contact, it triggers adverse reactions. This ruins the appearance of your roof and creates more maintenance work for you. It is best to use 3 inch galvanized nails with washers. This helps to prevent collection of water on your roof. Install the nails along the hump of each layer of metal panels. Each panel will require 20 to 30 nails for a secure attachment.
4. Ridge Caps
These are vital features that help to complete your roofing project. They prevent the entry of weather elements, debris and small animals into your house. It is easy to establish how many ridge caps you’ll require. Measure the perimeter of your roof. Find the length of the roof ridge. Add the 2 measurements and divide the resultant figure by 6 feet. This gives you the number of ridge caps you need to purchase. Install the ridge caps after you’ve covered the entire roof with metal panels. Attach the ridge caps along the eaves, sides of the roof and along the ridge.