Metal roofs are perhaps one of the only products that will actually outlive its warranty.
Metal roofs have been on homes for hundreds of years in United States.
Europeans have had them for centuries.
A metal roof, especially with the technology today using zinc and aluminum coatings and innovative painting systems, can last a lifetime.
There are actually a few manufacturers that offer lifetime warranties.
Although from the ground it looks fairly easy, metal roof installation takes both special tools, a working
knowledge of those tools, and roofing experience.
Most homeowners do not possess these skills and should consult with a licensed metal roofing contractor.
Our How To Install Metal Roof guide will explain the steps for both standing seam metal roofing and metal shingles.
The following steps are for assessment purposes only and should not be used for actual construction.
Be sure to follow all manufacturers instructions to the letter if installing metal roofing yourself.
You should also consult with your local building codes department prior to installation to ensure your project meets local
Standing Seam Metal Roofing Installation
You should realize a standing seam metal roof is more difficult to install than metal shingles although it is the most popular.
Include at least 3 - 6 inches of overlap and the same for overhangs along the roof perimeter when ordering your metal panels.
A metal roofing square is 100 square feet - you'll be ordering by the square.
How to Install Metal Roof - Safety Always First
Roofing is dangerous work.
I've fallen off a ladder; it wasn't the fall that hurt but rather that sudden stop at the end.
Make sure all ladders are in good operating condition
Make sure there are least two or more people on site when working
Use a fall arrest system that is properly secured
Mark off areas where tools may drop
Keep children away - period.
How To Install Metal Roof - Roof Preparation
Your first issue is whether or not to remove the existing shingles.
It is recommend that you do remove the shingles for standing seam metal roofs.
If you don't, you may find that asphalt shingles can cause dents and lines over time when using standing seam metal panels.
Removing the existing shingles will also expose deck roof damage and you'll have the opportunity for repairs.
Another reason to remove existing shingles is for the installation of a water barrier.
Condensation occurs due to temperature fluctuations. Your metal porch roof will last over 50 years or more
so having the best roof underlayment is a wise investment.
You will want to cover the entire roof with the underlayment.
If you live in snow and ice country you need to take it one step further by laying down a row width of ice and water barrier along the
eaves and valleys.
I've used ice and water barrier and I'm sold on its ability to prevent water damage.
How To Install Metal Roof - Standing Seam Specs
Standing seam metal roofs are made from sheet metal roof panels joined and attached to the roof decking with hidden fasteners.
Panels are typically 12, 16, or 19 inches wide and are made from copper, aluminum, or galvanized steel.
Ribs are formed when the panels are joined and can be anywhere from 1 inch to 1 1/2 inches in height.
To accommodate standing seam panels, your roof must have a 2:12 rise and run (sometimes called pitch).
However, you may find some manufacturers that require more pitch so be sure your roof meets or exceeds their product specifications.
Now its time to install the first sheet metal panel in our "how to install metal roof" process.
Normally you will install the first panel over the gable edge trim.
This is where it is extremely important to follow manufacturer's installation instructions.