Now that you are aware of the factors that need serious consideration before you step into a full-fledged metal roofing installation process, you’re certainly ready to learn more about how this process works.
Here is a 9-step guide that you can follow for successful metal roofing installation:
a. Surface prep
Remove the old roof to expose the decking underneath it and carefully look at the decking for any kind of weak spots, damage, or rot, and make the required repairs. Installing a waterproof underlayment is essential to safeguard your home against potential water damage.
b. Attaching the dripping edge
A drip edge is a metal strip that directs water away from your building and protects roof edges against damage. So, the next step is to install a drip edge just along the perimeter of your roof for a clean finish and secure it with screws or nails.
c. Planning for the panels
Next, you have to plan out how you’re going to lay your panels. Start at the roof’s edge, which is opposite to the prevailing winds, and ensure that the overlaps are directed away from the wind. Next, mark the roof to easily maintain the alignment of the panels you’ll be installing.
d. Cutting panels to the right size:
The panels need to be cut to the required size before installation. For clean and precise cutting, you can use either a circular saw with a metal cutting blade or metal snips. Remember to double-check your measurements before actually cutting.
e. Time to install the first panel:
Now, you need to install your first panel by aligning it with the drip edge, and then use it as a reference to install the rest of the panels in an overlapping position. Don’t forget to position it in a way that allows for the pre-set overhang.
f. Sealing with fasteners:
If you are concerned about preventing damage to the panels, don’t worry. The trick here is to create a watertight seal by using screws with rubber washers and placing them evenly along the ribs.
g. Overlapping the panels:
Refer to the manufacturer’s instructions to verify your panel overlapping technique. The durability of your roof and its protection against leaks depend on properly overlapping it. For easier installation, a great tip is to use alignment marks or pre-drilled holes.
h. A finished appearance with the ridge cap:
The ridge cap needs to go along the roof’s peak and provides a finished appearance as well as seals weak parts against water infiltration. Make sure your seams are tight and secure them with screws.
i. Flashing and the final inspection:
Lastly, add flashing around the skylights, vents, and chimneys for a waterproof barrier against leaks, and do a final inspection to check if:
- Panel edges are aligned.
- Overlaps are secured.
- Fasteners are tight.
