Gutter flashing might seem to be a little detail that’s easy to overlook, but it’s actually one of the most important parts of your home. It moves water away from the house and roof, protecting it against rot and structural damage. This small piece of metal might be hidden away from view, but it’s quietly and efficiently keeping your castle safe. If you have a flat roof, it’s especially important to ensure proper gutter flashing, so consult a flat roof Calgary contractor to make sure it’s installed correctly.

What is gutter flashing, exactly? Gutter flashing is a waterproof seal placed where your gutter meets the wall and the roof line. Without it, water would seep behind the gutter, saturating building materials and creating an environment for mildew and rot. With proper installation and maintenance, however, it keeps water from penetrating your home and causing problems.

If you see water stains on the inside or outside of your walls, that’s a clear indication that your gutters aren’t properly doing their job. In many cases, this is caused by old or missing flashing. If you’re planning on replacing your gutters or just want to make sure they are doing their job correctly, it’s worth taking a closer look at your flashing.

Flashing is a long strip of aluminum or plastic that fits between your gutter and the roofline. There are two types of flashing: step and apron. Step flashing is the “L”-shaped pieces that are used at walls and around penetrations like chimneys, vents, and gutter systems. Apron flashing, on the other hand, is used at the base of these structures. It’s shaped to fit snugly under the starter shingles and into the trough of the gutter, effectively sealing off water from going down the wall or into the gutter.

How to install gutter flashing

To install flashing, start by ensuring you have stable footing on the ladder and that the roof is free of debris. Next, carefully pry up the shingles along the eave of the roof so you can access the area beneath. Slide the flashing into place, tucking it under the shingles and hanging over the edge of the gutter a bit. Secure it with roofing nails every 8-10 inches. Make sure to overlap each section by about 2 inches to ensure it stays watertight.

Once all the flashing is in place, apply a layer of caulk around the edges to prevent leaks and further damage. You can purchase caulk at any home improvement store or hardware outlet, but it’s important to choose a high-quality product that will hold up to harsh weather conditions. Make sure to purchase enough material to cover the entire length of your gutters, including the end that will be installed at the fascia. If you’re not comfortable performing the task of installing flashing yourself, contact a professional for help. They’ll be able to inspect your existing flashing and give you a fair estimate for any needed repairs or replacement. They can also help you find the best gutter system for your home.