Installing a drip edge on metal roofing is an essential step in ensuring the longevity and effectiveness of your roof. A drip edge is a metal flashing installed at the edges of the roof to direct water away from the fascia and into the gutter. This installation not only protects the roof structure but also enhances its overall functionality. Below is a guide on how to install a drip edge on metal roofing and an overview of its benefits. If you’re not confident with DIY, then contact a company such as Ottawa Metal Roofs for expert metal roof installation and metal roofs.
Installation Process
1. Gather Necessary Materials and Tools
Before starting, ensure you have all the required materials and tools. This includes:
- Drip edge flashing (choose a material compatible with your metal roofing)
- Roofing nails or screws (preferably galvanized or rust-resistant)
- Hammer or screw gun
- Measuring tape
- Tin snips for cutting the drip edge
- Ladder and safety gear (safety harness, gloves, etc.)
2. Measure and Cut the Drip Edge
Measure the perimeter of your roof where the drip edge will be installed. This includes the sides and bottom edges of the roof. Cut the drip edge to the required lengths using tin snips. If the roof edge is longer than the drip edge pieces, remember to leave an overlap of about 2 inches for each piece.
3. Start with the Bottom Edge of the Roof
Begin the installation at the bottom edge (eaves) of your roof. Position the drip edge so that it overhangs slightly off the roof edge. The standard overhang is usually ½ inch to ¾ inch. This slight protrusion ensures that water drips directly into the gutters, not onto the fascia.
4. Secure the Drip Edge in Place
Using roofing nails or screws, secure the drip edge to the roofing deck. Place the fasteners at intervals of 12 to 16 inches along the drip edge. Ensure that the drip edge lies flat against the roof decking for a uniform and neat installation.
5. Overlap the Drip Edge Sections
Where two pieces of drip edge meet, they should overlap by about 2 inches. This overlap is crucial to prevent water leakage between sections. The overlapping also maintains a continuous path for water flow.
6. Install Drip Edge on the Sides
After the bottom edges, move to the sides of the roof. Here, the side drip edge should overlap the bottom piece. This method of layering ensures that water flows seamlessly from the roof to the gutters without seeping into the roof layers.
7. Corner Installation Techniques
At the corners of the roof, special attention is needed to ensure proper overlap and water flow. The drip edges should be cut at a 45-degree angle at the corners to fit snugly and provide a seamless path for water. The lower piece should be installed first, followed by the side pieces, overlapping the lower piece.
8. Attaching the Drip Edge Under Roofing Material
In some cases, especially when retrofitting, the drip edge needs to go under the existing roofing material. Gently lift the shingles or metal sheets and slide the drip edge underneath. This is particularly important to ensure that water runs off the roof and into the gutters, not under the roofing material.
9. Secure the Drip Edge Along the Gable Ends
On the gable ends of the roof, extend the drip edge up to the peak. Ensure that it’s securely fastened and overlaps any previous drip edge sections. The gable ends can be more susceptible to wind lift, so securing them properly is crucial.
10. Seal and Finish
Once all sections of the drip edge are installed, it’s important to seal the edges, especially at the overlaps and corners. Use a high-quality, weatherproof sealant to prevent water infiltration.
After installation, conduct a thorough inspection to ensure that every part of the drip edge is securely fastened and properly overlapped. Check for any gaps or loose sections that could allow water penetration or be susceptible to wind damage.
Benefits of Installing A Drip Edge
- Water Damage Prevention: The primary benefit of a drip edge is its ability to prevent water damage. By directing water away from the fascia and into the gutter, it reduces the risk of water infiltrating the roof deck and causing rot or mold.
- Improved Roof Longevity: By preventing water damage, a drip edge extends the life of your roof. It acts as an extra layer of protection against harsh weather conditions, reducing wear and tear on your roofing materials. If you pair these drip edges with routine metal roof inspections, you will not only ensure that you get the expected life out of your roof, but you will also likely avoid unwanted and costly home repairs brought on by unnoticed roof damages.
- Pest Deterrence: A properly installed drip edge can also help in deterring pests and small animals from entering the space between your roof deck and fascia. This is particularly important in areas prone to rodent or insect infestations.
- Enhanced Aesthetics: Drip edges give a finished look to your roof, enhancing its overall aesthetic appeal. They can be painted to match or complement your roofing, adding to the curb appeal of your home.
- Eave Protection: Drip edges protect the eaves from wind-driven rain, which can be forced under the roofing material. In areas with heavy wind and rain, this added protection is invaluable.
- Support for Shingles and Roofing Material: Drip edges provide support to the roofing material at the edges, preventing sagging and ensuring a smooth, straight roof line.
Conclusion
Installing a drip edge on metal roofing is a relatively straightforward process that offers a multitude of benefits. From protecting against water damage to improving the overall look of the roof, a drip edge is an essential component in any roofing system. By following the steps outlined above, you can ensure your roof is well-protected, functional, and visually appealing. Remember, while DIY installation is possible, consulting with or hiring a professional roofer is always advisable for optimal results and safety, especially if you’re unfamiliar with roofing work.
