Roof vent flashing disaster? here’s the easy fix you’ve been waiting for

If you’re noticing leaks or drafts around your roof vents, it’s likely that the flashing needs to be replaced. Replacing roof vent flashing is a relatively simple task that can be completed in a few hours with the right tools and materials. In this comprehensive guide, we’ll walk you through the step-by-step process of how to replace roof vent flashing, ensuring your roof stays protected from the elements.

Materials You’ll Need

• New roof vent flashing kit
• Roofing nails
• Hammer or roofing nailer
• Utility knife
• Caulk gun
• Roofing cement
• Safety glasses
• Gloves

Safety Precautions

Before starting any work on your roof, it’s crucial to take necessary safety precautions. Wear safety glasses and gloves to protect yourself from debris and sharp edges. Ensure the roof is dry and not slippery before going up.

Step 1: Remove the Old Flashing

Using a utility knife, carefully cut around the perimeter of the old flashing. Be cautious not to damage the roof membrane. Gently pry the old flashing loose and remove it from the roof.

Step 2: Clean the Surface

Clean the area where the new flashing will be installed using a damp cloth. Remove any dirt, debris, or old sealant. Allow the surface to dry completely.

Step 3: Install the Base Flashing

The base flashing usually comes in two pieces: a lower piece that fits around the vent pipe and an upper piece that overlaps the lower piece. Start by installing the lower piece, wrapping it around the vent pipe and securing it with roofing nails. Then, install the upper piece, overlapping the lower piece and nailing it in place.

Step 4: Install the Side Flashing

The side flashing pieces are designed to cover the sides of the vent and connect to the base flashing. Place the side flashing pieces on either side of the vent and nail them in place. Ensure they overlap the base flashing by about 2 inches.

Step 5: Install the Top Flashing

The top flashing piece covers the top of the vent and overlaps the side flashing. Position the top flashing over the vent and nail it in place. Make sure it overlaps the side flashing by at least 2 inches.

Step 6: Seal the Flashing

Apply a generous bead of roofing cement around the edges of the flashing, where it meets the roof membrane. Smooth out the cement using a putty knife or your finger. This will help prevent leaks and ensure a watertight seal.

Step 7: Install the Vent Cap

Once the flashing is installed and sealed, you can install the vent cap. Position the vent cap over the vent pipe and secure it with screws or bolts.

Troubleshooting Tips

• If you encounter any leaks, check if the flashing is properly installed and sealed. Apply additional roofing cement or caulk as needed.
• If the flashing is loose, tighten the roofing nails or replace them with new ones.
• If the vent cap is not secure, tighten the screws or bolts.

Answers to Your Most Common Questions

1. How often should I replace roof vent flashing?

Typically, roof vent flashing should be replaced every 10-15 years or as needed if it shows signs of damage.

2. Can I replace roof vent flashing myself?

Yes, replacing roof vent flashing is a DIY project that can be completed with the right tools and materials. However, if you’re not comfortable working on your roof, it’s best to hire a professional.

3. What are the signs of damaged roof vent flashing?

Signs of damaged roof vent flashing include leaks, drafts, rust, or missing or loose flashing.

4. What type of flashing should I use for roof vents?

The most common type of flashing used for roof vents is metal flashing, such as aluminum or galvanized steel.

5. How much does it cost to replace roof vent flashing?

The cost of replacing roof vent flashing varies depending on the size and type of vent, as well as the materials used. On average, the cost ranges from $50 to $150 per vent.