How Do You Flash A Roof Against Brick Wall

Flashing a Roof Against a Brick Wall: A Comprehensive Guide

Roof flashing plays a crucial role in preventing water damage to a building's interior by diverting rainwater away from vulnerable areas. When a roof meets a brick wall, proper flashing techniques are essential to ensure a watertight seal.

In this article, we will delve into the essential aspects of flashing a roof against a brick wall, providing you with a comprehensive understanding of the materials, methods, and techniques involved in this critical task.

Materials Required

Roofing felt
Base flashing (L-shaped or W-shaped)
Counter flashing (Z-shaped)
Step flashing
Butyl tape
Self-adhesive membrane
Caulk
Nails or screws
Hammer or nail gun

Methods and Techniques

1. Install Roofing Felt

Lay roofing felt along the joint between the roof and the brick wall, extending it at least 6 inches onto the roof and up the wall.

2. Install Base Flashing

Position the base flashing over the roofing felt, ensuring it extends over the top of the brick wall and at least 4 inches onto the roof.

3. Install Counter Flashing

Bend the counter flashing into an "L" shape and slip it behind the base flashing. Secure it to the brick wall using nails or screws spaced 6 inches apart.

4. Install Step Flashing

Cut step flashing into individual pieces that are slightly wider than the courses of brick. Insert each piece under the roofing shingles and over the counter flashing, overlapping each piece by at least 2 inches.

5. Seal Joints

Apply butyl tape to the joints between the base flashing, counter flashing, and step flashing. Additionally, caulk around the edges of the flashing to prevent water penetration.

6. Install Self-Adhesive Membrane

Apply a self-adhesive membrane over the base flashing and extend it onto the roof and up the wall. This provides an additional layer of waterproofing protection.

7. Cover Flashing with Shingles

Lay roofing shingles over the flashing, ensuring they overlap the flashing and extend at least 6 inches onto the brick wall.

Additional Tips

Use high-quality materials to ensure durability and longevity.
Wear appropriate safety gear, including gloves and eye protection.
Inspect the flashing regularly and make repairs as needed.
Consider hiring a qualified roofing contractor for professional installation.

Conclusion

Flashing a roof against a brick wall requires careful attention to detail and proper installation techniques. By following the steps outlined in this guide, you can effectively prevent water damage and protect the integrity of your building.

Remember, regular inspection and maintenance are essential to ensure the long-term performance of your roof flashing.