Roof Tie-In for Additions

What this involves.

A roof tie-in is the connection between a new addition's roof and the existing roof, and it is one of the most important details in any addition because it controls how the home sheds water. Done poorly, it leaks and looks tacked on. We frame the new roof to meet the existing slope, set proper valleys and flashing, and integrate the underlayment and shingles so water moves off the roof instead of into the seam. We match the pitch, overhangs, and shingle style so the addition reads as part of the original roofline. Whether the tie-in is part of a room addition or a larger expansion, we build it to keep the whole house dry.

• Evaluating the existing roof slope and structure for the tie-in
• Framing the new roof to meet the existing pitch and lines
• Setting valleys, flashing, and step flashing at the connection
• Integrating underlayment and shingles for proper water shedding
• Matching pitch, overhangs, and shingle style to the existing roof
• Sealing and detailing the seam to prevent leaks
• A walkthrough to confirm the tie-in sheds water and looks seamless