Cm & Sons Roofing | General Contractors & Roofing in Cornelius, OR 97116

When we construct a new ADU, we design and install the roof system from scratch, which allows us to address common Cornelius issues proactively. We use high-quality, waterproof underlayment, proper flashing details around protrusions, and ensure optimal slope for water runoff. This foundational approach, tailored to our local rain patterns, creates a leak-resistant barrier from day one, unlike retrofitting an older structure.

Absolutely. While modular and manufactured homes arrive partially assembled, their on-site completion and placement are critical. We ensure the home is perfectly leveled and then install a custom, heavy-duty gutter system with oversized downspouts and extended leaders. This is specifically calculated for our area's rainfall intensity, directing water well away from the foundation to prevent the overflow and pooling that leads to water damage.

For new home construction, we don't just add a roof; we engineer a complete water-shedding system. This includes selecting impact-resistant shingles rated for high wind and rain, installing ice and water shield in vulnerable areas like valleys and eaves, and integrating seamless gutters with more downspouts than standard code. Our goal is to build a roof that handles heavy Pacific Northwest rains efficiently, minimizing the risk of leaks and overflow for decades.