Copper roof flashing – Roof drains are usually used in flat-roofed building in America. Over the years there have been several manufacturers that make commercial waterways of either cast iron or plastic. Both ductile iron and plastic water lines are a pain to install. Roofing membrane must be cut and install the system clamps that clamp onto the roof flows from under the roof line. Ductile iron castings are very expensive and the drains of plastic tend to fail over time. But there is an alternative.
Copper roof flashing has made the copper water lines for over 30 years. Copper drains do not rust, it is very easy to install and cost effective. Copper roof drains come in big flashing is made of 20 ounces of natural copper. Why is this important? This is what makes the sewer easy to install, just below the nail flashing and waterproofing putting you on it and you are done.
One of the biggest problems with cast iron and copper roof flashing is that as the building settles wind channels springing from the roof causing silting around the drain and usually callback future for the contractor and roofer. Copper Thunderbird channel eliminates this problem. The nature of copper is that it is a soft metal. So as the building settles flashing copper drain completely settles with the roof. This means no more puddling, and no more call-backs.