Roof flashing is a critical component in the weatherproofing of your home. It is especially important to protect the corners and edges of a structure where the building is at its greatest risk to moisture penetration and maintenance can be costly. Flashing materials must be durable, non-corrosive (weather resistant), compatible with common construction sealants and caulks (used at shelf angles and movement joints), malleable, (to accommodate movement and expansion/compression of neighboring materials), and low-maintenance. For durability and longevity, copper and stainless steel are the top of the line! Both are designed to last 50 to 100 years or more. They are more puncture- and tear-resistant than other flashing materials so they can withstand the demands of installation. Additionally, they are UV resistant and can be installed at any temperature unlike some flashings that become brittle or inflexible below 25F or above 100F. If you have any further questions please contact us or check out our Flashing blog.