Open valley slate roof

An open valley is one of the most common valleys used in slate roofing in which the chosen flashing material is exposed.

After the underlayment is installed across the valley, the flashing is installed providing an additional layer of lining.

Open valleys are advantageous in locations where foliage accumulates and they also shed ice and water more quickly.

The slate is installed a minimum of 3 to 4 inches each side of the valley centerline. Installed with a taper which increases from top to bottom.

When installing a valley, make sure its straight!

By Sheena Owen Sep 20th, 2021

Sheena Owen

Sheena Owen began working for North Country Slate on October 12, 1999. Started as the Sales Coordinator and transitioned to a Sales Representative. Daily duties include providing customer service, new business development, inside sales, handling all cross-border customs issues/documentation, arranging shipments, health and safety representation and social media marketing. Sheena graduated from the University of Guelph in 1992 with a BA in English and Drama and in 1995 graduated with a Diploma in Radio and Television Broadcasting from Centennial College. Sheena’s first job was the Executive Producer’s Assistant for TV shows including Robocop, F/X The Series and Nikita. She went on to becoming an Assistant Manager at Eddie Bauer. In her spare time, Sheena enjoys traveling, gardening and hikes with family and friends.

Sheena Owen

Request Information